PMTRACE - Online Linux Manual PageSection : 1
Updated : PCP
Source : Performance Co-Pilot
NAMEpmtrace − command line performance instrumentation
SYNOPSISpmtrace [-q?] [−c value | −e command | −v value] [−h host] [−S state] tag
DESCRIPTIONpmtrace 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.
OPTIONSThe 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.
DIAGNOSTICSAll 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.
FILES$PCP_DEMOS_DIR/trace/pmtrace.c source code for pmtrace
ENVIRONMENTSince 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.
PCP ENVIRONMENTEnvironment 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).
SEE ALSOpmcd(1), pmdatrace(1), pmprobe(1), PMAPI(3) and pmdatrace(3). 0
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