From: Jens Axboe <axboe@suse.de>
To: Kurt Garloff <garloff@suse.de>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] speed up SATA
Date: Tue, 30 Mar 2004 13:40:39 +0200 [thread overview]
Message-ID: <20040330114038.GT24370@suse.de> (raw)
In-Reply-To: <20040330081301.GA3820@tpkurt.garloff.de>
On Tue, Mar 30 2004, Kurt Garloff wrote:
> On Mon, Mar 29, 2004 at 03:08:50PM +0200, Jens Axboe wrote:
> > Indeed, it would be best to keep the read-ahead window at least a
> > multiple of the max read size. So you don't get the nasty effects of
> > having a 128k read-ahead window, but device with 255 sector limit
> > resulting in 124KB + 4KB read.
>
> Any work underway to implement this?
It would be a few lines of code to implement this - see the other patch
I just sent. You just need to adjust backing_dev_info.ra_pages based on
->max_sectors, if you use the current kernels.
--
Jens Axboe
next prev parent reply other threads:[~2004-03-30 11:40 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-27 22:37 [PATCH] speed up SATA Jeff Garzik
2004-03-27 23:04 ` Stefan Smietanowski
2004-03-27 23:11 ` Jeff Garzik
2004-03-28 7:23 ` Stefan Smietanowski
2004-03-28 15:37 ` Bartlomiej Zolnierkiewicz
2004-03-27 23:32 ` Bartlomiej Zolnierkiewicz
2004-03-27 23:36 ` Jeff Garzik
2004-03-27 23:40 ` Jeff Garzik
2004-03-28 0:13 ` Bartlomiej Zolnierkiewicz
2004-03-28 0:08 ` Jeff Garzik
2004-03-29 11:42 ` Pavel Machek
2004-03-27 23:37 ` Nick Piggin
2004-03-27 23:44 ` Jeff Garzik
2004-03-27 23:47 ` Nick Piggin
2004-03-27 23:59 ` Jeff Garzik
2004-03-28 14:10 ` Jens Axboe
2004-03-28 17:31 ` Jeff Garzik
2004-03-28 17:35 ` Jens Axboe
2004-03-28 17:48 ` Jeff Garzik
2004-03-28 17:54 ` Jens Axboe
2004-03-28 18:08 ` Jamie Lokier
2004-03-28 18:15 ` Jens Axboe
2004-03-28 18:55 ` Jeff Garzik
2004-03-29 8:09 ` Jens Axboe
2004-03-29 12:41 ` Jamie Lokier
2004-03-29 12:44 ` Jens Axboe
2004-03-29 12:50 ` Jamie Lokier
2004-03-29 13:05 ` Arjan van de Ven
2004-03-29 13:08 ` Jens Axboe
2004-03-30 8:13 ` Kurt Garloff
2004-03-30 11:40 ` Jens Axboe [this message]
2004-03-29 17:19 ` Craig I. Hagan
2004-03-29 18:19 ` Jeff Garzik
2004-03-28 19:06 ` Jeff Garzik
2004-03-28 18:12 ` William Lee Irwin III
2004-03-28 18:17 ` Jens Axboe
2004-03-28 18:30 ` Bartlomiej Zolnierkiewicz
2004-03-28 18:30 ` Jens Axboe
2004-03-28 18:45 ` Bartlomiej Zolnierkiewicz
2004-03-28 18:59 ` Jeff Garzik
2004-03-28 20:32 ` Andrew Morton
2004-03-28 20:45 ` Jeff Garzik
2004-03-29 0:55 ` Andrea Arcangeli
2004-03-29 4:02 ` Jeff Garzik
2004-03-29 13:04 ` Andrea Arcangeli
2004-03-29 19:45 ` Jeff Garzik
2004-03-30 11:09 ` Jens Axboe
2004-03-30 15:54 ` Timothy Miller
2004-03-30 16:20 ` Jeff Garzik
2004-03-30 18:05 ` Timothy Miller
2004-03-30 17:50 ` Jeff Garzik
2004-03-30 18:19 ` Timothy Miller
2004-03-29 4:29 ` Wim Coekaerts
2004-03-29 7:32 ` Denis Vlasenko
2004-03-29 8:13 ` Jens Axboe
2004-03-29 13:05 ` Andrea Arcangeli
2004-03-29 4:31 ` William Lee Irwin III
2004-03-29 4:57 ` Jeff Garzik
2004-03-28 19:52 ` Nuno Silva
2004-03-28 20:02 ` Jeff Garzik
2004-03-28 0:06 ` Jeff Garzik
2004-03-28 0:15 ` Nick Piggin
2004-03-28 0:49 ` Jeff Garzik
2004-03-28 1:02 ` Andrew Morton
2004-03-28 1:09 ` Jeff Garzik
2004-03-28 13:59 ` Jens Axboe
2004-03-28 17:29 ` Jeff Garzik
2004-03-28 17:31 ` Jens Axboe
2004-03-28 13:51 ` Jamie Lokier
2004-03-28 17:24 ` Jeff Garzik
2004-03-28 17:36 ` Jamie Lokier
2004-03-28 17:54 ` Jeff Garzik
2004-03-28 20:50 ` Eric D. Mudama
2004-04-02 10:11 ` Jeremy Higdon
2004-04-02 16:11 ` Jamie Lokier
2004-04-03 10:48 ` Jeremy Higdon
2004-04-03 13:49 ` Jamie Lokier
2004-03-28 17:40 ` Jens Axboe
2004-03-28 17:49 ` Jeff Garzik
2004-03-28 17:55 ` Jens Axboe
2004-03-28 18:04 ` Jeff Garzik
2004-03-28 18:09 ` Jens Axboe
2004-03-28 20:12 ` Jeff Garzik
2004-03-28 20:54 ` Eric D. Mudama
2004-03-28 7:32 ` Stefan Smietanowski
2004-03-28 20:25 ` Jeff Garzik
2004-03-28 21:16 ` Stefan Smietanowski
2004-03-28 21:26 ` Jeff Garzik
2004-03-28 14:08 ` Jens Axboe
2004-03-28 17:38 ` Jeff Garzik
2004-03-28 17:45 ` Jens Axboe
2004-03-28 20:21 ` Jeff Garzik
2004-03-28 0:07 ` Andrew Morton
2004-03-28 0:21 ` Nick Piggin
2004-03-28 4:40 ` Eric D. Mudama
2004-03-28 6:56 ` Nick Piggin
2004-03-28 20:33 ` Eric D. Mudama
2004-03-28 20:59 ` Eric D. Mudama
2004-03-29 1:30 ` Nick Piggin
2004-03-29 5:24 ` Eric D. Mudama
2004-03-29 13:03 ` Jamie Lokier
2004-03-29 11:36 ` Pavel Machek
2004-03-29 18:46 ` David Lang
2004-03-29 20:13 ` Jeff Garzik
2004-03-30 5:55 ` Eric D. Mudama
2004-03-30 11:54 ` Marc Bevand
2004-03-30 13:07 ` Jens Axboe
2004-03-30 13:48 ` Marc Bevand
2004-03-30 13:49 ` Jens Axboe
2004-03-30 15:31 ` Jeff Garzik
2004-03-30 17:42 ` Jeff Garzik
2004-03-31 9:12 ` Marc Bevand
2004-03-30 12:16 ` Marc Bevand
-- strict thread matches above, loose matches on Subject: below --
2004-03-31 5:47 Marcus Hartig
2004-03-31 6:56 ` Jeff Garzik
2004-03-31 16:07 ` Marcus Hartig
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