KeyDB [CRASH] server started to throw "read error on connection to ..."

Crash report

phpredis started to throw "read error on connection to 127.0.0.1:11080" at a random time with minimal load. This happened already twice in 2 different servers in different times. When I realized it's not working, i couldnt connect via keydb-cli as well. Until i restarted the server, logs were also not coming for quite some. Despite that it wasnt working, keydb process was still running and systemctl status keydb also showed "running".

Paste the complete crash log between the quotes below. Please include a few lines from the log preceding the crash report to provide some context.

### BEFORE RESTART
....
27373:27392:M 24 Jul 2022 15:50:06.665 * Background saving terminated with success
27373:27392:M 24 Jul 2022 15:55:07.028 * 1 changes in 300 seconds. Saving...
27373:27392:M 24 Jul 2022 15:55:07.029 * Background saving started
27373:12175:M 24 Jul 2022 15:55:07.605 * DB saved on disk
27373:12175:M 24 Jul 2022 15:55:07.610 * RDB: 40 MB of memory used by copy-on-write
27373:27392:M 24 Jul 2022 15:55:07.634 * Background saving terminated with success
27373:27392:M 24 Jul 2022 16:00:08.081 * 1 changes in 300 seconds. Saving...
27373:27392:M 24 Jul 2022 16:00:08.081 * Background saving started
27373:16152:M 24 Jul 2022 16:00:08.636 * DB saved on disk
27373:16152:M 24 Jul 2022 16:00:08.640 * RDB: 41 MB of memory used by copy-on-write
27373:27392:M 24 Jul 2022 16:00:08.688 * Background saving terminated with success
27373:27392:M 24 Jul 2022 16:05:09.049 * 1 changes in 300 seconds. Saving...
27373:27392:M 24 Jul 2022 16:05:09.049 * Background saving started
27373:19768:M 24 Jul 2022 16:05:09.614 * DB saved on disk
27373:19768:M 24 Jul 2022 16:05:09.618 * RDB: 41 MB of memory used by copy-on-write
27373:27392:M 24 Jul 2022 16:05:09.657 * Background saving terminated with success

### AFTER RESTART (no logs since 16:05 until i restart)

27373:signal-handler (1658696015) Received SIGTERM scheduling shutdown...
27373:27392:M 24 Jul 2022 23:53:35.257 # User requested shutdown...
27373:27392:M 24 Jul 2022 23:53:35.257 * Saving the final RDB snapshot before exiting.
27373:27392:M 24 Jul 2022 23:53:35.782 * DB saved on disk
27373:27392:M 24 Jul 2022 23:53:35.782 * Removing the pid file.
27373:27393:M 24 Jul 2022 23:53:35.782 # Accepting client connection: accept: Bad file descriptor
27373:27392:M 24 Jul 2022 23:53:35.818 # KeyDB is now ready to exit, bye bye...
23552:23523:C 24 Jul 2022 23:53:36.163 # oO0OoO0OoO0Oo KeyDB is starting oO0OoO0OoO0Oo
23552:23523:C 24 Jul 2022 23:53:36.163 # KeyDB version=6.3.1, bits=64, commit=00000000, modified=0, pid=23552, just started
23552:23523:C 24 Jul 2022 23:53:36.163 # Configuration loaded
23552:23523:M 24 Jul 2022 23:53:36.165 * monotonic clock: POSIX clock_gettime
23552:23523:M 24 Jul 2022 23:53:36.166 * Running mode=standalone, port=11080.
23552:23523:M 24 Jul 2022 23:53:36.166 # Server initialized
23552:23523:M 24 Jul 2022 23:53:36.166 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
23552:23523:M 24 Jul 2022 23:53:36.167 * Loading RDB produced by version 6.3.1
23552:23523:M 24 Jul 2022 23:53:36.168 * RDB age 1 seconds
23552:23523:M 24 Jul 2022 23:53:36.168 * RDB memory usage when created 29.44 Mb
23552:23523:M 24 Jul 2022 23:53:36.387 # Done loading RDB, keys loaded: 0, keys expired: 0.
23552:23523:M 24 Jul 2022 23:53:36.387 * DB loaded from disk: 0.219 seconds

Aditional information

OS distribution and version

Ubuntu Server 18.04 and keydb 6.3.1 with more than enough ram and disk space.

Config:

bind 127.0.0.1
port 11080

protected-mode yes

timeout 15

daemonize yes
pidfile /var/run/keydb/keydb-server.pid

loglevel notice
logfile /var/log/keydb/keydb-server.log

set-proc-title yes
proc-title-template "{title} {listen-addr} {server-mode}"

dir /var/lib/keydb

maxclients 5000
server-threads 2

policies
maxmemory 1G
maxmemory-policy noeviction

save 300 1
save 60 100
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
rdb-del-sync-files no

appendonly no

Steps to reproduce (if any) Nothing I can tell. It started to happen random recently. It didn't ever happen for months before. It might be related to v6.3.1, but I don't remember when I upgraded to this version.

