Use → PCP Data collection

The following describes how to check the PCP data collection.

Prerequisites

The PCP software should have been installed on the compute nodes and configured using the supplied templates.

Start PCP

# systemctl enable pmcd pmlogger
# systemctl start pmcd pmlogger

Check for Errors

It may take several seconds for all the PMDAs to start up

$ cat /var/log/pcp/pmcd/*.log
$ cat /<GLOBAL_SHARED_SPACE>/supremm/pmlogger/`hostname`/Y/M/D/pmlogger.log

Check for Running processes

  • Ensure the pmcd, pmlogger and any pmda processes you enabled are running
$ ps -ef | grep -i pcp
    pcp      37221     1  0 Sep22 ?        00:00:03 /usr/libexec/pcp/bin/pmcd
    root     37223 37221  0 Sep22 ?        00:00:00 /var/lib/pcp/pmdas/root/pmdaroot
    root     37224 37221  0 Sep22 ?        00:11:43 /var/lib/pcp/pmdas/proc/pmdaproc -A
    root     37225 37221  0 Sep22 ?        00:00:00 /var/lib/pcp/pmdas/xfs/pmdaxfs -d 11
    root     37226 37221  0 Sep22 ?        00:00:13 /var/lib/pcp/pmdas/linux/pmdalinux
    pcp      37227 37221  0 Sep22 ?        00:00:03 /var/lib/pcp/pmdas/logger/pmdalogger /var/lib/pcp/config/logger/logger.conf
    pcp      37228 37221  0 Sep22 ?        00:00:30 /var/lib/pcp/pmdas/perfevent/pmdaperfevent -d 127
    pcp      42945     1  0 00:10 ?        00:00:00 pmlogger -r -m pmlogger_daily -P -l pmlogger.log -c /etc/pcp/pmlogger/pmlogger-config.ubccr 20150924.00.10

Check that daily archives are being created

It may take several seconds to minutes for the log to accumulate data depending on your logging frequency

$ cd /<GLOBAL_SHARED_SPACE>/supremm/pmlogger/`hostname`/Y/M/D
$ ls
    20150924.14.16-00.0
    20150924.14.16-00.index
    20150924.14.16-00.meta

$ pmdumplog -a 20150924.14.16-00

Ensure that the archives have the metrics you expect.

Check that job start and end archives are being created

If you configured data collection in the job prologue and epilogue then check that that these archives are created correctly.

$ cd /<GLOBAL_SHARED_SPACE>/supremm/pmlogger/`hostname`/Y/M/D
$ ls job*
    job-4588146-begin-20180915.09.29.16.0
    job-4588146-begin-20180915.09.29.16.index
    job-4588146-begin-20180915.09.29.16.meta
    job-4588146-end-20180915.11.57.38.0
    job-4588146-end-20180915.11.57.38.index
    job-4588146-end-20180915.11.57.38.meta

$ pmdumplog -a job-4588146-begin-20180915.09.29.16
  ...

$ pmdumplog -a job-4588146-end-20180915.11.57.38
  ...