pmdarpm(1) — Linux manual page


PMDARPM(1)               General Commands Manual              PMDARPM(1)

NAME         top

       pmdarpm - RPM packages performance metrics domain agent (PMDA)

SYNOPSIS         top

       $PCP_PMDAS_DIR/rpm/pmdarpm [-C] [-d domain] [-l logfile] [-r
       path] [-U username]

DESCRIPTION         top

       pmdarpm is a Performance Metrics Domain Agent (PMDA) which
       extracts performance metrics reflecting the state of the RPM
       package database managed by rpm(1).

       The rpm PMDA exports metrics that describe each package installed
       on a system, as well as some cumulative totals.  When the RPM
       database changes the PMDA automatically detects this and uses a
       background thread to asynchronously refresh its values.

       A brief description of the pmdarpm command line options follows:

       -C   Verify the package iteration code by scanning the RPM
            database once, then exiting.  Only useful for problem
            diagnosis and testing.

       -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
            rpm.log is written in the current directory of pmcd(1) when
            pmdarpm 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.

       -r   Specify an alternate path to the RPM database (default is

       -U   User account under which to run the agent.  The default is
            the unprivileged "pcp" account.

INSTALLATION         top

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

            # cd $PCP_PMDAS_DIR/rpm
            # ./Install

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

            # cd $PCP_PMDAS_DIR/rpm
            # ./Remove

       pmdarpm 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 pmdarpm
              default help text file for the rpm metrics
              installation script for the pmdarpm agent
              undo installation script for the pmdarpm agent
              default log file for error messages and other information
              from pmdarpm


       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 2021-04-01.
       (At that time, the date of the most recent commit that was found
       in the repository was 2021-04-01.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

Performance Co-Pilot               PCP                        PMDARPM(1)