[mrtg] CPU Utilization in %

Matthew Petach mpetach at yahoo.com
Fri Jan 9 03:04:08 CET 2009

I'll let someone else explain why, but I graph CPU for all
our routers, and I set the MaxBytes to 800, and then
everything just works like you'd expect.


From: Nilesh Sutar <sutar.nilesh at gmail.com>
To: Tobi Oetiker <mrtg at lists.oetiker.ch>
Sent: Thursday, January 8, 2009 6:06:46 AM
Subject: [mrtg] CPU Utilization in %

Hi Sir,
           I have configured mrtg-rrd for individual cpu utilization. using snmp.I have mibs for snmp ,give output in bytes.
i used multiple target for each cpu in % and providing value in bytes but in graphs system cpu shows correct graph scale and reading. but for usr cpu and nice cpu ,graph shows  
Max  In:	 67.2 % (8.4%)		Average  In:	 40.6 % (5.1%)		Current  In:	 39.1 % (4.9%)
Max  Out:	 67.2 % (8.4%)		Average  Out:	 40.6 % (5.1%)		Current  Out:	 39.1 % (4.9%)
like this .then i cross checked this value by hiting top command then value in bracket ( %) is perfect. but why value wrotes before bracket and how it comes ???. I am providing value in bytes to each target then how it is converted in % 

here is cfg file:
Target[localhost.cpu] :442545 (#comes by  snmpwalk)
ShortLegend[localhost.cpu]: %
MaxBytes[localhost.cpu]: 100
Title[localhost.cpu]: System CPU
PageTop[localhost.cpu]: <H1>Percentage of System CPU Load %</H1>
Target[localhost.nicecpu] :0
ShortLegend[localhost.nicecpu]: %
MaxBytes[localhost.nicecpu]: 100
Title[localhost.nicecpu]: Nice CPU
PageTop[localhost.nicecpu]: <H1>Percentage of Nice CPU Load %</H1>
Target[localhost.usrcpu] :758208
ShortLegend[localhost.usrcpu]: %
MaxBytes[localhost.usrcpu]: 100
Title[localhost.usrcpu]: User CPU
PageTop[localhost.usrcpu]: <H1>Percentage of User CPU Load %</H1>
Legend1[localhost.cpu]: Active CPU in % (Load)
LegendI[localhost.cpu]:  Active
Options[localhost.cpu]: growright,gauge,nopercent

I think i am doing in wrong way !!!
Nilesh Sutar.

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