Vignaud Jean-Baptiste (jbv@club-internet.fr)
Mon, 15 Mar 1999 09:30:49 +0100
I'v compiled 2.2.3 and applied the patched patch for SX164 UDMA found on
ftp://ftp.alphalinux.org and it seems to work.
The patch is not in full sync with 2.2.3 but applies with some offsets.
The only problem is that on my two disks doesn't have the same behaviour:
before the patch (stock 2.1.132)
hda: 1.5Mo/s
hdc: 1.5Mo/s
After the patch (2.2.3 + UDMA Patch + SX164 Patch) added bootarg idebus=33
hda: 3.58o/s
hdc: 7.6Mo/s
This i with no call to hdparm
That's better, but maybe someone can tell me the best hdparm parameters to
use.
Jean-Baptiste
> On Wed, 3 Mar 1999, Andreas Krebs wrote:
>
> > > The patch is now distributed in the beta ide-udma driver for 2.2.x
> > > (http://www.dyer.vanderbilt.edu/server/udma/) and it gives me
> ~6MB/s vs.
> > > ~1.5MB/s (hdparm -t) on my 164sx. Integer performance on a
> pc164sx/533
> > > should be about the same as a pII/350 (floating point much higher on
> > > anything but linux).
> >
> > i get ~8MB/s with my patch and an IBM DTTA (hdparm -t) and ~9MB/s using
> > time dd if reading through the file system (ext2).
>
> Anyone tried this patch with 2.2.2-ac6? Plain 2.2.2-ac6 compiles fine, but
> IDE patch breaks it in some way (didn't have time to look into it a bit
> more or try plain 2.2.2 with IDE patch yet).
>
> D.
>
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