Jul 25 '22 07:07 ardabeyazoglu

I just encountered the exact same thing on another ubuntu server with identical config and versions. Logs are similar as well. Restarting keydb solved the issue.

Jul 29 '22 06:07 ardabeyazoglu

Same here. I'm using the eqalpha/keydb:alpine_x86_64_v6.3.1 docker image with the following command: keydb-server /etc/keydb/keydb.conf --requirepass smth --server-thread-affinity true --server-threads 4 --appendonly yes --maxmemory 4gb --timeout 300

Jul 31 '22 13:07 rainerborene

Also encountered the same issue in multiple new servers. This is becoming a serious issue and very hard to debug.

Aug 10 '22 16:08 ardabeyazoglu

I'm not seeing a crash here, KeyDB is recieving SIGTERM. Usually this happens from a health check failing if your using k8s. What are you using for your healthchecks? Are you seeing timeouts or high latency for other queries?

Aug 10 '22 19:08 JohnSully

@JohnSully i am not using kubernetes, just plain old ununtu 18.04 servers and keydb apt packages with systemd. There is enough resources as well. Also, i think there is a misunderstanding. I sent that SİGTERM to restart the server to fix the issue. Before the signal there was nothing being logged for a period and my app was getting bloated with read errors. I tried to explain this more detaily in my first comment. If you need more information, please tell me.

Edit: I dont see high latency but read timeouts for all queries when it crashes. The strange thing is systemd keydb status still looks ok, but keydb-cli also gives the same error.

Aug 10 '22 19:08 ardabeyazoglu

To some extend I think this could be related to OpenSSL 3 library as mentioned here and here as well.

Aug 10 '22 20:08 rainerborene

To some extend I think this could be related to OpenSSL 3 library as mentioned here and here as well.

But i dont use ssl/tls. Does it still apply ?

Aug 10 '22 20:08 ardabeyazoglu

When KeyDB crashes it creates a fairly long and detailed bug report in the log. Are you able to post this?

If its just a hang and not a crash that is also useful information and would direct the investigation elsewhere.

Aug 11 '22 18:08 JohnSully

@JohnSully I didn't have crash logs like that. All i had was what i posted. I think it is more appropriate to says it "hangs" rather than "crash". If it happens next time, I ll try to debug more.

Aug 11 '22 18:08 ardabeyazoglu

@JohnSully I encountered recently today the same issue. Until I restarted the service, I saw the followings:

The last log line was an hour ago "Background saving terminated with success". Logging stopped after this.
keydb-cli hang as well, but no connection error or anything similar
I connected with telnet command, but any command I run doesnt return any response and eventually connection is closed after some 8-10 seconds.

I also encountered similar issue in another server for a short time but this time it lasted maybe a minute or two, and it kept working normally after. And it was also under load, so maybe I can say keydb timeouts easily under load for some time (my read timeout is 2 secs). However, in other servers like above, it never works until i restart the service.

Aug 12 '22 06:08 ardabeyazoglu

I had a similar problem here; different machines (we've switched from one to another to see if this was a machine/other services problem), but all under Ubuntu 20.04. OpenSSL 3 doesn't apply here.

They all, after some time (days) start refusing connections for no reason (a simple keydb-cli -h 10.1.0.2 PING timeout) and there is nothing in the logs (only RDB info messages). Restarting (systemctl restart keydb) solves the issue, until it starts again.

After several "crashes", and as I was unable to somehow fix this, I've simply stopped/disabled KeyDB, and installed Redis 6.2.7; since that, with a very similar config file, no problems, crash or whatever, on the same machine where KeyDB stopped working. Note that KeyDB stopped working after some days, we're now running Redis for much longer.

Note that the service is simply listening on the LAN interface and localhost, no cluster or replication is enabled here. I really don't know how to help debug this...

