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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | COMMAND MODE | SUMMARY MODE | SUMMARY MODE OPTIONS | DIAGNOSTICS | FILES | PCP ENVIRONMENT | SEE ALSO | COLOPHON |
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PCP(1) General Commands Manual PCP(1)
pcp, pcp-summary - run a command or summarize an installation
pcp [pcp options...] pcp-command [command options...]
pcp [-LPV?] [-a archive] [-h host] [-O origin] [-n pmnsfile]
The pcp command is used in one of two modes. By default, it
summarizes the Performance Co-Pilot (PCP) installation on the
local host. This mode can also be used to summarize the
installation from a remote host, or a historical installation
from a set of PCP archives. This mode indirectly invokes the
pcp-summary command (in the absence of any other requested
command).
Alternatively, a command can be passed to pcp to run, again
possibly in the context of a remote host or set of historical
archives.
When pcp is invoked with a command to run, it will search for the
named command in $PCP_BINADM_DIR and also $HOME/.pcp/bin (these
are usually scripts, and are installed with a "pcp-" prefix).
This mode of operation allows system performance tools to be
implemented using PMAPI(3) services, while still preserving all
of their usual command line options. These options are thus
(indirectly) augmented with the standard PCP option set, as
described in PCPIntro(1).
This provides a convenient mechanism for obtaining retrospective
or remote monitoring capabilities while preserving the behaviour
of the system tools.
For example, the pcp-free(1) utility can be invoked as follows,
for recorded data from host munch:
$ pcp -a $PCP_LOG_DIR/pmlogger/munch/20140317 -O 11:35:50am free -m
total used free shared buffers cached
Mem: 23960 14554 9406 0 176 2137
-/+ buffers/cache: 12240 11720
Swap 12047 0 12047
A complete list of the available and installed tools is provided
along with the pcp(1) usage message, but some examples include:
pcp-free(1), pcp-uptime(1) and pcp-numastat(1).
The summary report includes: the OS version, a summary of the
hardware inventory, the local timezone, the PCP software version,
the state of the pmcd(1) process and associated Performance
Metrics Domain Agents (PMDAs), as well as information about any
PCP archivers (pmlogger(1)) and PCP inference engines (pmie(1))
that are running.
All of the displayed values are performance metric values and
further information for each can be obtained using the command:
$ pminfo -dtT metric
The complete set of metrics required by pcp to produce its output
is contained in $PCP_VAR_DIR/config/pmlogconf/tools/pcp-summary.
With no arguments, pcp reports on the local host, however the
following options are accepted:
-a archive, --archive=archive
Report the PCP configuration as described in the set of PCP
archives, archive, which 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.
-h host, --host=host
Report the PCP configuration on host rather than the local
host.
-L, --local-PMDA
Use a local context to collect metrics from DSO PMDAs on the
local host without PMCD.
-n pmnsfile, --namespace=pmnsfile
Load an alternative Performance Metrics Name Space (PMNS(5))
from the file pmnsfile.
-O origin, --origin=origin
When reporting archived metrics, start reporting at origin
within the time window.
-P, --pmie
Display pmie(1) performance information - counts of rules
evaluating to true, false, or indeterminate, as well as the
expected rate of rule calculation, for each pmie process
running on the default host. Refer to the individual metric
help text for full details on these values.
-V, --version
Display version number and exit.
-?, --help
Display usage message and exit.
pcp will terminate with an exit status of 1 if pmcd on the target
host could not be reached or the set of archives could not be
opened, or 2 for any other error.
$HOME/.pcp/bin
Per-user location for command scripts.
$PCP_BINADM_DIR
System location for installed command scripts.
$PCP_VAR_DIR/config/pmlogconf/tools/pcp-summary
pmlogconf(1) configuration file for collecting all of the
metrics required by pcp
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).
For environment variables affecting PCP tools, see
pmGetOptions(3).
PCPIntro(1), pcp-free(1), pcp-numastat(1), pcp-python(1),
pcp-uptime(1), pcp-verify(1), pmcd(1), pmie(1), pmlogconf(1),
pmlogger(1), pcp.conf(5), pcp.env(5) and PMNS(5).
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 protected]. This page was obtained from the
project's upstream Git repository
⟨https://github.com/performancecopilot/pcp.git⟩ on 2024-06-14.
(At that time, the date of the most recent commit that was found
in the repository was 2024-06-14.) 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
[email protected]
Performance Co-Pilot PCP PCP(1)
Pages that refer to this page: pcp(1), pcp2arrow(1), pcp2elasticsearch(1), pcp2graphite(1), pcp2influxdb(1), pcp2json(1), pcp2openmetrics(1), pcp2spark(1), pcp2template(1), pcp2xlsx(1), pcp2xml(1), pcp2zabbix(1), pcp-atop(1), pcp-atopsar(1), pcpcompat(1), pcp-dmcache(1), pcp-dstat(1), pcp-free(1), pcpintro(1), pcp-iostat(1), pcp-ipcs(1), pcp-meminfo(1), pcp-mpstat(1), pcp-netstat(1), pcp-numastat(1), pcp-pidstat(1), pcp-ps(1), pcp-python(1), pcp-shping(1), pcp-slabinfo(1), pcp-ss(1), pcp-tapestat(1), pcp-uptime(1), pcp-verify(1), pcp-zoneinfo(1), pmgetopt(1), pmpython(1), pmrep(1), pmstat(1), pmview(1), pcp-atoprc(5)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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