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proc_pid_statm(5) File Formats Manual 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:

size       (1) total program size

(same as VmSize in /proc/pid/status) resident (2) resident set size
(inaccurate; same as VmRSS in /proc/pid/status) shared (3) number of resident shared pages
(i.e., backed by a file)
(inaccurate; same as RssFile+RssShmem in
/proc/pid/status) 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)

2024-05-02 Linux man-pages (unreleased)