KeyDB 6.3.1 is the version. Main usage is storing PHP sessions to serve some PHP servers (so there are a lot of commands/load like these):

1660757971.880235 [10 10.1.0.2:53616] "ECHO" "phpredis:62fd27d3d67c1:e4f75c83"
1660757971.880857 [10 10.1.0.2:53616] "SELECT" "10"
1660757971.900729 [0 10.1.0.2:53620] "ECHO" "phpredis:62fd27d3db7ec:97543394"
1660757971.901350 [0 10.1.0.2:53620] "SELECT" "0"
1660757971.901831 [0 10.1.0.2:53620] "EXISTS" "PHPREDIS_SESSION:yT69MSJUrKkq5hFOEKAmiuvBwlPUAWAvw9T61biVCzK0PboD"
1660757971.902282 [0 10.1.0.2:53620] "SELECT" "0"
1660757971.902692 [0 10.1.0.2:53620] "SET" "PHPREDIS_SESSION:yT69MSJUrKkq5hFOEKAmiuvBwlPUAWAvw9T61biVCzK0PboD_LOCK" "nbg1-php1|226323" "NX" "PX" "3600000"
1660757971.903063 [0 10.1.0.2:53620] "GET" "PHPREDIS_SESSION:yT69MSJUrKkq5hFOEKAmiuvBwlPUAWAvw9T61biVCzK0PboD"
1660757971.928442 [10 10.1.0.2:53634] "ECHO" "phpredis:62fd27d3e245b:1497a972"
1660757971.929086 [10 10.1.0.2:53634] "SELECT" "10"
1660757971.955158 [0 10.1.0.2:53620] "SELECT" "0"
1660757971.955888 [0 10.1.0.2:53620] "GET" "PHPREDIS_SESSION:yT69MSJUrKkq5hFOEKAmiuvBwlPUAWAvw9T61biVCzK0PboD_LOCK"
1660757971.956398 [0 10.1.0.2:53620] "SETEX" "PHPREDIS_SESSION:yT69MSJUrKkq5hFOEKAmiuvBwlPUAWAvw9T61biVCzK0PboD" "1440" "encrypted_session_data|s:388:\"d24d8661126657103956f368bd93e259143778a698fdc530489d17208ffb8febc558a3664e3555c555da78ea66eca671c8c24cd262b9324841ba7b2727a361397b11f76a62281d29e706e3d88f5b6081f1fc58bfbf3bcfc1c006048cae80d20774e91310e1b1202a5922186ad71c827f|4a2c154c4ca4edcfce450f8964501eab|7ebea3a069e32e0c1c7ed53a45e321bc5bad0466257f614d0ee8e90a99705f39fdc2db7de21a985b18fbf22a02b48edafc11d87571148dfc6beac0fc2c041cad|3\";"
1660757971.956982 [0 10.1.0.2:53620] "SELECT" "0"
1660757971.957422 [0 10.1.0.2:53620] "EVALSHA" "b70c2384248f88e6b75b9f89241a180f856ad852" "1" "PHPREDIS_SESSION:yT69MSJUrKkq5hFOEKAmiuvBwlPUAWAvw9T61biVCzK0PboD_LOCK" "nbg1-php1|226323"
1660757971.957463 [0 lua] "get" "PHPREDIS_SESSION:yT69MSJUrKkq5hFOEKAmiuvBwlPUAWAvw9T61biVCzK0PboD_LOCK"
1660757971.957479 [0 lua] "del" "PHPREDIS_SESSION:yT69MSJUrKkq5hFOEKAmiuvBwlPUAWAvw9T61biVCzK0PboD_LOCK"

Aug 17 '22 17:08 solracsf

We have a cluster here at Snap that has begun to repro this which should help a lot with debugging. I really appreciate everyone's help providing data and I hope to have a fix soon.

On Wed, Aug 17, 2022 at 1:20 PM solracsf @.***> wrote:

I had a similar problem here; different machines, but all under Ubuntu 20.04. OpenSSL 3 doesn't apply here. They all, after some time (days) start refusing connection (a simple keydb-cli -h 10.1.0.2 PING timeout) and there is nothing in the logs. Restarting (systemctl restart keydb) solves the issue, until it starts again.

KeyDB 6.3.1 is the version.

After that, I've stopped/disabled KeyDB, and installed Redis 6.2.7; since that, with a very similar config file, no problems, crash or whatever, on the same machine where KeyDB stopped working. Note that machine is simply listening on the LAN interface and localhost, no cluster or replication is enabled here. I really don't know how to help debug this...

— Reply to this email directly, view it on GitHub https://github.com/Snapchat/KeyDB/issues/474#issuecomment-1218293913, or unsubscribe https://github.com/notifications/unsubscribe-auth/AA5W4AQ26J4NY6LYF2JS5E3VZUNPFANCNFSM54RHRK2Q . You are receiving this because you were mentioned.Message ID: @.***>

Aug 17 '22 19:08 JohnSully

@JohnSully Hi John, was this ever resolved?

Nov 16 '22 09:11 timuster

This is still very much an issue that effects our cluster on the daily. At this point we are considering switching to another solution.

Nov 29 '22 15:11 randominternetuser

Downgrading to 6.2.2 workarounds it. But consider KeyDB as dead as there are no fixes for show-stopper bugs since they joned Snap Inc.

