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.
How to install ps_mem on CentOS 6.5/6.6/7
Enter following command to install ps_mem:
# yum install ps_mem -y
How to use ps_mem
Enter “ps_mem” in your console:
root@rashob ~]# ps_mem
Private + Shared = RAM used Program
64.0 KiB + 10.0 KiB = 74.0 KiB qmail-clean
80.0 KiB + 3.0 KiB = 83.0 KiB closeinput
76.0 KiB + 10.0 KiB = 86.0 KiB svscan
84.0 KiB + 10.0 KiB = 94.0 KiB qmail-rspawn
92.0 KiB + 9.0 KiB = 101.0 KiB qmail-lspawn
152.0 KiB + 16.5 KiB = 168.5 KiB qmail-send
200.0 KiB + 23.0 KiB = 223.0 KiB mysqld_safe
188.0 KiB + 43.5 KiB = 231.5 KiB atd
256.0 KiB + 39.0 KiB = 295.0 KiB dbus-daemon
268.0 KiB + 35.0 KiB = 303.0 KiB xinetd
276.0 KiB + 56.5 KiB = 332.5 KiB auditd
340.0 KiB + 30.0 KiB = 370.0 KiB init
340.0 KiB + 38.0 KiB = 378.0 KiB udevd
340.0 KiB + 69.0 KiB = 409.0 KiB mingetty (6)
..............................................
8.6 MiB + 67.0 KiB = 8.6 MiB named
7.4 MiB + 3.0 MiB = 10.4 MiB nginx (6)
39.0 MiB + 4.8 MiB = 43.8 MiB php (3)
41.3 MiB + 7.0 MiB = 48.3 MiB php-cgi (2)
19.0 MiB + 31.2 MiB = 50.2 MiB httpd (5)
102.9 MiB + 96.5 KiB = 103.0 MiB mysqld
---------------------------------
304.6 MiB
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To show the command line of each program:
# ps_mem -s
To refresh the program memory usage every X seconds:
# ps_mem -w X