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Date: Fri, 16 Aug 2002 13:40:44 -0300 (BRT)
From: Rik van Riel <riel@conectiva.com.br>
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To: Jean-Luc Coulon <jean-luc.coulon@wanadoo.fr>
cc: linux-kernel@vger.kernel.org
Subject: Re: 2.4.20-pre2-ac3 stops responding
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Message-ID: <Pine.LNX.4.44L.0208161340000.1430-100000@imladris.surriel.com>
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On Fri, 16 Aug 2002, Jean-Luc Coulon wrote:
> Rik van Riel wrote:
> > On Fri, 16 Aug 2002, Jean-Luc Coulon wrote:
> >
> > > 2nd while running:
> > > ------------------
> > > If I have high disk activity, the system stops responding for a while,
> > > it does not accepts any key action nor mouse movement. It starts running
> > > normally after few seconds.
> >
> > I've got a patch that might help improve this situation:
> >
> > http://surriel.com/patches/2.4/2.4.20-p2ac3-rmap14
>
> I've applied the patch, it does not improve the things.
> The problem seems to be related with a DMA :

> /dev/hda2:
> setting using_dma to 1 (on)
> HDIO_SET_DMA failed: Invalid argument
> using_dma    =  0 (off)

Heh indeed.  There's no way to make your system fast if the
CPU is tied up waiting for the disk all the time ;)

regards,

Rik
-- 
Bravely reimplemented by the knights who say "NIH".

http://www.surriel.com/		http://distro.conectiva.com/

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