pmdaPMID(3) — Linux manual page


PMDAPMID(3)               Library Functions Manual               PMDAPMID(3)

NAME         top

       pmdaPMID - translate a dynamic performance metric name into a PMID

C SYNOPSIS         top

       #include <pcp/pmapi.h>
       #include <pcp/pmda.h>

       int pmdaPMID(char *name, pmID *pmid, pmdaExt *pmda);

       cc ... -lpcp_pmda -lpcp

DESCRIPTION         top

       As part of the Performance Metrics Domain Agent (PMDA) API (see
       PMDA(3)), pmdaPMID is the generic callback for translating a dynamic
       metric name into a PMID (pmid).

       Because implementing dynamic performance metrics requires specific
       PMDA support, and the facility is an optional component of a PMDA
       (most PMDAs do not support dynamic performance metrics), pmdaPMID is
       a skeleton implementation that returns PM_ERR_NAME.

       A PMDA that supports dynamic performance metrics will provide a
       private callback that replaces pmdaPMID (by assignment to
       version.four.pmid of the pmdaInterface structure) and implements the
       translation from a dynamic performance metric name into the
       associated pmid.

DIAGNOSTICS         top

       pmdaPMID returns PM_ERR_NAME if the name is not recognized or cannot
       be translated, else returns 0.

CAVEAT         top

       The PMDA must be using PMDA_PROTOCOL_4 or later, as specified in the
       call to pmdaDSO(3) or pmdaDaemon(3).

SEE ALSO         top

       PMAPI(3), PMDA(3), pmdaDaemon(3), pmdaDSO(3), pmdaMain(3) and

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
       2020-11-01.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-10-30.)  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                         PMDAPMID(3)

Pages that refer to this page: pmdaGetContext(3)pmdamain(3)pmdaMain(3)pmdaSetCheckCallBack(3)pmdaSetDoneCallBack(3)pmdaSetEndContextCallBack(3)pmdaSetResultCallBack(3)