smaps is an useful file to inspect the memory footprint of the process in linux.
It shows the memory mapping entries of a given process.
This tool simply parses 4 values and sums up the memory used from the same file:
- Private Clean
- Private Dirty
- Shared Clean
- Shared Dirty
- Use with a process name (automatically get the first pid by
pidof)
$> sudo python parse_smaps.py -p sshd
There are multiple pids:
[0] 83568: sshd: vagrant@pts/6
[1] 83566: sshd: vagrant [priv]
[2] 360: sshd: /usr/bin/sshd -D [listener] 0 of 10-100 startups
Choose which one process you want (default=0):
======================================================================
Private + Private + Shared + Shared
Clean + Dirty + Clean + Dirty = Total : library
======================================================================
0 kB + 0 kB + 1364 kB + 184 kB = 1548 kB : libcrypto.so.1.1
0 kB + 8 kB + 1380 kB + 16 kB = 1404 kB : libc-2.31.so
0 kB + 4 kB + 640 kB + 12 kB = 656 kB : sshd
0 kB + 436 kB + 0 kB + 136 kB = 572 kB : [heap]
0 kB + 4 kB + 184 kB + 12 kB = 200 kB : libnss_systemd.so.2
0 kB + 32 kB + 0 kB + 68 kB = 100 kB : [anonymous]
0 kB + 4 kB + 64 kB + 20 kB = 88 kB : pam_systemd.so
0 kB + 4 kB + 80 kB + 4 kB = 88 kB : libpthread-2.31.so
24 kB + 0 kB + 56 kB + 8 kB = 88 kB : libz.so.1.2.11
0 kB + 0 kB + 0 kB + 68 kB = 68 kB : libkrb5.so.3.3
0 kB + 0 kB + 48 kB + 8 kB = 56 kB : libpam.so.0.84.2
0 kB + 4 kB + 40 kB + 4 kB = 48 kB : ld-2.31.so
0 kB + 0 kB + 36 kB + 8 kB = 44 kB : pam_unix.so
0 kB + 0 kB + 36 kB + 8 kB = 44 kB : libnss_files-2.31.so
0 kB + 4 kB + 36 kB + 4 kB = 44 kB : libaudit.so.1.0.0
0 kB + 36 kB + 0 kB + 4 kB = 40 kB : [stack]
...
===============================================================================
24 kB + 536 kB + 4012 kB + 800 kB = 5372 kB : Total
- Use with a specified smaps file
$> sudo python parse_smaps.py /proc/83581/smaps
======================================================================
Private + Private + Shared + Shared
Clean + Dirty + Clean + Dirty = Total : library
======================================================================
0 kB + 24 kB + 1528 kB + 0 kB = 1552 kB : libc-2.31.so
4 kB + 52 kB + 544 kB + 0 kB = 600 kB : tmux
0 kB + 0 kB + 400 kB + 0 kB = 400 kB : locale-archive
32 kB + 12 kB + 252 kB + 0 kB = 296 kB : libevent-2.1.so.7.0.0
0 kB + 228 kB + 0 kB + 0 kB = 228 kB : [heap]
0 kB + 24 kB + 156 kB + 0 kB = 180 kB : libncursesw.so.6.2
0 kB + 8 kB + 168 kB + 0 kB = 176 kB : ld-2.31.so
0 kB + 8 kB + 92 kB + 0 kB = 100 kB : libpthread-2.31.so
0 kB + 8 kB + 72 kB + 0 kB = 80 kB : libresolv-2.31.so
0 kB + 52 kB + 0 kB + 0 kB = 52 kB : [anonymous]
0 kB + 32 kB + 0 kB + 0 kB = 32 kB : [stack]
0 kB + 8 kB + 8 kB + 0 kB = 16 kB : libutempter.so.1.2.0
0 kB + 8 kB + 8 kB + 0 kB = 16 kB : libutil-2.31.so
0 kB + 0 kB + 4 kB + 0 kB = 4 kB : [vdso]
0 kB + 0 kB + 0 kB + 0 kB = 0 kB : [vvar]
0 kB + 0 kB + 0 kB + 0 kB = 0 kB : [vsyscall]
======================================================================
36 kB + 464 kB + 3232 kB + 0 kB = 3732 kB : Total