1. What is ps_mem?
ps_mem is a tool that can be used to show how much memory is used per program. It does this by calculating the sum of private RAM for program processes and the sum of shared RAM for program processes.
2. How to install ps_mem
In order to install ps_mem, you will need to be running CentOS 6.5 (this package became available with CentOS 6.5). ps_mem is installed with a single package:
yum install ps_mem
3. How to use ps_mem
ps_mem with sample output:
# ps_mem Private + Shared = RAM used Program 4.0 KiB + 32.5 KiB = 36.5 KiB mysqld_safe 4.0 KiB + 36.0 KiB = 40.0 KiB screen 4.0 KiB + 42.0 KiB = 46.0 KiB xinetd 0.0 KiB + 53.5 KiB = 53.5 KiB udevd (2) 80.0 KiB + 31.5 KiB = 111.5 KiB rpcbind 24.0 KiB + 105.0 KiB = 129.0 KiB mingetty (6) 152.0 KiB + 101.0 KiB = 253.0 KiB master 212.0 KiB + 50.5 KiB = 262.5 KiB auditd 180.0 KiB + 120.0 KiB = 300.0 KiB qmgr 256.0 KiB + 54.0 KiB = 310.0 KiB init 356.0 KiB + 27.0 KiB = 383.0 KiB dhclient 264.0 KiB + 359.5 KiB = 623.5 KiB smbd (2) 352.0 KiB + 291.5 KiB = 643.5 KiB sshd (2) 652.0 KiB + 91.5 KiB = 743.5 KiB crond 1.1 MiB + 64.5 KiB = 1.2 MiB rsyslogd 1.4 MiB + 624.0 KiB = 2.0 MiB pickup 2.6 MiB + 111.0 KiB = 2.7 MiB zsh (2) 3.3 MiB + 103.0 KiB = 3.4 MiB mysqld 6.8 MiB + 8.6 MiB = 15.4 MiB httpd (9) --------------------------------- 28.6 MiB =================================
To show the command line of each program:
# ps_mem -s
To refresh program memory usage every X seconds:
# ps_mem -w X
