pcp-free gives a summary display of the total amount of free and used
physical memory and swap in the system, as well as the caches used by
When invoked via the pcp(1) command, the -h/--host, -a/--archive,
-O/--origin, -s/--samples, -t/--interval, -Z/--timezone and several
other pcp options become indirectly available.
The -b/--bytes switch displays the amount of memory in bytes; the
-k/--kilobytes switch (set by default) displays it in kilobytes; the
-m/--megabytes switch displays it in megabytes.
The -t/--total switch displays a line containing the totals.
The -o switch disables the display of a "buffer adjusted" line. If
the -o option is not specified, free subtracts buffer memory from the
used memory and adds it to the free memory reported.
The -s/--interval switch activates continuous polling delay seconds
apart. You may specify any floating point number for delay, or
indeed any valid pmParseInterval(3) specification, which includes
microsecond resolution delay times. This can be used in conjunction
with the -c/--samples option to terminate the display after count
The -l switch shows detailed low and high memory statistics.
The current version of pcp-free can be queried using the -V/--version
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
firstname.lastname@example.org. This page was obtained from the project's upstream
Git repository ⟨git://git.pcp.io/pcp⟩ on 2017-03-13. 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
Performance Co-Pilot PCP PCP-FREE(1)