How to extract CPU load of cores from htop command?

Question

I have found that htop command was the only way to display nicely each CPU core's load. I need an average of each CPU core from the last few seconds. However, I do not know how to extract those numbers in a command line. For example, using grep or -n 1. I am running Ångström where I am not allowed to install any more extra packages.

I would like my end result to be:

CPU0: X% CPU1: X%

I would appreciate any help.

Possible duplicate of How to get overall CPU Usage (e.g. 57%) on Linux — rm-vanda
– rm-vanda, Commented May 5, 2017 at 15:04
I found the answer in this link where it calculates accurate cpu given in percentage. — Curious
– Curious, Commented May 9, 2017 at 14:35

JNevill · Accepted Answer · 2017-05-05 16:25:03Z

1

Instead of htop which is more of a gui, go straight to /proc/stat and grab what you need.

Using awk:

awk '$1~/cpu[0-9]/{usage=($2+$4)*100/($2+$4+$5); print $1": "usage"%"}' /proc/stat

answered May 5, 2017 at 16:25

JNevill

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4 Comments

Curious Over a year ago

Unfortunately, it calculates the average since last reboot. I need an average of the last few seconds. How would I go about it?

jmarceli Over a year ago

/proc/stat info for anyone who is interested linuxhowtos.org/System/procstat.htm

Jongwook Choi Over a year ago

Does not use htop.

JNevill Over a year ago

@JongwookChoi That was not a requirement from OP. If that is a requirement for you, then it would be prudent to open a new question and note that limitation.

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