[rrd-users] Re: Cpu usage %

Marek Dohojda marek.dohojda at linksys.com
Fri Mar 21 22:59:23 MET 2003

Hmmm moderator didn't like my quoting.

Ok the formula below didn't work.  I compilied a kernel and it showed no
usage, and yet top was showing over 20% usage of CPU.

here is my program (dirty just for testing, edited) to see the numbers and
they don't match..


a=`snmpget -v 2c -c ***** $IP .ssCpuRawSystem.0 | awk -F: '{print $2}'`
b=`snmpget -v 2c -c ***** $IP .ssCpuRawUser.0 | awk -F: '{print $2}'`
c=`snmpget -v 2c -c ***** $IP .ssCpuRawIdle.0 | awk -F: '{print $2}'`

d=$(($a + $b + $c))
echo "Idle time"
echo  $c / $d | bc -l
echo "user time"
echo  $b / $d | bc -l
echo "system time"
echo  $b / $d | bc -l

-----Original Message-----
From: Stephan Harren [mailto:sh at abovenet.de]
Sent: Friday, March 21, 2003 11:24 AM
To: Marek Dohojda
Subject: Re: [rrd-users] Re: Cpu usage %


Marek Dohojda schrieb:

>Am I wrong in assuming that if I do this math I will be correct?:
>	ssCpuRawSystem + ssCpuRawUser + ssCpuRawIdle = Total
>	then
>	(ssCpuRawSystem / Total) * 100 = % of System utilization 
>Is that correct?

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