[rrd-users] Re: Using RRDTool & SNMP to graph CPU usage

[Graeme Donaldson]

Hugo van der Kooij said:
> On Wed, 12 Nov 2003, Graeme Donaldson wrote:
>
>> I'm trying to figure out how to graph CPU usage percentages with
>> RRDTool.
>> I'd like to separately graph User, Nice, System and Idle percentages.  I
>> think I know which OIDs to monitor (ssCpuRawUser.0, ssCpuRawNice.0,
>> etc),
>> but I'm not sure what they represent and how to calculate usage
>> percentages from them.
>
> Like the ones on:
> http://hvdkooij.xs4all.nl/stats-dag.cms
>
> The scripts and such are on:
> http://hvdkooij.xs4all.nl/stats/
>
> Hugo.

Hi again

I've managed to get it working quite nicely.  The only thing that concerns
me is that CPU usage sometimes jumps over 100%.  Surely that can't happen?

See example at http://toxicbunny.net/~graeme/cpu-day.png

Graeme.

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