check_cpu_usage plugin?

[ffwqe efwa]

Andy,

I was under the impression that load was more indicative on process-wait for
cpu cycles and general system performance than actual cpu usage.  For
example, heavy processor wait on disk IO could cause high load without
actually consuming CPU usage, amongst other things.  Am I incorrect?

If I can rely on check_load to return .50 in a 5 minute average if 50% of
the cpu is used for five minute straight this should work for me needs.  My
gut feeling tells me it never quite works this way.  Additionally, can't a
momentary amount of high load (greater than 1.0 or 100% cpu) cause a number
above 1/100% to be averaged in and cause these measurements to be off?

Although it could be nice to monitor cpus individually in a multi-cpu system
for hung processes, etc, I can live without this if check_load works nicely.

Thanks!


On 3/29/07, Andy Shellam <andy.shellam-lists at mailnetwork.co.uk> wrote:
>
> That's exactly what the load average is - it shows how busy the
> processor is/has been over the last 1 minute, 5 minutes and 15 minutes.
>
> http://en.wikipedia.org/wiki/Load_(computing)
>
> Andy.
>
>
> ffwqe efwa wrote:
> >
> > Simple question -- is there a plugin or easy method to check for
> > processor usage over either a 1 minute or 5 minute average on linux
> > machines?  There's a check_load plugin, but I can't find anything that
> > would easily function as a check_cpu plugin.
> > !DSPAM:37,460c269a103001795015003!
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