Anjali
Anjali
@BBJG001 Were you able to solve this?
@chenhengqi I am using a modified version of this: https://github.com/prathyushpv/klockstat. The workload is LTP syscall tests(https://github.com/linux-test-project/ltp/tree/master/testcases/kernel/syscalls). I get lost samples with spinlocks and rcu. My current page count is set...
@chenhengqi Yeah, its in milliseconds. No, reducing timeout does not help. I will try the new APIs.
@chenhengqi I tried the new API with `wakeup_events` set to 10, `page_cnt` to 65536 with no `timeout` but I still see sample loss. Do you have any other suggestions?
@chenhengqi I did try with 50 too but didn't work. I will try again with maybe 100, 150...
@chenhengqi I tried with different sizes till 1000 but it's still losing samples. I was wondering if there is an upper limit on the number of `wakeup_events`. Also, just to...
@chenhengqi Is there a way I control the number of sample I want to collect(list collect 20% of the total)? I am fine losing some samples but I would like...
@oberpar It says ls: cannot access '/var/lib/dkms/emulab-ipod-dkms/3.3.0/build/ipod.gcno': No such file or directory But I am running as root.
@yonghong-song There are patterns but if I filter lock acquisitions like this, I will be losing data on some locks. For example in stacks like these, I do not have...
@yonghong-song Can you point me to any useful guide to create a helper function to access context?