Nov 29 '22 16:11 lenny87

Trying to look into this issue but can't repro in my dev environment, if anyone still sees this issue, could you run with config "loglevel debug" or "loglevel verbose" and share further logs as well as traffic to the server(what commands and how often) at the time of the hang?

Jan 31 '23 01:01 msotheeswaran-sc

It's extremely difficult to reproduce on our end we ended up downgrading to 6.2.2, but when it was occurring a random instance would hang sometimes days, weeks or months apart from the last instance.

Jan 31 '23 01:01 randominternetuser

@randominternetuser can you share your config/workload?

Jan 31 '23 03:01 msotheeswaran-sc

Active replica, multimaster, docker multi-host 8 node primarily used as a messaging service with limited key value store.

Jan 31 '23 03:01 randominternetuser

can you share the config files(you can redact any names/hosts/passwords etc), I'm looking to see if there are any common non-default configs among all instances of this bug occuring.

Jan 31 '23 03:01 msotheeswaran-sc

As we are using the docker image we don't actually alter the config at all we have startup arguments for the following:

active-replica=yes multi-master=yes requirepass=XXXXX masterauth=XXXXX replicaof=<..repeating for each node>

Every other config value is fully default, we do not volume mount the config either so it has not persisted from older versions.

Feb 05 '23 20:02 randominternetuser

I think we have the same problem:

2 servers
Debian 11
keydb-server 6:6.3.2-1+deb11u,
multi master & active replica

Very modest traffic, I cannot relate the hanging to any event in particular, however we noticed this pattern:

Before the server become completely unusable, HAProxy checks start flapping due to request timeout (probably due to high response time from keydb)
After one server hangs and the traffic is redirected to the other one (via keepalived vip), a hang will happen there as well after a short interval (could be minutes)

Mar 03 '23 08:03 exeba

Same here. Debian GNU/Linux 11 (bullseye) keydb-server 6:6.3.1-1+deb11u1 standalone Cannot connect and last messages in log

137:251:M 03 Mar 2023 07:52:46.084 * 100 changes in 300 seconds. Saving...
137:251:M 03 Mar 2023 07:52:46.085 * Background saving started
137:6630:M 03 Mar 2023 07:52:46.092 * DB saved on disk
137:6630:M 03 Mar 2023 07:52:46.094 * RDB: 12 MB of memory used by copy-on-write
137:251:M 03 Mar 2023 07:52:46.185 * Background saving terminated with success

config:

bind 0.0.0.0
protected-mode yes
port 6380
tcp-backlog 511
timeout 0
tcp-keepalive 300

daemonize yes
supervised no
pidfile /var/run/keydb_beta_front_api/keydb-server_beta_front_api.pid
loglevel notice
logfile /var/log/keydb/keydb-server_beta_front_api.log
databases 16

always-show-logo yes

stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir /var/lib/keydb_beta_front_api

replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100

lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no

appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble yes

lua-time-limit 5000

latency-monitor-threshold 0

notify-keyspace-events ""

hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes
server-threads 2

Made gdb with command: thread apply all bt

Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__futex_abstimed_wait_common64 (private=128, cancel=true, abstime=0x0, op=265, expected=251, futex_word=0x7f76627fc990) at ./nptl/futex-internal.c:57
57      ./nptl/futex-internal.c: No such file or directory.
(gdb) thread apply all bt

