From: Grant Grundler <grundler@parisc-linux.org>
To: "M. Grabert" <xam@cs.ucc.ie>
Cc: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] Re: 2.6.4-rc1-pa3 siimage/NS87415 IDE progess (and another mystery)!
Date: Mon, 12 Jul 2004 10:05:34 -0600 [thread overview]
Message-ID: <20040712160534.GA12046@colo.lackof.org> (raw)
In-Reply-To: <20040712033752.GA10163@sal.ucc.ie>
On Mon, Jul 12, 2004 at 04:37:52AM +0100, M. Grabert wrote:
> Tested above patch, but unfortunately it didn't work for me,
The rest of your post in fact suggests it did.
Ie you should no longer need to "sea" at the boot prompt.
> the NS87415 still doesn't use DMA (or so it seems, at least it's
> still the 3MB/s instead of the expected 30-40MB/s).
>
> hdparm -c /dev/hda showed DMA was turned on, and I even set it on
> again (hdparm -c 1), just to be sure, but it didn't make any
> difference in performance :(
This patch makes no attempt at changing existing DMA behaviors.
It's likely the NS87415 code needs to twiddle the "Prefetch Mode"
bits for something other than ATAPI (no prefetch) to get
better performance.
grant
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next prev parent reply other threads:[~2004-07-12 16:05 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-09 6:29 [parisc-linux] Results of (IDE) kernel tests with modified io.c M. Grabert
2004-03-09 6:36 ` Randolph Chung
2004-03-09 7:11 ` M. Grabert
2004-03-09 7:29 ` Randolph Chung
2004-03-09 15:26 ` [parisc-linux] 2.6.4-rc1-pa3 siimage/NS87415 IDE progess (and another mystery)! M. Grabert
2004-07-11 22:18 ` [parisc-linux] " Grant Grundler
2004-07-11 22:48 ` M. Grabert
2004-07-11 23:14 ` Randolph Chung
2004-07-11 23:34 ` Randolph Chung
2004-07-12 0:12 ` Grant Grundler
2004-07-12 3:37 ` M. Grabert
2004-07-12 4:19 ` M. Grabert
2004-07-12 16:14 ` Grant Grundler
2004-07-12 18:51 ` M. Grabert
2004-07-13 3:56 ` Grant Grundler
2004-07-13 5:59 ` Grant Grundler
2004-07-12 19:44 ` Alan Cox
2004-07-12 16:05 ` Grant Grundler [this message]
2004-07-12 18:39 ` M. Grabert
2004-07-12 18:50 ` Randolph Chung
2004-07-13 4:17 ` Grant Grundler
2004-07-11 23:34 ` Grant Grundler
2004-03-09 18:38 ` [parisc-linux] Results of (IDE) kernel tests with modified io.c Grant Grundler
2004-03-09 15:25 ` John David Anglin
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