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SubjectRe: [BENCHMARK] 2.5.59-mm7 with contest
Con Kolivas <conman@kolivas.net> wrote:
>
> On Saturday 01 Feb 2003 10:01 am, Andrew Morton wrote:
> > Con Kolivas wrote:
> > > ...
> > > io_load:
> > > Kernel [runs] Time CPU% Loads LCPU% Ratio
> > > 2.5.59 3 153 50.3 8 13.7 1.94
> > > 2.5.59-mm6 2 90 83.3 2 6.7 1.15
> > > 2.5.59-mm7 5 110 68.2 2 6.4 1.41
> > > read_load:
> > > Kernel [runs] Time CPU% Loads LCPU% Ratio
> > > 2.5.59 3 102 76.5 5 4.9 1.29
> > > 2.5.59-mm6 3 733 10.8 56 6.3 9.40
> > > 2.5.59-mm7 4 90 84.4 1 1.3 1.15
> >
> > The background loads took some punishment.
>
> Yes and I'd say a ratio of only 1.15 suggests kernel compilation got an unfair
> share of the resources.

A very important metric is system-wide idle/IO-wait CPU time. As long as
that is kept nice and low, we can then finetune the starvation and fairness
aspects.

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