Thread 13 (Thread 0x7f7660fff6c0 (LWP 253) "jemalloc_bg_thd"):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f766c40abe0) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f766c40abe0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87
#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f766c40abe0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f766d92f3f8 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f766c40ac28, cond=0x7f766c40abb8) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f766c40abb8, mutex=0x7f766c40ac28) at ./nptl/pthread_cond_wait.c:618
#5  0x0000560b84cc48f0 in ?? ()
#6  0x0000560b84cc5808 in ?? ()
#7  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#8  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 12 (Thread 0x7f7661ffb6c0 (LWP 252) "keydb-server"):
#0  0x00007f766d9afcb6 in epoll_wait (epfd=8, events=0x7f766c35d600, maxevents=10128, timeout=100) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x0000560b84b54d5d in aeProcessEvents ()
#2  0x0000560b84b5567e in aeMain ()
#3  0x0000560b84b6ce60 in workerThreadMain(void*) ()
#4  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#5  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 11 (Thread 0x7f76627fc6c0 (LWP 251) "keydb-server"):
#0  0x00007f766d9afcb6 in epoll_wait (epfd=5, events=0x7f766c2d6ec0, maxevents=10128, timeout=100) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x0000560b84b54d5d in aeProcessEvents ()
#2  0x0000560b84b5567e in aeMain ()
#3  0x0000560b84b6ce60 in workerThreadMain(void*) ()
#4  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#5  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 10 (Thread 0x7f7662ffd6c0 (LWP 250) "keydb-server"):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x560b84dd242c <time_thread_cv+44>) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x560b84dd242c <time_thread_cv+44>, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87
#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x560b84dd242c <time_thread_cv+44>, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f766d92f3f8 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f766c20a048, cond=0x560b84dd2400 <time_thread_cv>) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x560b84dd2400 <time_thread_cv>, mutex=0x7f766c20a048) at ./nptl/pthread_cond_wait.c:618
#5  0x00007f766dc3341d in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from target:/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x0000560b84b50c29 in ?? ()
#7  0x0000560b84b6cb03 in timeThreadMain(void*) ()
#8  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 9 (Thread 0x7f76637fe6c0 (LWP 241) "jemalloc_bg_thd"):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f766c40ab14) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f766c40ab14, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87
#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f766c40ab14, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f766d92f3f8 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f766c40ab58, cond=0x7f766c40aae8) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f766c40aae8, mutex=0x7f766c40ab58) at ./nptl/pthread_cond_wait.c:618
#5  0x0000560b84cc48f0 in ?? ()
#6  0x0000560b84cc5808 in ?? ()
#7  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#8  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 8 (Thread 0x7f7663fff6c0 (LWP 236) "jemalloc_bg_thd"):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f766c40aa40) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f766c40aa40, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87
#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f766c40aa40, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
--Type <RET> for more, q to quit, c to continue without paging--
#3  0x00007f766d92f3f8 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f766c40aa88, cond=0x7f766c40aa18) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f766c40aa18, mutex=0x7f766c40aa88) at ./nptl/pthread_cond_wait.c:618
#5  0x0000560b84cc48f0 in ?? ()
#6  0x0000560b84cc5808 in ?? ()
#7  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#8  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 7 (Thread 0x7f76690916c0 (LWP 235) "keydb-server"):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f766c247fb0) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f766c247fb0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87
#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f766c247fb0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f766d92f3f8 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f766c247f60, cond=0x7f766c247f88) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f766c247f88, mutex=0x7f766c247f60) at ./nptl/pthread_cond_wait.c:618
#5  0x00007f766dc3341d in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from target:/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x0000560b84c7a94f in AsyncWorkQueue::WorkerThreadMain() ()
#7  0x00007f766dc604a3 in ?? () from target:/lib/x86_64-linux-gnu/libstdc++.so.6
#8  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 6 (Thread 0x7f76698926c0 (LWP 234) "keydb-server"):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f766c247fb4) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f766c247fb4, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87
#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f766c247fb4, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f766d92f3f8 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f766c247f60, cond=0x7f766c247f88) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f766c247f88, mutex=0x7f766c247f60) at ./nptl/pthread_cond_wait.c:618
#5  0x00007f766dc3341d in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from target:/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x0000560b84c7a94f in AsyncWorkQueue::WorkerThreadMain() ()
#7  0x00007f766dc604a3 in ?? () from target:/lib/x86_64-linux-gnu/libstdc++.so.6
#8  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#9  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 5 (Thread 0x7f766a0936c0 (LWP 233) "jemalloc_bg_thd"):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f766c40a970) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f766c40a970, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87
#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f766c40a970, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f766d92f3f8 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f766c40a9b8, cond=0x7f766c40a948) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f766c40a948, mutex=0x7f766c40a9b8) at ./nptl/pthread_cond_wait.c:618
#5  0x0000560b84cc48f0 in ?? ()
#6  0x0000560b84cc5ab8 in ?? ()
#7  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#8  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 4 (Thread 0x7f766a8946c0 (LWP 232) "bio_lazy_free"):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x560b84dd68c8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x560b84dd68c8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87
#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x560b84dd68c8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f766d92f3f8 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x560b84dd64f0, cond=0x560b84dd68a0) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x560b84dd68a0, mutex=0x560b84dd64f0) at ./nptl/pthread_cond_wait.c:618
#5  0x0000560b84c1b215 in bioProcessBackgroundJobs(void*) ()
#6  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#7  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 3 (Thread 0x7f766b0956c0 (LWP 231) "bio_aof_fsync"):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x560b84dd6898) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x560b84dd6898, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87--Type <RET> for more, q to quit, c to continue without paging--

