CODEWITHSUNDEEP
linuxprocess
Niet the Dark Absol
Niet the Dark Absol

Reputation: 324600

Calculating total processor time used

I can get how long the server has been running through uptime, but is there any way to get the total amount of processor time spent on all processes combined?

I can do this on my Windows desktop by subtracting the System Idle Process time from the uptime, but is there any similar method in Linux?

Upvotes: 3

Views: 433

Answers (1)

coder543
coder543

Reputation: 801

Look into the /proc/stat file. It should contain the idle CPU numbers you're looking for, so with a little math you'll be able to calculate how long the CPU has been idle.

EDIT: Also, here's an example of how to get the percentage from any Linux terminal:

head -n 1 /proc/stat | awk '{ print "\n"; printf (($2+$3+$4+$7+$8+$9)/($2+$3+$4+$5+$6+$7+$8+$9))*100; print "% of the time since the computer was booted has been spent doing work." }'

I think I've got it handling all of the columns correctly there.

Upvotes: 2

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