CPU % usage of all pid

Question

I can't obtain CPU% usage of all the pid, without know any program names.

I feel I am close to the solution, this is what I've done so far:

for line in $(pgrep -f chrome); \
   do echo -n $line" - ";       \ 
   ps -p $line -o %cpu | sed -n 2p | sed 's/ //'; done

In this example I obtain only all chrome pid.. in next step I want all executing pid.

score 0 · Answer 1 · answered Feb 26 '14 at 16:52

0

You can do this easily with the top command alone.

To order by CPU percentage (descending), you could use top -o -cpu

answered Feb 26 '14 at 16:52

ktm5124

I guess OP knows about this command. – maverik Feb 26 '14 at 16:53
There's no basis for this assumption. He didn't mention it once. – ktm5124 Feb 26 '14 at 16:55

Reinstate Monica Please · Answer 2 · 2014-02-26T17:50:04.760

If you don't want to use top for some reason, couple of other ways I can think of doing this.

> ps -e -o "%p-%C"

Or if you wanted to do it in a script, something like (alternatively could just parse ps again or check /proc/pid/stat for cpu usage)

#!/bin/bash
shopt -s extglob
for line in /proc/+([0-9]); do
  echo -n "${line##*/}- "
  ps -p "${line##*/}" -o %cpu | sed -n 2p | sed 's/ //'
done

Where

2 Answers2