#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x560b84dd6898, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f766d92f3f8 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x560b84dd64c8, cond=0x560b84dd6870) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x560b84dd6870, mutex=0x560b84dd64c8) at ./nptl/pthread_cond_wait.c:618
#5  0x0000560b84c1b215 in bioProcessBackgroundJobs(void*) ()
#6  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#7  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 2 (Thread 0x7f766b8966c0 (LWP 230) "bio_close_file"):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x560b84dd6868) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x560b84dd6868, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87
#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x560b84dd6868, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007f766d92f3f8 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x560b84dd64a0, cond=0x560b84dd6840) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x560b84dd6840, mutex=0x560b84dd64a0) at ./nptl/pthread_cond_wait.c:618
#5  0x0000560b84c1b215 in bioProcessBackgroundJobs(void*) ()
#6  0x00007f766d92ffd4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#7  0x00007f766d9af8d0 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 1 (Thread 0x7f766c7c1340 (LWP 137) "keydb-server"):
#0  __futex_abstimed_wait_common64 (private=128, cancel=true, abstime=0x0, op=265, expected=251, futex_word=0x7f76627fc990) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f76627fc990, expected=251, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=128, cancel=cancel@entry=true) at ./nptl/futex-internal.c:87
#2  0x00007f766d92cd9b in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f76627fc990, expected=<optimized out>, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=128) at ./nptl/futex-internal.c:139
#3  0x00007f766d931ac3 in __pthread_clockjoin_ex (threadid=140146435409600, thread_return=0x7fffe04d7290, clockid=0, abstime=0x0, block=<optimized out>) at ./nptl/pthread_join_common.c:102
#4  0x0000560b84b4b14c in main ()
(gdb)

and part of strace with threads:

