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Date: Mon, 7 Jan 2002 10:12:02 -0800 (PST)
From: Davide Libenzi <davidel@xmailserver.org>
X-X-Sender: davide@blue1.dev.mcafeelabs.com
To: Jens Axboe <axboe@suse.de>
cc: Mikael Pettersson <mikpe@csd.uu.se>, lkml <linux-kernel@vger.kernel.org>,
        <mjh@vr-web.de>, Linus Torvalds <torvalds@transmeta.com>
Subject: Re: [patch] 2.5.2 scheduler code for 2.4.18-pre1 ( was 2.5.2-pre
 performance degradation on an old 486 )
In-Reply-To: <20020107083331.C1755@suse.de>
Message-ID: <Pine.LNX.4.40.0201071011010.1612-100000@blue1.dev.mcafeelabs.com>
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On Mon, 7 Jan 2002, Jens Axboe wrote:

> 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??

I'll try today even if i think that one of the guy that had problems
pointed out it.




- Davide


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