NAME¶

pminfo - display information about performance metrics

SYNOPSIS¶

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

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/--namespace option is specified an alternative local PMNS is loaded from the file pmnsfile. The -N/--uniqnames option supports the same function as -n/--namespace, except for the handling of duplicate names for the same Performance Metric Identifier (PMID) in pmnsfile - duplicate names are allowed with -n/--namespace but they are not allowed with -N/--uniqnames.

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.

If the metricname argument is in numeric dotted notation, it is interpreted as either a 3-dotted pmid (metric identifier - domain, cluster, item numbers) or a 2-dotted indom (instance domain identifier - domain, serial number). In the pmid case, a reverse PMID-to-name lookup is performed, and in the indom case, the instance domain is reported directly. This latter mode can be used to report the instance domain ``one line'' and long form help text summaries.

Unless directed to another host by the -h/--host 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/--archive option causes pminfo to use the specified set of archives rather than connecting to a PMCD. The argument to -a/--archive is a comma-separated list of names, each of which may be the base name of an archive or the name of a directory containing one or more archives.

The -L/--local-PMDA 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/--archive, -h/--host and -L/--local-PMDA options are mutually exclusive.

The -b/--batch option may be used to define the maximum size of the group of metrics to be fetched in a single request for the -f/--fetch and -v/--verify options. The default value for batchsize is 128.

Other options control the specific information to be reported.

-c dmfile, --derived=dmfile

The dmfile argument specifies a file that contains derived metric definitions in the format described for pmLoadDerivedConfig(3). The -c/--derived 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/--derived 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, --desc

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

-f, --fetch

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

-F, --fetchall

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 on some platforms).

-I, --fullindom

Print the InDom in verbose mode.

-K spec, --spec-local=spec

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

-l, --labels

Print label sets associated with metrics and instances. Labels are optional metric metadata described in detail in pmLookupLabels(3).

-m, --pmid

Print the PMID in terse mode.

-M, --fullpmid

Print the PMID in verbose mode.

-O time, --origin=time

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

-s, --series

Print time series identifiers associated with metrics, instances and sources. These unique identifiers are calculated from intrinsic (non-optional) labels and other metric metadata associated with each PMAPI context (sources), metrics and instances. Archive, local context or pmcd(1) connections for the same host all produce the same source identifier. See also pmLookupLabels(3) and the -l/--labels option.

-t, --oneline

Print the ``one line'' help summary, if available.

-T, --helptext

Print the help text, if available.

-v, --verify

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/--fetch, -l/--labels, -I/--fullindom, -M/--fullpmid, -m/--pmid, -t/--oneline and -T/--helptext.

-x, --events

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

FILES¶

$PCP_VAR_DIR/pmns/*

default local PMNS specification files

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).

SEE ALSO¶

PCPIntro(1), pmcd(1), pmchart(1), pmdumplog(1), pmprobe(1), pmrep(1), pmval(1), PMAPI(3), pmLookupLabels(3), pmLoadDerivedConfig(3), pmSpecLocalPMDA(3), pcp.conf(5), pcp.env(5) and pmns(5).