how to find the cpu utilisation ratio in linux

[narasimha435]

how to find the cpu utilisation ratio in linux and unix

[alcazar]

Check out the /proc directory.This directory mostly consists of these system related info.There is one file called /proc/cpuinfo which gives physical parameters CPU info ,but thats not what you are looking for.

I am trying to find the answer to your question.

how to find the cpu utilisation ratio in linux and unix

[prn]

The command "w" (/bin/w in Solaris, /usr/bin/w in Linux -- at least Fedora) will give you that information.

The first line of the output should look like:
08:58:53 up 75 days, 18:04, 3 users, load average: 0.03, 0.07, 0.02
or
8:55am up 38 day(s), 1 user, load average: 1.28, 1.37, 1.29

Depending on what you plan to do with it, you may need to parse out specific information. For example, I run the following script every half hour on one of the Solaris boxes I am responsible for:

#! /bin/perl
use strict;
 
open IN, "/bin/w |" or die "could not run w to get load average: $!\n";
my $line  = <IN>;
close IN;
chomp $line;
 
my ($junk,$avgs) = split /load average: /,$line;
my ($min,$fivemin,$fifteenmin) = split /, /, $avgs;
print scalar localtime(), "\t$min\t$fivemin\t$fifteenmin\n";

(My crontab includes a redirection to append the data to a file.)

HTH,
Paul