инструментарий производительности командной строки (command line performance instrumentation)
Имя (Name)
pmtrace - command line performance instrumentation
Синопсис (Synopsis)
pmtrace [-q?] [-c value | -e command | -v value] [-h host] [-S
state] tag
Описание (Description)
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.
Параметры (Options)
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.
Диагностика (Diagnostic)
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.
Файлы (Files)
$PCP_DEMOS_DIR/trace/pmtrace.c
source code for pmtrace
Окружение (Environment)
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.
Окружение PCP (PCP environment)
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).
Смотри также (See also)
pmcd(1), pmdatrace(1), pmprobe(1), PMAPI(3) and pmdatrace(3).
