Re: 2.4.20-pre2-ac3 stops responding

[Rik van Riel]

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
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