NAME¶
pcp-free - report on free and used memory in the system
SYNOPSIS¶
pcp-free [
-bkmgoltV] [
-c count] [
-s
interval]
DESCRIPTION¶
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 the
kernel.
When invoked via the
pcp(1) command, the
-h/
--host,
-a/
--archive,
-O/
--origin,
-s/
--samples,
-t/
--interval,
-Z/
--timezone and several other options become indirectly
available.
Options¶
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
iterations.
The
-l switch shows detailed low and high memory statistics.
The current version of
pcp-free can be queried using the
-V/
--version option.
NOTES¶
pcp-free is inspired by the
free(1) command and aims to be command
line and output compatible with it.
The shared memory column should be ignored; it is obsolete.
SEE ALSO¶
pcp(1),
free(1), PCPIntro(1),
pmParseInterval(1) and
environ(5).