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SubjectRe: [BENCHMARK] 2.5.61-mm1 +/- as or cfq with contest
Jens Axboe <axboe@suse.de> wrote:
>
> On Sun, Feb 16 2003, Con Kolivas wrote:
> > On Sun, 16 Feb 2003 08:51 pm, Jens Axboe wrote:
> > > On Sun, Feb 16 2003, Con Kolivas wrote:
> > > > Here are contest (http://contest.kolivas.org) results with osdl
> > > > (http://www.osdl.org) hardware for 2.5.61-mm1 with either the as i/o
> > > > scheduler or the cfq scheduler.
> > > >
> > > > io_load:
> > > > Kernel [runs] Time CPU% Loads LCPU% Ratio
> > > > 2.5.60-mm1 3 112 67.0 15.7 7.1 1.42
> > > > 2.5.61 2 143 52.4 32.9 13.3 1.81
> > > > 2.5.61-mm1 2 634 12.5 257.3 24.6 7.83
> > > > 2.5.61-mm1cfq 3 397 19.6 123.3 18.1 5.03
> > >
> > > These loo fishy, could be some other interaction. I'm consistently
> > > beating 2.5.60-mm1/2.5.61 on io_load here, but that is 2.5.61 base and
> > > not 2.5.61-mm1 base. Could be something odd happening there.
> >
> > I dont think they're fishy - taken in the mm1 context -. I have tested cfq3a
> > without mm1 and it does beat the baseline. See a previous email I posted with
> > it.
>
> I didn't mean that you have done something fishy, but that there's a
> fishy interaction between -mm + CFQ :)
>

It is the CPU scheduler patch. Con has eariler shown that this patch shoots
io_load in the head. 2.5.60-mm1 did not have that patch.
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