Re: [BENCHMARK] 2.5.46-mm1 with contest

From: Robert Love (rml@tech9.net)
Date: Thu Nov 07 2002 - 19:04:08 EST


On Thu, 2002-11-07 at 18:58, Andrew Morton wrote:

> Robert Love wrote:
> >
> > On Thu, 2002-11-07 at 17:53, Con Kolivas wrote:
> >
> > > io_load:
> > > Kernel [runs] Time CPU% Loads LCPU% Ratio
> > > 2.5.44-mm6 [3] 284.1 28 20 10 3.98
> > > 2.5.46 [1] 600.5 13 48 12 8.41
> > > 2.5.46-mm1 [5] 134.3 58 6 8 1.88
> > >
> > > Big change here. IO load is usually the one we feel the most.
> >
> > Nice.
>
> Mysterious.

Why? We are preempting during the generic file write/read routines, I
bet, which can otherwise be long periods of latency. CPU is up and I
bet the throughput is down, but his test is getting the attention it
wants.

        Robert Love

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