pmdalustrecomm(1) — Linux manual page


PMDALUSTERCOMM(1)        General Commands Manual       PMDALUSTERCOMM(1)

NAME         top

       pmdalustrecomm - Lustre filesystem comms performance metrics
       domain agent (PMDA)

SYNOPSIS         top

       $PCP_PMDAS_DIR/lustrecomm/pmdalustrecomm [-d domain] [-l logfile]
       [-U username]

DESCRIPTION         top

       pmdalustrecomm is a Performance Metrics Domain Agent (PMDA) which
       extracts performance metrics from the Linux procfs filesystem
       about the state of various aspects of the Lustre filesystem.

       The lustrecomm PMDA exports metrics that focus on distributed
       communication in the filesystem, including metrics related to
       timeouts, network drops, send/recv information and route lengths.
       However, it also covers the memory use of some of the Lustre
       filesystem components.

       A brief description of the pmdalustrecomm command line options

       -d   It is absolutely crucial that the performance metrics domain
            number specified here is unique and consistent.  That is,
            domain should be different for every PMDA on the one host,
            and the same domain number should be used for the same PMDA
            on all hosts.

       -l   Location of the log file.  By default, a log file named
            lustrecomm.log is written in the current directory of
            pmcd(1) when pmdalustrecomm 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

       -U   User account under which to run the agent.  The default is
            the unprivileged "pcp" account in current versions of PCP,
            but in older versions the superuser account ("root") was
            used by default.

INSTALLATION         top

       If you want access to the names, help text and values for the
       lustrecomm performance metrics, do the following as root:

            # cd $PCP_PMDAS_DIR/lustrecomm
            # ./Install

       If you want to undo the installation, do the following as root:

            # cd $PCP_PMDAS_DIR/lustrecomm
            # ./Remove

       pmdalustrecomm is launched by pmcd(1) and should never be
       executed directly.  The Install and Remove scripts notify pmcd(1)
       when the agent is installed or removed.

FILES         top

              command line options used to launch pmdalustrecomm
              default help text file for the lustrecomm metrics
              installation script for the pmdalustrecomm agent
              undo installation script for the pmdalustrecomm agent
              default log file for error messages and other information
              from pmdalustrecomm


       Environment variables with the prefix PCP_ are used to
       parameterize the file and directory names used by PCP.  On each
       installation, the file /etc/pcp.conf contains the local values
       for these variables.  The $PCP_CONF variable may be used to
       specify an alternative configuration file, as described in

SEE ALSO         top

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

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
       Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, send it to  This page was obtained from the
       project's upstream Git repository
       ⟨⟩ on 2023-12-22.
       (At that time, the date of the most recent commit that was found
       in the repository was 2023-12-16.)  If you discover any rendering
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       (which is not part of the original manual page), send a mail to

Performance Co-Pilot               PCP                 PMDALUSTERCOMM(1)