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From: Jonathan Morton <chromi@cyberspace.org>
To: Linus Torvalds <torvalds@transmeta.com>,
	Douglas Gilbert <dougg@torque.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: scsi vs ide performance on fsync's
Date: Tue, 6 Mar 2001 06:43:05 +0000	[thread overview]
Message-ID: <l03130308b6ca353ffb51@[192.168.239.101]> (raw)
In-Reply-To: <Pine.LNX.4.10.10103052136580.1011-100000@penguin.transmeta.com>
In-Reply-To: <3AA47557.1DC03D6@torque.net>

>I don't know if there is any way to turn of a write buffer on an IDE disk.

hdparm has an option of this nature, but it makes no difference (as I
reported).  It's worth noting that even turning off UDMA to the disk on my
machine doesn't help the situation - although it does slow things down a
little, it's not "slow enough" to indicate that the drive is behaving
properly.  Might be worth running the test on some of my other machines,
with their diverse collection of IDE controllers (mostly non-UDMA) and
disks.

>Of course, whether you should even trust the harddisk is another question.

I think this result in itself would lead me *not* to trust the hard disk,
especially an IDE one.  Has anybody tried running this test with a recent
IBM DeskStar - one of the ones that is the same mech as the equivalent
UltraStar but with IDE controller?  I only have SCSI and laptop IBMs here -
all my desktop IDE drives are Seagate.  However I do have one SCSI Seagate,
which might be worth firing up for the occasion...

--------------------------------------------------------------
from:     Jonathan "Chromatix" Morton
mail:     chromi@cyberspace.org  (not for attachments)
big-mail: chromatix@penguinpowered.com
uni-mail: j.d.morton@lancaster.ac.uk

The key to knowledge is not to rely on people to teach you it.

Get VNC Server for Macintosh from http://www.chromatix.uklinux.net/vnc/

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  parent reply	other threads:[~2001-03-06  6:47 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-03-06  5:27 scsi vs ide performance on fsync's Douglas Gilbert
2001-03-06  5:45 ` Linus Torvalds
2001-03-06  7:12   ` Andre Hedrick
2001-03-06 12:09     ` Alan Cox
2001-03-06 18:44       ` Linus Torvalds
2001-03-07 13:48         ` Stephen C. Tweedie
2001-03-07 14:13           ` Jens Axboe
2001-03-12 18:50           ` Andre Hedrick
2001-03-06 13:50     ` Mike Black
2001-03-06 16:02       ` Jeremy Hansen
2001-03-07 18:27         ` Jeremy Hansen
2001-03-07 18:36           ` Linus Torvalds
2001-03-08 11:06             ` Stephen C. Tweedie
2001-03-06 16:57       ` Jonathan Morton
2001-03-06  6:43 ` Jonathan Morton [this message]
2001-03-06 13:03   ` dean gaudet
2001-03-06 13:15     ` dean gaudet
2001-03-06 13:45     ` Jonathan Morton
     [not found] <1epyyz1.etswlv1kmicnqM%smurf@noris.de>
2001-03-09  6:59 ` Matthias Urlichs
2001-03-09 11:51   ` Jens Axboe
2001-03-09 14:26     ` Matthias Urlichs
  -- strict thread matches above, loose matches on Subject: below --
2001-03-07 12:47 David Balazic
2001-03-06 19:42 David Balazic
2001-03-06 20:37 ` Jens Axboe
2001-03-07 13:51   ` Stephen C. Tweedie
2001-03-07 14:12     ` Jens Axboe
2001-03-07 15:05       ` Stephen C. Tweedie
2001-03-07 18:51         ` Jens Axboe
2001-03-07 19:10           ` Stephen C. Tweedie
2001-03-07 20:15             ` Jens Axboe
2001-03-07 20:56               ` Stephen C. Tweedie
2001-03-07 20:59                 ` Jens Axboe
2001-03-08 15:45                 ` Chris Mason
2001-03-06 17:14 David Balazic
2001-03-06 17:46 ` Gregory Maxwell
2001-03-06 18:23 ` Jonathan Morton
2001-03-06 23:27   ` Mark Hahn
     [not found] <Pine.LNX.4.33L2.0103021033190.6176-200000@srv2.ecropolis.com>
     [not found] ` <054201c0a33d$55ee5870$e1de11cc@csihq.com>
2001-03-04 20:10   ` Douglas Gilbert
2001-03-04 21:28     ` Ishikawa
2001-03-06  0:11     ` Douglas Gilbert
2001-03-02 17:42 Jeremy Hansen
2001-03-02 18:39 ` Steve Lord
2001-03-02 19:17   ` Chris Mason
2001-03-02 19:25     ` Steve Lord
2001-03-02 19:27       ` Jeremy Hansen
2001-03-02 19:38       ` Chris Mason
2001-03-02 19:41         ` Steve Lord
2001-03-05 13:23         ` Andi Kleen
2001-03-02 19:25     ` Andre Hedrick
2001-03-03  1:55     ` Dan Hollis
2001-03-02 20:56 ` Linus Torvalds
2001-03-06  2:13   ` Jeremy Hansen
2001-03-06  2:25     ` Linus Torvalds
2001-03-06  3:30     ` Jonathan Morton
2001-03-06  4:05       ` Linus Torvalds
2001-03-06  7:03       ` Andre Hedrick
2001-03-06  8:24       ` Jonathan Morton
2001-03-06 12:22         ` Rik van Riel
2001-03-06 14:08         ` Jonathan Morton
2001-03-07 16:50           ` Pavel Machek
2001-03-06 19:41         ` Andre Hedrick
2001-03-07  5:25         ` Jonathan Morton
2001-03-07  6:58           ` Andre Hedrick
2001-03-09 11:39       ` Jonathan Morton

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