strace: Process 137 attached with 13 threads
[pid   253] futex(0x7f766c40abe0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   241] futex(0x7f766c40ab14, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   236] futex(0x7f766c40aa40, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   233] restart_syscall(<... resuming interrupted futex ...> <unfinished ...>
[pid   232] futex(0x560b84dd68c8, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   231] futex(0x560b84dd6898, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   230] futex(0x560b84dd6868, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   137] futex(0x7f76627fc990, FUTEX_WAIT_BITSET|FUTEX_CLOCK_REALTIME, 251, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... futex resumed>)        = 0
[pid   250] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 47) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11462
[pid   251] read(11462, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11462 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   235] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 67) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... openat resumed>)       = 11462
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11462, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11462 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   234] <... futex resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[{EPOLLIN, {u32=14, u64=14}}], 10128, 100) = 1
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] accept(14,  <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... accept resumed>{sa_family=AF_INET, sin_port=htons(14100), sin_addr=inet_addr("172.24.128.1")}, [128->16]) = 11462
[pid   250] <... futex resumed>)        = 0
[pid   251] fcntl(11462, F_GETFD <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... fcntl resumed>)        = 0
[pid   251] fcntl(11462, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... fcntl resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] fcntl(11462, F_GETFL <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... fcntl resumed>)        = 0x2 (flags O_RDWR)
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] fcntl(11462, F_SETFL, O_RDWR|O_NONBLOCK) = 0
[pid   251] setsockopt(11462, SOL_TCP, TCP_NODELAY, [1], 4 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... setsockopt resumed>)   = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] setsockopt(11462, SOL_SOCKET, SO_KEEPALIVE, [1], 4) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] setsockopt(11462, SOL_TCP, TCP_KEEPIDLE, [300], 4 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... setsockopt resumed>)   = 0
[pid   251] setsockopt(11462, SOL_TCP, TCP_KEEPINTVL, [100], 4) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] setsockopt(11462, SOL_TCP, TCP_KEEPCNT, [3], 4 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... setsockopt resumed>)   = 0
[pid   251] accept(14,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... accept resumed>0x7f76627f9fd0, [128]) = -1 EAGAIN (Resource temporarily unavailable)
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 89) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11463 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11463,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11463 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11463,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11463 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid()                    = 137
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... openat resumed>)       = 11463
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11463, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11463 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11463 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11463)                = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY) = 11463
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11463,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11463 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   250] <... futex resumed>)        = 0
[pid   251] read(11463,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... openat resumed>)       = 11463
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11463,  <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11463)                = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY) = 11463
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11463,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11463 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY) = 11463
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11463,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] getpid()                    = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11463
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11463, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11463 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11463
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11463, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11463 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] getpid()                    = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11463
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11463, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11463 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11463
[pid   251] read(11463,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11463 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY) = 11463
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11463,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11463 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11463
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11463, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11463)                = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY) = 11463
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11463,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11463 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] getpid()                    = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11463
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11463, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11463 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[{EPOLLIN, {u32=16, u64=16}}], 10128, 100) = 1
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   252] accept(16,  <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] <... accept resumed>{sa_family=AF_INET, sin_port=htons(55568), sin_addr=inet_addr("172.24.128.2")}, [128->16]) = 11463
[pid   250] <... futex resumed>)        = 0
[pid   252] fcntl(11463, F_GETFD <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] <... fcntl resumed>)        = 0
[pid   252] fcntl(11463, F_SETFD, FD_CLOEXEC) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] fcntl(11463, F_GETFL <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] <... fcntl resumed>)        = 0x2 (flags O_RDWR)
[pid   252] fcntl(11463, F_SETFL, O_RDWR|O_NONBLOCK) = 0
[pid   252] setsockopt(11463, SOL_TCP, TCP_NODELAY, [1], 4 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] <... setsockopt resumed>)   = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] setsockopt(11463, SOL_SOCKET, SO_KEEPALIVE, [1], 4) = 0
[pid   252] setsockopt(11463, SOL_TCP, TCP_KEEPIDLE, [300], 4 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] <... setsockopt resumed>)   = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] setsockopt(11463, SOL_TCP, TCP_KEEPINTVL, [100], 4) = 0
[pid   252] setsockopt(11463, SOL_TCP, TCP_KEEPCNT, [3], 4 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] <... setsockopt resumed>)   = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] accept(16, 0x7f7661ff8fd0, [128]) = -1 EAGAIN (Resource temporarily unavailable)
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 64) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11464
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11464,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247f60, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid   251] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid   251] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] <... futex resumed>)        = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11464
[pid   251] read(11464,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11464 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11464 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x7f766da80700, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] futex(0x7f766da80700, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid   252] <... futex resumed>)        = 0
[pid   251] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] futex(0x7f766da80700, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] <... futex resumed>)        = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY) = 11464
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11464,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11464)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY) = 11464
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11464,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11464)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   235] <... futex resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11464
[pid   251] read(11464,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11464)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11464
[pid   251] read(11464,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11464 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   234] <... futex resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY) = 11464
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11464,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11464)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid()                    = 137
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11464
[pid   251] read(11464,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11464)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11464
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11464
[pid   251] read(11464,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11464)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] <... futex resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11464
[pid   251] read(11464,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11464)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY) = 11464
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(11464,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11464 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] getpid()                    = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11464
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11464, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11464 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[{EPOLLIN, {u32=16, u64=16}}], 10128, 100) = 1
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   252] accept(16,  <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] <... accept resumed>{sa_family=AF_INET, sin_port=htons(33778), sin_addr=inet_addr("172.24.128.2")}, [128->16]) = 11464
[pid   250] <... futex resumed>)        = 0
[pid   252] fcntl(11464, F_GETFD <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] <... fcntl resumed>)        = 0
[pid   252] fcntl(11464, F_SETFD, FD_CLOEXEC) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] write(7, "\1\0\0\0\0\0\0\0\0\0\0\0\1\0\0\0\0{``v\177\0\0\0\0\0\0\0\0\0\0", 32 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] <... write resumed>)        = 32
[pid   251] <... epoll_wait resumed>[{EPOLLIN, {u32=6, u64=6}}], 10128, 100) = 1
[pid   252] accept(16,  <unfinished ...>
[pid   251] read(6,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] <... accept resumed>0x7f7661ff8fd0, [128]) = -1 EAGAIN (Resource temporarily unavailable)
[pid   251] <... read resumed>"\1\0\0\0\0\0\0\0\0\0\0\0\1\0\0\0\0{``v\177\0\0\0\0\0\0\0\0\0\0", 32) = 32
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] fcntl(11464, F_GETFL)       = 0x2 (flags O_RDWR)
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] fcntl(11464, F_SETFL, O_RDWR|O_NONBLOCK <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... fcntl resumed>)        = 0
[pid   251] setsockopt(11464, SOL_TCP, TCP_NODELAY, [1], 4 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... setsockopt resumed>)   = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] setsockopt(11464, SOL_SOCKET, SO_KEEPALIVE, [1], 4) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] setsockopt(11464, SOL_TCP, TCP_KEEPIDLE, [300], 4 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... setsockopt resumed>)   = 0
[pid   251] setsockopt(11464, SOL_TCP, TCP_KEEPINTVL, [100], 4) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] setsockopt(11464, SOL_TCP, TCP_KEEPCNT, [3], 4 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... setsockopt resumed>)   = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] read(6,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>0x7f76627fa0c0, 32) = -1 EAGAIN (Resource temporarily unavailable)
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 77) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 75) = 0
[pid   252] <... futex resumed>)        = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11465
[pid   251] read(11465,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11465)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   251] getpid( <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11465
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11465, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11465 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... openat resumed>)       = 11465
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11465,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11465)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[{EPOLLIN, {u32=16, u64=16}}], 10128, 100) = 1
[pid   252] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   252] accept(16,  <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] <... accept resumed>{sa_family=AF_INET, sin_port=htons(33784), sin_addr=inet_addr("172.24.128.2")}, [128->16]) = 11465
[pid   250] <... futex resumed>)        = 0
[pid   252] fcntl(11465, F_GETFD <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] <... fcntl resumed>)        = 0
[pid   252] fcntl(11465, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] <... fcntl resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] fcntl(11465, F_GETFL)       = 0x2 (flags O_RDWR)
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] fcntl(11465, F_SETFL, O_RDWR|O_NONBLOCK <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] <... fcntl resumed>)        = 0
[pid   252] setsockopt(11465, SOL_TCP, TCP_NODELAY, [1], 4 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] <... setsockopt resumed>)   = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] setsockopt(11465, SOL_SOCKET, SO_KEEPALIVE, [1], 4) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] setsockopt(11465, SOL_TCP, TCP_KEEPIDLE, [300], 4 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] <... setsockopt resumed>)   = 0
[pid   252] setsockopt(11465, SOL_TCP, TCP_KEEPINTVL, [100], 4 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] <... setsockopt resumed>)   = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] setsockopt(11465, SOL_TCP, TCP_KEEPCNT, [3], 4) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   252] accept(16,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   252] <... accept resumed>0x7f7661ff8fd0, [128]) = -1 EAGAIN (Resource temporarily unavailable)
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 63) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid()                    = 137
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... openat resumed>)       = 11466
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11466, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11466 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11466
[pid   251] read(11466, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11466 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11466
[pid   251] read(11466,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11466)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11466
[pid   251] read(11466,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11466)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11466
[pid   251] read(11466,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11466)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11466
[pid   251] read(11466,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11466)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   251] getpid( <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... getpid resumed>)       = 137
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... openat resumed>)       = 11466
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] read(11466, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] close(11466 <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... close resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY) = 11466
[pid   251] read(11466, "137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11466 <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid()                    = 137
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... openat resumed>)       = 11466
[pid   250] <... futex resumed>)        = 0
[pid   251] read(11466,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   251] close(11466 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... close resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   235] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   252] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid   252] <... futex resumed>)        = 0
[pid   250] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11466
[pid   251] read(11466,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11466)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb4, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   234] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   234] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   234] <... futex resumed>)        = 0
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   234] futex(0x7f766c247fb0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1) = 0
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   251] <... getpid resumed>)       = 137
[pid   250] <... futex resumed>)        = 0
[pid   251] openat(AT_FDCWD, "/proc/137/stat", O_RDONLY <unfinished ...>
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] <... openat resumed>)       = 11466
[pid   251] read(11466,  <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... read resumed>"137 (keydb-server) S 1 137 137 0"..., 4096) = 336
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] close(11466)                = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] futex(0x7f766c247fb0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   251] <... futex resumed>)        = 1
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100},  <unfinished ...>
[pid   251] epoll_wait(5,  <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   250] <... clock_nanosleep resumed>NULL) = 0
[pid   235] futex(0x7f766c247f60, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   250] futex(0x560b84dd2428, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   235] <... futex resumed>)        = 0
[pid   235] futex(0x7f766c247fb4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   252] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   252] futex(0x560b84dd2428, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   250] futex(0x7f766c20a048, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid   252] epoll_wait(8,  <unfinished ...>
[pid   250] <... futex resumed>)        = 0
[pid   250] clock_nanosleep(CLOCK_MONOTONIC, 0, {tv_sec=0, tv_nsec=100}, NULL) = 0
[pid   250] futex(0x560b84dd242c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid   251] <... epoll_wait resumed>[], 10128, 100) = 0
[pid   251] futex(0x560b84dd242c, FUTEX_WAKE_PRIVATE, 1) = 1
[pid   250] <... futex resumed>)        = 0
[pid   251] getpid( <unfinished ...>

