The following examples use the standard PCP facilities for
collecting the metric values, no external utilities are needed.
The referenced colon-starting metricsets are part of the default
pmrep configuration.
Display network interface metrics on the local host:
$ pmrep network.interface.total.bytes
Display all outgoing network metrics for the wlan0 interface:
$ pmrep -i wlan0 -v network.interface.out
Display the slab total usage (in MB) of two specific slab
instances:
$ pmrep mem.slabinfo.slabs.total_size,,'kmalloc-4k|xfs_inode',MB
Display timestamped vmstat(8) like information using megabytes
instead of kilobytes and also include the number of inodes used
(tab completes available metrics and after a colon metricsets
with bash and zsh):
$ pmrep -p -B MB :vmstat vfs.inodes.count
Display per-device disk reads and writes from the host server1
using two seconds interval and sadf(1) like CSV output format:
$ pmrep -h server1 -t 2s -o csv -k disk.dev.read disk.dev.write
Display processes using at least 100MB of memory using dynamic
headers, additionally use -g to display instance (process) names
in full:
$ pmrep -b MB --limit-filter 100 --dynamic-header proc.memory.rss
Display the predefined set of metrics from the default
pmrep.conf(5) containing details about I/O requests by current
pmlogger process(es):
$ pmrep -gp -i pmlogger :proc-io
Display the three most CPU-using processes:
$ pmrep -1gUJ 3 proc.hog.cpu
Display sar -w and sar -W like information at the same time from
the PCP archive ./20150921.09.13 showing values recorded between
3 - 5 PM:
$ pmrep -a ./20150921.09.13 -S @15:00 -T @17:00 :sar-w :sar-W
Record most relevant CPU, memory, and I/O related information
about every Java process on the system, present and future, to an
archive ./a on one minute interval at every full minute in a
background process:
$ pmrep --daemonize -A 1m -t 1m -i '.*java.*' -j -o archive -F ./a \
:proc-info :proc-cpu :proc-mem :proc-io
Record all 389 Directory Server, XFS file system, and
CPU/memory/disk metrics every five seconds for five minutes to a
PCP archive ./a:
$ pmrep -t 5s -T 5m -o archive -F ./a ds389 xfs kernel.all.cpu mem disk
Record process memory and I/O information for those processes
which are the three most memory-consuming processes:
$ pmrep -o archive -F ./a -J 3 -N proc.memory.rss proc.memory proc.io
