Re: [patch] 2.5.2 scheduler code for 2.4.18-pre1 ( was 2.5.2-pre performance degradation on an old 486 )
Jens Axboe (axboe@suse.de)
Mon, 7 Jan 2002 08:33:31 +0100
On Sun, Jan 06 2002, Davide Libenzi wrote:
> On Mon, 7 Jan 2002, Mikael Pettersson wrote:
>
> > On Sun, 6 Jan 2002 15:59:05 -0800 (PST), Davide Libenzi wrote:
> > >I made this patch for Andrea and it's the scheduler code for 2.4.18-pre1
> > >Could someone give it a try on old 486s
> >
> > Done. On my '93 vintage 486, 2.4.18p1 + your scheduler results in very
> > bursty I/O and poor performance, just like I reported for 2.5.2-pre7.
>
> Can you try some changes that i'll tell you ?
Did you _try_ the ISA bounce trick to reproduce locally??
--
Jens Axboe
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