Re: Disk Performance

Rik van Riel (riel@conectiva.com.br)
Fri, 9 Nov 2001 20:57:07 -0200 (BRST)

On Fri, 9 Nov 2001, Erik Andersen wrote:
> On Fri Nov 09, 2001 at 08:31:32PM -0200, Rik van Riel wrote:
> > On Fri, 9 Nov 2001, Ben Israel wrote:
> >
> > > Why does my 40 Megabyte per second IDE drive, transfer files at best
> > > at 1-2 Megabytes per second?

> > # hdparm -d1 /dev/hda
> >
> > (not enabled by default because it corrupts data with some
> > old chipsets and/or disks)
>
> But wouldn't it make more sense to enable DMA by default, except
> for a set of blacklisted chipsets, rather then disabling it for
> everybody just because some older chipsets are crap?

The kernel does this, but only if CONFIG_IDEDMA_AUTO
is enabled ...

regards,

Rik

-- 
DMCA, SSSCA, W3C?  Who cares?  http://thefreeworld.net/


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


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/