Looking for a script/program/util that can give me stats of CPU usage for a user

MaRiOsGR · 10-19-2011, 03:03 AM

Hello,

I'm looking to find a way to get CPU usage stats with percentage for a single user in a linux server.

I do not want a monitoring script, just to setup the script/util to watch a username and give me every 24 hours a percentage of CPU usage.

thank you.

utsuprainfra · 10-19-2011, 03:32 AM

so

top -b -n 1 -u username | awk 'NR>7 { sum += $9; } END { print sum; }'

maybe with a cron?

or, from the same link you probably saw:

munin-monitoring org?

MaRiOsGR · 10-19-2011, 06:25 AM

utsuprainfra thank you very much for the reply.

top -b -n 1 -u username | awk 'NR>7 { sum += $9; } END { print sum; }'
gives me the load in the exact moment that I run the command,
how can I make it monitor the user and give me the average on 24 hours?

chrism01 · 10-20-2011, 01:10 AM

You simply run that as often as you think reqd eg every hour and save the results, then calc avg after 24 hrs.

utsuprainfra · 10-20-2011, 07:15 AM

chrism01 makes a good suggestion. run it every 10 seconds if you want.

*though top used to suck resources, unsure if it is significant enough draw to throw results in "modernity" (today).

MaRiOsGR · 10-20-2011, 07:17 AM

thats a good idea.
is there any automatic way to calculate the average? (that I could add it in the script?)

utsuprainfra · 10-20-2011, 07:42 AM

give me 3 instances of output. i'm on a windows machine right now and can't boot into linux...

MaRiOsGR · 10-20-2011, 08:11 AM

[root@ /]# top -b -n 1 -u e*******p | awk 'NR>7 { sum += $9; } END { print sum; }'
128.5
[root@ /]# top -b -n 1 -u e*******p | awk 'NR>7 { sum += $9; } END { print sum; }'
149.3
[root@ /]# top -b -n 1 -u e*******p | awk 'NR>7 { sum += $9; } END { print sum; }'
87.5

MaRiOsGR · 10-20-2011, 11:24 AM

ok I got it, I just send the result to a text file top -b -n 1 -u username | awk 'NR>7 { sum += $9; } END { print sum; }' ? test.txt

and then run awk '{ total += $1; count++ } END { print total/count }' test.txt

MaRiOsGR · 10-20-2011, 11:43 AM

but now a new question came up...
top -b -n 1 -u username | awk 'NR>7 { sum += $9; } END { print sum; }' >> test.txt

works fine but in some occassions the cpu usage is 0
so the content of the file is like:

0
25
0
0
85

etc etc , can can I make it NOT count the zeros ? for example run the command top -b -n 1 -u username | awk 'NR>7 { sum += $9; } END { print sum; }' and if the result is 0 then not run >> test.txt , if it is any other number then procced to >> test.txt