Marko Myllynen
Marko Myllynen
When using tlog on systems where journal is not an option (not available or not in use for some reason), logging to a separate file allows to separate recorded sessions...
tlog error messages could be improved to make troubleshooting easier. For example: 1) If tlog-rec-session.conf is missing the opening curly bracket, no error message is printed at all 2) No...
It would be helpful to have tlog(7) manual page part of the tlog package to have a quick overview available and for recap when starting to implement tlog on a...
Many distributions use device UUIDs e.g. in their fstab files and commands like `blkid` and `lsblk -f` print device UUIDs. It looks like that PCP doesn't provide device UUIDs: ```...
CPU values get reset when CPU first goes offline and then comes back online: ``` # pmrep -i cpu3 -r -s 1 kernel.percpu.cpu.idle k.p.c.idle cpu3 millisec 1180890 # echo 0...
The BCC PMDA netproc module is a very useful module that provides per-process network (TCP/UDP) statistics as PCP metrics. It would be beneficial to implement a corresponding BPF PMDA module...
BCC PMDA biotop module has metric `bcc.proc.io.perdev.io` which probably should be renamed as `bcc.proc.io.perdev.count` and I think its unit should be `count` not `none`. Given that the instances change regularly...
Modern applications override configuration file values with corresponding environment variable values. However, pmlogger and pmrep et al prioritize configuration file over environment variable, see their manual pages. PCP v6 would...
All tools processing PCP log archives are of form pmlog* except for the tool to dump log contents which is, of course, pmdumplog. Consider provider providing a sym link pmlogdump...
As discussed in https://groups.io/g/pcp/topic/6111366, when creating an archive with pmlogger(1) the prologue is logged ~0.02 seconds before the actual data and we see for example with pmdumptext(1) shows results being...