view multi-core or mlti-cpu utlization on linux

Question

I have a program running on Linux and I need to determine how it is utilizing all the CPUs/cores. Is there any program for viewing this information?

score 44 · Answer 1 · answered May 05 '11 at 14:23

44

Run the 'top' command and press '1' to see the individual cores.

answered May 05 '11 at 14:23

Reto Aebersold

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great! But how can I save the command result into a file periodically by running a script? You know, you can't press a key in a script. Is there any 'top' option available to turn on this feature? – snowfox May 18 '12 at 08:47
@snowfox: you can press W (capitalized) when running `top` to save the current state. – Ynhockey Dec 30 '15 at 09:32

score 41 · Accepted Answer · answered May 05 '11 at 14:27

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When runnging the top command, press f then j to display the P column (last CPU used by process), in addition to the 1 command in top, you should view some multi core occupation informations :)

answered May 05 '11 at 14:27

Cédric Julien

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score 18 · Answer 3 · answered May 05 '11 at 14:35

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htop shows you the cpu usage of each core in a graphical manner (ncurses).

answered May 05 '11 at 14:35

Stefan Endrullis

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score 4 · Answer 4 · answered Aug 20 '13 at 23:12

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mpstat -P ALL 5 5 >>your.file

You may need to parse this to use it for a presentation, or sum it But read the man page as mpstat has some useful options.

answered Aug 20 '13 at 23:12

Ralph Byrd

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score 4 · Answer 5 · answered Jun 06 '14 at 07:38

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Run the 'top' command and press '1' to see the individual core is the best way to see the cpu cores usage .. another option is run cmd- cat /proc/stat to see the cpu cores usage

answered Jun 06 '14 at 07:38

Atul Singh Rajpoot

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view multi-core or mlti-cpu utlization on linux

5 Answers5

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