CentOS 7.0 - man page for pmdasummary (centos section 1)
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pmdasummary - summary performance metrics domain agent (PMDA)
$PCP_PMDAS_DIR/summary/pmdasummary [-d domain] [-h helpfile] [-l logfile] [-U username]
pmdasummary is a Performance Metrics Domain Agent (PMDA) which derives performance metrics
values from values made available by other PMDAs. pmdasummary consists of two processes:
The inference engine for performance values pmie(1) is used to periodically sample
values for the base metrics and compute the derived values. This process is
launched with the given pmie-command-line arguments by the main process, described
The main process reads and buffers the values computed by pmie(1) and makes them
available to the performance metrics collector daemon pmcd(1).
A brief description of the pmdasummary command line options follows:
-d It is absolutely crucial that the performance metrics domain number specified here is
unique and consistent. That is, domain should be different for every PMDA on the one
host, and the same domain number should be used for the same PMDA on all hosts.
-h This option specifies an alternative help text file helpfile for describing the met-
rics that pmdasummary represents.
-l Location of the log file. By default, a log file named summary.log is written in the
current directory of pmcd(1) when pmdasummary is started, i.e. $PCP_LOG_DIR/pmcd.
If the log file cannot be created or is not writable, output is written to the stan-
dard error instead.
-U User account under which to run the agent. The default is the unprivileged "pcp"
account in current versions of PCP, but in older versions the superuser account
("root") was used by default.
If you want access to the names, help text and values for the summary performance metrics,
do the following as root:
# cd $PCP_PMDAS_DIR/summary
If you want to undo the installation, do the following as root:
# cd $PCP_PMDAS_DIR/summary
pmdasummary is launched by pmcd(1) and should never be executed directly. The Install and
Remove scripts notify pmcd(1) when the agent is installed or removed.
command line options used to launch pmdasummary
default pmie(1) expressions defining the summary metrics
default help text for the summary metrics
installation script for the pmdasummary agent
undo installation script for the pmdasummary agent
default log file for error messages and other information from pmdasummary
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 config-
uration file, as described in pcp.conf(5).
pmcd(1) and pmie(1).
Performance Co-Pilot PCP PMDASUMMARY(1)
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