pmdazfs(1) — Linux manual page


PMDAZFS(1)               General Commands Manual              PMDAZFS(1)

NAME         top

       pmdazfs - ZFS filesystem performance metrics domain agent (PMDA)
       for Linux

SYNOPSIS         top

       $PCP_PMDAS_DIR/linux_zfs/pmdazfs [-d domain] [-l logfile]

DESCRIPTION         top

       pmdazfs is a Performance Metrics Domain Agent (PMDA) which
       extracts performance metrics describing the state of the ZFS
       filesystem from the stats files located in /proc.

       The zfs PMDA exports metrics that measure information about
       caching (ARC, L2ARC, ZIL, VDEV), buffering, RAIDZ, dnode
       operations and pools IO.

       A brief description of the pmdazfs command line options follows:

       -d   The performance metrics domain number must be set to a
            unique value.

       -l   Location of the log file.  By default, a log file named
            zfs.log is written in the current directory of pmcd(1) when
            pmdazfs is started, i.e.  $PCP_LOG_DIR/pmcd.  If the log
            file cannot be created or is not writable, output is written
            to the standard error instead.

INSTALLATION         top

       OpenZFS is not included in PCP, and has to be installed on the
       system from the available packages or source.  Once OpenZFS is
       installed and configured, the stats files should appear in /proc
       and PMDA can be added to PMCD using the Install script:

            # cd $PCP_PMDAS_DIR/zfs
            # ./Install

       To remove PMDA use the Remove script:

            # cd $PCP_PMDAS_DIR/zfs
            # ./Remove

SEE ALSO         top

       PCPIntro(1), pmcd(1), pcp.conf(5) and pcp.env(5).

COLOPHON         top

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Performance Co-Pilot               PCP                        PMDAZFS(1)