pmdadenki - Man Page

metrics related to the systems electrical consumption


$PCP_PMDAS_DIR/denki/pmdadenki [-d domain] [-l logfile]


pmdadenki is a Performance Metrics Domain Agent (PMDA) which extracts electricity related performance metrics.

Currently, metrics from RAPL (on Intel cpus) and battery charge values are available, if supported by the hardware.

-l Location of the log file.  By default, a log file named denki.log is written in the current directory of pmcd(1) when pmdadenki is started, i.e. $PCP_LOG_DIR/pmcd. If the log file cannot be created or is not writable, output is written to the standard error instead.


The denki PMDA is installed and available by default on Linux. If you want to undo the installation, do the following as root:

# cd $PCP_PMDAS_DIR/denki
# ./Remove

If you want to establish access to the names, help text and values for the denki metrics once more, after removal, do the following as root:

# cd $PCP_PMDAS_DIR/denki
# ./Install

pmdadenki 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 pmdadenki


default help text file for the denki metrics


installation script for the pmdadenki agent


undo installation script for the pmdadenki agent


default log file for error messages and other information from pmdadenki

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), denki/READMEfile pcp.conf(5) and pcp.env(5).


PCP Performance Co-Pilot