CPU usage of particular processes

Shell Programming and Scripting
1

How can i determine the CPU usage of particular processes like mysqld,httpd etc. using shell script?

2

on bash ...

ps -aecv | grep "your app" | awk '{print $11}'
3

But it doesn't show the cumulative cpu usage of a application?

4

It shows the cpu usage at a time in percent

5 
[root@mypbxadmin ~]# ps aecv
  PID TTY      STAT   TIME  MAJFL   TRS   DRS   RSS %MEM COMMAND
 2954 pts/0    R+     0:00      0    74  8289   696  0.0 ps
 6003 tty1     Ss+    0:00      0    10  3781   492  0.0 mingetty
 6004 tty2     Ss+    0:00      0    10  3781   492  0.0 mingetty
 6005 tty3     Ss+    0:00      0    10  3781   492  0.0 mingetty
 6006 tty4     Ss+    0:00      0    10  3781   488  0.0 mingetty
 6007 tty5     Ss+    0:00      0    10  3781   492  0.0 mingetty
 6009 tty6     Ss+    0:00      0    10  3781   492  0.0 mingetty
18939 pts/0    Ss     0:00      0   710 65385  1540  0.0 bash
19106 pts/0    S      0:00      0   710 10221  1492  0.0 bash

[root@mypbxadmin ~]# ps -C openser
  PID TTY          TIME CMD
 6059 ?        00:00:00 openser
 6089 ?        00:00:31 openser
 6091 ?        00:00:31 openser
 6093 ?        00:00:30 openser
 6094 ?        00:00:31 openser
 6096 ?        00:00:30 openser
 6098 ?        00:00:31 openser
 6100 ?        00:00:30 openser
 6102 ?        00:00:30 openser
 6104 ?        00:00:07 openser
 6106 ?        00:00:00 openser
 6108 ?        00:00:00 openser
 6110 ?        00:00:00 openser
 6112 ?        00:00:00 openser
 6114 ?        00:00:00 openser
 6116 ?        00:00:00 openser
 6118 ?        00:00:00 openser
 6120 ?        00:00:00 openser
 6122 ?        00:00:00 openser
 6126 ?        00:00:00 openser

[root@mypbxadmin ~]# ps aecv | grep "openser" | awk '{print $11}'
No output
6

NOT

ps aecv

BUT

ps -aecv
7

use command below

prstat

BR

8

@protocomm

[root@wiki ~]# ps -aecv |grep "mysql"| awk '{print $11}'
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.7/FAQ