From: Jens Axboe <axboe@suse.de>
To: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: "Prakash K. Cheemplavam" <prakashkc@gmx.de>,
Jeff Garzik <jgarzik@pobox.com>,
marcush@onlinehome.de, linux-kernel@vger.kernel.org
Subject: Re: Silicon Image 3112A SATA trouble
Date: Sun, 30 Nov 2003 17:25:23 +0100 [thread overview]
Message-ID: <20031130162523.GV10679@suse.de> (raw)
In-Reply-To: <200311301721.41812.bzolnier@elka.pw.edu.pl>
On Sun, Nov 30 2003, Bartlomiej Zolnierkiewicz wrote:
>
> I read it _very_ closely, here is your original mail with subject
> "Re: 2.6.0-test9 /-mm3 SATA siimage - bad disk performance":
>
> On Saturday 15 of November 2003 10:11, Prakash K. Cheemplavam wrote:
> > Marcus Hartig wrote:
> > > Hello all,
> > >
> > > with the Fedora 1 kernel 2.4.22-1.2115.nptl I get with hdparm -t
> > > (Timing buffered disk reads) 34 MB/sec. Its very slow for this drive.
> > >
> > > With 2.6.0-test9 and -mm3 I get around "62 MB in 3.05 = 20,31". Wow"
> > > Back to ~1998?
> >
> > I have a similar problem: With 2.4.22-ac3 I had 37mb/sec with my Samsung
> > HD and 49MB/sec with IBM/Hitachi, now with 2.6 (all I tried, including
> ^^^^^^^^^^^^
> > test9-mm2) I had only 20mb/sec for Samsung and about 39mb/sec for the
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > IBM. Motherboard is Abit NF7-S Rev2.0, as well, so same situation with
> ^^^^
> > the siimage 1.06 driver. I wanted to run some dd tests as well, but it
> > is a real performance hit. Playing with readahead or other hdparm
> > options didn't help either.
> >
> > Prakash
>
> In 2.6.x there is no max_kb_per_request setting in /proc/ide/hdx/settings.
> Therefore
> echo "max_kb_per_request:128" > /proc/ide/hde/settings
> does not work.
>
> Hmm. actually I was under influence that we have generic ioctls in 2.6.x,
> but I can find only BLKSECTGET, BLKSECTSET was somehow lost. Jens?
Probably because it's very dangerous to expose, echo something too big
and watch your data disappear.
--
Jens Axboe
next prev parent reply other threads:[~2003-11-30 16:25 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-25 13:59 Silicon Image 3112A SATA trouble Prakash K. Cheemplavam
2003-11-29 15:39 ` Prakash K. Cheemplavam
2003-11-29 16:38 ` Julien Oster
2003-11-29 16:54 ` Jeff Garzik
2003-11-29 17:07 ` Craig Bradney
2003-11-30 1:51 ` Prakash K. Cheemplavam
2003-11-29 16:56 ` Jeff Garzik
2003-11-29 17:41 ` Miquel van Smoorenburg
2003-11-29 18:39 ` Jeff Garzik
2003-11-29 20:24 ` Marcus Hartig
2003-11-30 2:00 ` Prakash K. Cheemplavam
2003-11-30 14:47 ` Bartlomiej Zolnierkiewicz
2003-11-30 15:52 ` Prakash K. Cheemplavam
2003-11-30 16:21 ` Bartlomiej Zolnierkiewicz
2003-11-30 16:25 ` Jens Axboe [this message]
2003-11-30 16:41 ` Jeff Garzik
2003-11-30 16:51 ` Jens Axboe
2003-11-30 16:58 ` Bartlomiej Zolnierkiewicz
2003-11-30 17:06 ` Jeff Garzik
2003-11-30 17:10 ` Jens Axboe
2003-11-30 17:22 ` Jeff Garzik
2003-11-30 17:31 ` Jens Axboe
2003-11-30 17:48 ` Jeff Garzik
2003-11-30 17:56 ` Vojtech Pavlik
2003-11-30 18:17 ` Jens Axboe
2003-11-30 18:19 ` Jeff Garzik
2003-11-30 18:22 ` Jens Axboe
2003-11-30 18:31 ` Jeff Garzik
2003-11-30 19:44 ` Vojtech Pavlik
2003-11-30 21:05 ` Yaroslav Klyukin
2003-11-30 17:08 ` Jens Axboe
2003-11-30 17:13 ` Bartlomiej Zolnierkiewicz
2003-11-30 17:13 ` Jens Axboe
2003-11-30 17:18 ` Jeff Garzik
2003-11-30 17:28 ` Jens Axboe
2003-11-30 17:41 ` Jeff Garzik
2003-11-30 17:45 ` Jens Axboe
2003-11-30 17:57 ` Jeff Garzik
2003-11-30 18:21 ` Jens Axboe
2003-11-30 19:04 ` Jeff Garzik
2003-11-30 19:39 ` Jens Axboe
2003-11-30 20:35 ` Jeff Garzik
2003-12-01 9:02 ` Jens Axboe
2003-11-30 17:19 ` Prakash K. Cheemplavam
2003-11-30 18:07 ` Bartlomiej Zolnierkiewicz
2003-11-30 21:34 ` Prakash K. Cheemplavam
2003-11-30 16:27 ` Jeff Garzik
2003-11-30 16:34 ` Bartlomiej Zolnierkiewicz
[not found] <Pine.LNX.4.44.0311291453550.838-100000@coffee.psychology.mcmaster.ca>
2003-11-30 16:45 ` Jeff Garzik
2003-11-30 17:52 Luis Miguel García
2003-11-30 17:13 ` Craig Bradney
2003-11-30 18:27 ` Jeff Garzik
2003-11-30 18:41 Luis Miguel García
2003-11-30 21:15 ` Craig Bradney
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