Hi,
All 16 core show always %idle greater than 95% (mpstat -P ALL).
So can I assume there is no CPU constraint in this box?
Thank you!
On Sat, Feb 9, 2013 at 4:37 PM, Stephen Harris <lists@xxxxxxxxxx> wrote:
> On Sat, Feb 09, 2013 at 04:24:19PM -0200, Carlos Henrique Reimer wrote:
> > processors. vmstat r column "run queue" usually indicates values higher
> > than 2 and less than 5 but "Load Average" values from top, sar -q and
> other
> > commands show always values less than 1.
> >
> > Should not these values be higher than 16 on a box with 16 processors to
> > confirm a CPU constraint?
>
> If you have single-threaded processes then that process could chew up 100%
> of a single core but not be able to run any faster. The load average
> would only be 1.
>
> Load average is a poor measure; look at %idle on each core. If you see
> one core with 0% idle then something is maxed out.
>
> --
>
> rgds
> Stephen
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--
Reimer
47-3347-1724 47-9183-0547 msn: carlos.reimer@xxxxxxxxxxxxx
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