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5.3. Performing Minimal PCP Setup to Gather File System Data
The following procedure provides instructions on how to install a minimal PCP setup to collect statistics on Red Hat Enterprise Linux. The minimal setup involves adding the minimum number of packages on a production system needed to gather data for further analysis.
The resulting
tar.gz archive of the pmlogger output can be analyzed by using various PCP tools, such as PCP Charts, and compared with other sources of performance information.
- Install the pcp package:
#yum install pcp - Run the
pmlogconfutility to update thepmloggerconfiguration and enable the XFS information, XFS data, and log I/O traffic groups:#pmlogconf -r/var/lib/pcp/config/pmlogger/config.default - Start the
pmloggerservice:#systemctl start pmcd.service#systemctl start pmlogger.service - Perform operations on the XFS file system.
- Stop the
pmloggerservice:#systemctl stop pmcd.service#systemctl stop pmlogger.service - Collect the output and save it to a
tar.gzfile named based on the hostname and the current date and time:#cd /var/log/pcp/pmlogger/#tar -czf $(hostname).$(date +%F-%Hh%M).pcp.tar.gz $(hostname)
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