proc_pid_statm(5)

NAME#

/proc/pid/statm - memory usage information

DESCRIPTION#

/proc/pid/statm

Provides information about memory usage, measured in pages. The columns are:

bash

size       (1) total program size
\n
           (same as VmSize in \n/proc/\npid\n/status\n)
resident   (2) resident set size
\n
           (inaccurate; same as VmRSS in \n/proc/\npid\n/status\n)
shared     (3) number of resident shared pages
\n
           (i.e., backed by a file)
\n
           (inaccurate; same as RssFile+RssShmem in
\n
           \n/proc/\npid\n/status\n)
text       (4) text (code)
lib        (5) library (unused since Linux 2.6; always 0)
data       (6) data + stack
dt         (7) dirty pages (unused since Linux 2.6; always 0)

Some of these values are inaccurate because of a kernel-internal scalability optimization. If accurate values are required, use /proc/pid/smaps or /proc/pid/smaps_rollup instead, which are much slower but provide accurate, detailed information.

SEE ALSO#

proc(5), proc_pid_status(5)