Mar 03 '23 08:03 sergeymavrin

I will be good idea to test it on 6.3.2 which is release more than month ago and should have many things fixed.

Mar 03 '23 08:03 lenny87

I will give it a try, but as of comment upper then my - there already 6.3.2 and have the same

Mar 03 '23 08:03 sergeymavrin

@sergeymavrin Thanks for the detailed debug info, I was unable to repro but this should help investigate!

Mar 03 '23 17:03 msotheeswaran-sc

Hi @sergeymavrin, based on the backtraces and strace output, it seems like the event loop is still executing (keydb is leaving epoll_wait executing before and after sleep methods and returning to epoll_wait) but is not responding to clients, can you confirm this is what is happening?

Mar 08 '23 19:03 msotheeswaran-sc

@msotheeswaran yes, as of the trace - it seems, that it's working, but no clients allowed to connect

Mar 09 '23 04:03 sergeymavrin

@sergeymavrin can you check if there are a large number of open FDs might be a dupe of #465 or #453

Mar 09 '23 04:03 msotheeswaran-sc

@msotheeswaran not #465 , but seems lilke #453. Have 26 keydb instances on one host and now they are hold 326017 fds. As I understand fix #579 will be in 6.3.3 release?

Mar 09 '23 06:03 sergeymavrin