pmNotifyErr(3) — Linux manual page


PMNOTIFYERR(3)            Library Functions Manual            PMNOTIFYERR(3)

NAME         top

       pmNotifyErr, pmSyslog - standard handling of error messages

C SYNOPSIS         top

       #include <pcp/pmapi.h>

       void pmNotifyErr(int priority, const char *message, ...);
       void pmSyslog(int onoff);

       cc ... -lpcp

DESCRIPTION         top

       These routines provide standard handling for error messages from
       within the internals of Performance Co-Pilot (PCP) daemons and
       Performance Metric Domain Agents (PMDAs).

       pmNotifyErr is a printf(3) style function that will format message
       (and any subsequent arguments) with a prefix that includes the
       current date and time from ctime(3), the name of the application from
       pmGetProgname(3), the process's id from getpid(2) and the priority.

       priority should be one of the level LOG_ macros defined for
       syslog(3).  Most typically this would be LOG_INFO, LOG_WARNING or

       pmNotifyErr writes to standard error, which for daemons and PMDAs has
       most likely been redirected to a log file using pmOpenLog(3).
       Additionally message (and any subsequent arguments) may be sent
       forwarded to syslog(3) if pmSyslog has previously been called with
       onoff having a non-zero value.

       Forwarding to syslog(3) can be disabled at any time by calling
       pmSyslog with onoff having a zero value, and this is the starting
       state for each PCP application.

SEE ALSO         top

       getpid(2), ctime(3), PMAPI(3), pmGetProgname(3), pmOpenLog(3),
       printf(3) and syslog(3).

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
       2020-09-18.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-09-18.)  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                      PMNOTIFYERR(3)

Pages that refer to this page: pmnomem(3)pmNoMem(3)