PMTRACE(1) General Commands Manual PMTRACE(1)
pmtrace - command line performance instrumentation
pmtrace [-q?] [-c value | -e command | -v value] [-h host] [-S state] tag
pmtrace provides a simple command line interface to the trace Performance Metrics Domain Agent (PMDA) and the associated pcp_trace library. The default pmtrace behavior is to provide point trace data to the trace PMDA, using the tag argument as the identifying name associated with each trace point. The tag then becomes an instance identifier within the set of trace.point metrics.
The available command line options are: -c value Allow an arbitrary counter value to be exported through the trace.count metrics. -e command Allow an arbitrary command to be executed. This command will be measured as a transaction since it has well defined start and end points. The information is made available through the trace.transact metrics. -h host Sent the trace data to the trace PMDA running on host, rather than the localhost. This overrides use of the environment variable PCP_TRACE_HOST. -q Suppress messages from a successful trace, so that pmtrace runs quietly. -S state Enable internal debugging and tracing. The value of state is a bit-wise combination of debug flags as defined in pmtracestate(3), and may be specified using the decimal or hexadecimal syntax prescribed by strtol(3). -v value Allow an arbitrary floating point value to be exported through the trace.observe metrics. -? Display usage message and exit.
All are generated on standard error and are intended to be self- explanatory. The pmtrace exit status is always zero except when the -e option is in use, in which case the exit status of command is returned.
$PCP_DEMOS_DIR/trace/pmtrace.c source code for pmtrace
Since pmtrace uses the libpcp_trace library routines, the environment variables PCP_TRACE_HOST, PCP_TRACE_PORT, and PCP_TRACE_TIMEOUT are all honored. Refer to pmdatrace(3) for a detailed description of the semantics of each.
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 pcp.conf(5).
pmcd(1), pmdatrace(1), pmprobe(1), PMAPI(3) and pmdatrace(3).
This page is part of the PCP (Performance Co-Pilot) project. Information about the project can be found at ⟨http://www.pcp.io/⟩. If you have a bug report for this manual page, send it to email@example.com. This page was obtained from the project's upstream Git repository ⟨https://github.com/performancecopilot/pcp.git⟩ on 2021-06-20. (At that time, the date of the most recent commit that was found in the repository was 2021-06-19.) 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 firstname.lastname@example.org Performance Co-Pilot PCP PMTRACE(1)
Pages that refer to this page: pmdatrace(1), pmdatrace(3)