1PCP(1) General Commands Manual PCP(1)
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6 pcp, pcp-summary - run a command or summarize an installation
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9 pcp [pcp options...] pcp-command [command options...]
10 pcp [-LPV?] [-a archive] [-h host] [-O origin] [-n pmnsfile]
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13 The pcp command is used in one of two modes. By default, it summarizes
14 the Performance Co-Pilot (PCP) installation on the local host. This
15 mode can also be used to summarize the installation from a remote host,
16 or a historical installation from a set of PCP archives. This mode
17 indirectly invokes the pcp-summary command (in the absence of any other
18 requested command).
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20 Alternatively, a command can be passed to pcp to run, again possibly in
21 the context of a remote host or set of historical archives.
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24 When pcp is invoked with a command to run, it will search for the named
25 command in $PCP_BINADM_DIR and also $HOME/.pcp/bin (these are usually
26 scripts, and are installed with a "pcp-" prefix). This mode of opera‐
27 tion allows system performance tools to be implemented using PMAPI(3)
28 services, while still preserving all of their usual command line
29 options. These options are thus (indirectly) augmented with the stan‐
30 dard PCP option set, as described in PCPIntro(1).
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32 This provides a convenient mechanism for obtaining retrospective or
33 remote monitoring capabilities while preserving the behaviour of the
34 system tools.
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36 For example, the pcp-free(1) utility can be invoked as follows, for
37 recorded data from host munch:
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39 $ pcp -a $PCP_LOG_DIR/pmlogger/munch/20140317 -O 11:35:50am free -m
40 total used free shared buffers cached
41 Mem: 23960 14554 9406 0 176 2137
42 -/+ buffers/cache: 12240 11720
43 Swap 12047 0 12047
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45 A complete list of the available and installed tools is provided along
46 with the pcp(1) usage message, but some examples include: pcp-free(1),
47 pcp-uptime(1) and pcp-numastat(1).
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50 The summary report includes: the OS version, a summary of the hardware
51 inventory, the local timezone, the PCP software version, the state of
52 the pmcd(1) process and associated Performance Metrics Domain Agents
53 (PMDAs), as well as information about any PCP archive loggers (pmlog‐
54 ger(1)) and PCP inference engines (pmie(1)) that are running.
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56 All of the displayed values are performance metric values and further
57 information for each can be obtained using the command:
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59 $ pminfo -dtT metric
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61 The complete set of metrics required by pcp to produce its output is
62 contained in $PCP_VAR_DIR/config/pmlogconf/tools/pcp-summary.
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65 With no arguments, pcp reports on the local host, however the following
66 options are accepted:
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68 -a archive, --archive=archive
69 Report the PCP configuration as described in the set of PCP ar‐
70 chive logs, archive, which is a comma-separated list of names,
71 each of which may be the base name of an archive or the name of a
72 directory containing one or more archives.
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74 -h host, --host=host
75 Report the PCP configuration on host rather than the local host.
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77 -L, --local-PMDA
78 Use a local context to collect metrics from DSO PMDAs on the local
79 host without PMCD.
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81 -n pmnsfile, --namespace=pmnsfile
82 Load an alternative Performance Metrics Name Space (PMNS(5)) from
83 the file pmnsfile.
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85 -O origin, --origin=origin
86 When reporting archived metrics, start reporting at origin within
87 the time window.
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89 -P, --pmie
90 Display pmie(1) performance information - counts of rules evaluat‐
91 ing to true, false, or indeterminate, as well as the expected rate
92 of rule calculation, for each pmie process running on the default
93 host. Refer to the individual metric help text for full details
94 on these values.
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96 -V, --version
97 Display version number and exit.
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99 -?, --help
100 Display usage message and exit.
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103 pcp will terminate with an exit status of 1 if pmcd on the target host
104 could not be reached or the set of archives could not be opened, or 2
105 for any other error.
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108 $HOME/.pcp/bin
109 Per-user location for command scripts.
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111 $PCP_BINADM_DIR
112 System location for installed command scripts.
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114 $PCP_VAR_DIR/config/pmlogconf/tools/pcp-summary
115 pmlogconf(1) configuration file for collecting all of the metrics
116 required by pcp
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119 Environment variables with the prefix PCP_ are used to parameterize the
120 file and directory names used by PCP. On each installation, the file
121 /etc/pcp.conf contains the local values for these variables. The
122 $PCP_CONF variable may be used to specify an alternative configuration
123 file, as described in pcp.conf(5).
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125 For environment variables affecting PCP tools, see pmGetOptions(3).
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128 PCPIntro(1), pcp-free(1), pcp-numastat(1), pcp-python(1), pcp-
129 uptime(1), pcp-verify(1), pmcd(1), pmie(1), pmlogconf(1), pmlogger(1),
130 pcp.conf(5), pcp.env(5) and PMNS(5).
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134Performance Co-Pilot PCP PCP(1)