pmdaib(1) — Linux manual page


PMDAIB(1)                  General Commands Manual                 PMDAIB(1)

NAME         top

       pmdaib - Infiniband performance metrics domain agent (PMDA)

SYNOPSYS         top

       $PCP_PMDAS_DIR/infiniband/pmdaib [-c configFile] [-D debug] [-d
       domain] [-l logfile] [-w]

DESCRIPTION         top

       pmdaib is a Performance Metrics Domain Agent (PMDA) which exports
       information and performance metrics about local Infiniband HCAs and
       local or remote Infiniband GUIDs.

       A brief description of the pmdaib command line options follows:

       -c   Location of the config file.  By default, the config file is
            named $PCP_PMDAS_DIR/infiniband/config.  See CONFIG FILE for
            more information.

       -D   A debug values, as specified by pmdbg(1)

       -d   Specify an alternate performance metrics domain number.  Almost
            never necessary.

       -l   Location of the log file.  By default, a log file named ib.log
            is written to $PCP_LOG_DIR/pmcd.  If the log file cannot be
            created or is not writable, output is written to the standard
            error instead.

       -w   Write out the default config file to $PCP_PMDAS_DIRS/infiniband
            and exit immediately.  The written config file will contain the
            local HCA ports.  It will not overwrite an existing file.  This
            argument should only be used to create the template config file
            and should never appear in pmcd.conf.  See CONFIG FILE for more
            information on the file format and on monitoring remote GUIDs.

CONFIG FILE         top

       By default, the PMDA will operate without using a config file.  In
       this mode of operation the local HCA ports will be monitored.  Note
       that if a new HCA is added to the machine that instance domain naming
       may change because it will always be based on the kernel's naming.

       In cases where this is not acceptable, or in the case where
       monitoring remote Infiniband ports is required, a config file must be
       created.  A "template" file can be created by running the pmdaib
       daemon with the -w argument.  This will create a config file with the
       local ports and GUIDs.

       If the config file is executable then it will be run and the output
       will be used as the config file.

       The config file is composed of line-based records.  Blank lines and
       everything after the hash (#) character are ignored.  Each line has 6

       [instName] [portGUID] [portNum] via [localPortName]:[localPortNum]

       The first field is used to give a static instance name to the
       Infiniband port that has a specific GUID.  All of the other fields
       must be properly specified in order to monitor a particular port.

       For example, to monitor port 1 of the local HCA called 'mthca0' a
       possible config file line would be:

       myPort1 0xdeadbeef01234567 1 via mthca0:1

       Remote ports can be easily monitored by specifying the GUID of the
       HCA or switch and specifying the remote port number.  The
       localPortName:localPortNum tuple specifies which local HCA and port
       to use as the "first hop" in contacting the remote GUID.  E.g., to
       monitor port 13 of a remote switch which is connected to the fabric
       on the first port of the second HCA:

       switch13 0xfeeffeefabcdabcd 13 via mthca1:1

LOCAL CONTEXT         top

       The Infiniband pmda also supports accessing the metrics via
       PM_CONTEXT_LOCAL when using the PMAPI interface.  In order to use the
       Infiniband pmda in this way, set the environment variable
       PMDA_LOCAL_IB prior to calling pmNewContext(3).

SEE ALSO         top

       PCPIntro(1), pmcd(1), PMAPI(3), pmContextNew(3) and ibnetdiscover(8).

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
       2020-08-13.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-08-11.)  If you discover any
       rendering problems in this HTML version of the page, or you believe
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       (which is not part of the original manual page), send a mail to

Performance Co-Pilot                 PCP                           PMDAIB(1)