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SubjectRe: [BENCHMARK] 2.5.44-mm6 contest results
Jens Axboe wrote:
>
> On Mon, Oct 28 2002, Andrew Morton wrote:
> > Con Kolivas wrote:
> > >
> > > io_load:
> > > Kernel [runs] Time CPU% Loads LCPU% Ratio
> > > 2.5.44 [3] 873.8 9 69 12 12.24
> > > 2.5.44-mm1 [3] 347.3 22 35 15 4.86
> > > 2.5.44-mm2 [3] 294.2 28 19 10 4.12
> > > 2.5.44-mm4 [3] 358.7 23 25 10 5.02
> > > 2.5.44-mm5 [4] 270.7 29 18 11 3.79
> > > 2.5.44-mm6 [3] 284.1 28 20 10 3.98
> >
> > Jens, I think I prefer fifo_batch=16. We do need to expose
> > these in /somewhere so people can fiddle with them.
>
> I was hoping someone else would do comprehensive disk benchmarks with
> fifo_batch=32 and fifo_batch=16, but I guess that you have to currently
> change the define in the source doesn't make that very likely. I don't
> really like your global settings (for per-queue entities), but I guess
> they can suffice until a better approach is done.

Oh sure; it's just a hack so we can experiment with it. Not that
anyone has, to my knowledge.

> I'll do some benching today.

Wouldn't hurt, but it's a complex problem. Another approach would
be to quietly change it and see who squeaks ;)
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