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PROGRAM:

NAME


pminfo - display information about performance metrics

SYNOPSIS


pminfo [-dfFLmMtTvxz] [-a archive] [-b batchsize] [-c dmfile] [-h hostname] [-K spec]
[-[n|N] pmnsfile] [-O time] [-Z timezone] [metricname ...]

DESCRIPTION


pminfo displays various types of information about performance metrics available through
the facilities of the Performance Co-Pilot (PCP).

Normally pminfo operates on the distributed Performance Metrics Name Space (PMNS), however
if the -n option is specified an alternative local PMNS is loaded from the file pmnsfile.
The -N option supports the same function as -n, except for the handling of duplicate names
for the same Performance Metric Identifier (PMID) in pmnsfile - duplicate names are
allowed with -n they are not allowed with -N.

The metrics of interest are named in the metricname arguments. If metricname is a non-
leaf node in the PMNS, then pminfo will recursively descend the PMNS and report on all
leaf nodes. If no metricname argument is given, the root of the PMNS is used.

Unless directed to another host by the -h option, by default pminfo will contact the
Performance Metrics Collector Daemon (PMCD) on the local host. The connection to a PMCD
is only required if pminfo requires distributed PMNS information, and/or meta-data
describing metrics, and/or metric values, and/or help text.

The -a option causes pminfo to use the specified archive rather than connecting to a PMCD.
The -a , -h and -L options are mutually exclusive.

The -L option causes pminfo to use a local context to collect metrics from PMDAs on the
local host without PMCD. Only some metrics are available in this mode. The -a,-h and -L
options are mutually exclusive.

The -b option may be used to define the maximum size of the group of metrics to be fetched
in a single request for the -f and -v options. The default value for batchsize is 20.

Other options control the specific information to be reported.

-c The dmfile argument specifies a file that contains derived metric definitions in the
format described for pmLoadDerivedConfig(3). The -c option provides a way to load
derived metric definitions that is an alternative to the more generic use of the
PCP_DERIVED_CONFIG environment variable as described in PCPIntro(1). Using the -c
option and the PCP_DERIVED_CONFIG environment variable to specify the same
configuration is a bad idea, so choose one or the other method.

-d Metric descriptions detailing the PMID, data type, data semantics, units, scale and
associated instance domain.

-f Fetch and print values for all instances. When fetching from an archive, only those
instances present in the first archive record for a metric will be displayed; see
also the -O option, else use pmdumplog(1) which may be a better tool for examining
archives.

-F Same as -f but try harder to fetch instances for metrics which have non-enumerable
instance domains (e.g. metrics in the ``proc'' subtree of the default PMNS).

-K When using the -L option to fetch metrics from a local context, the -K option may be
used to control the DSO PMDAs that should be made accessible. The spec argument
conforms to the syntax described in __pmSpecLocalPMDA(3). More than one -K option
may be used.

-m Print the PMID in terse mode.

-M Print the PMID in verbose mode.

-O When used in conjunction with an archive source of metrics and the options -f or -F,
the time argument defines a time origin at which the metrics should be fetched from
the archive. Refer to PCPIntro(1) for a complete description of this option, and the
syntax for the time argument.

When the ``ctime'' format is used for the time argument in a -O option, the timezone
becomes an issue. The default is to use the local timezone on the system where
pminfo is run. The -Z option changes the timezone to timezone in the format of the
environment variable TZ as described in environ(7). The -z option changes the
timezone to the local timezone at the host that is the source of the performance
metrics, as identified via the -a option.

-t Print the ``one line'' help summary, if available.

-T Print the help text, if available.

-v Verify mode in which descriptions and values are retrieved, but only error conditions
are reported. This option silently disables any output from the options -f, -M, -m,
-t and -T.

-x Like the -f option, but with the additional functionality that if a value is
processed that is of type PM_TYPE_EVENT, then the event records will be unpacked and
the details of each event record reported.

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