From: David Balazic <david.balazic@uni-mb.si>
To: andre@linux-ide.org
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: scsi vs ide performance on fsync's
Date: Wed, 07 Mar 2001 13:47:41 +0100 [thread overview]
Message-ID: <3AA62DED.A4F6A1B6@uni-mb.si> (raw)
Andre Hedrick (andre@linux-ide.org) wrote on Wed Mar 07 2001 - 01:58:44 EST :
> On Wed, 7 Mar 2001, Jonathan Morton wrote:
[ snip ]
> > >Since all OSes that enable WC at init will flush
> > >it at shutdown and do a periodic purge with in-activity.
> >
> > But Linux doesn't, as has been pointed out earlier. We need to fix Linux.
>
> Friend I have fixed this some time ago but it is bundled with TASKFILE
> that is not going to arrive until 2.5. Because I need a way to execute
> this and hold the driver until it is complete, regardless of the shutdown
> method.
I don't understand 100%.
Is TASKFILE required to do proper write cache flushing ?
> > >Err, last time I check all good devices flush their write caching on their
> > >own to take advantage of having a maximum cache for prefetching.
> >
> > Which doesn't work if the buffer is filled up by the OS 0.5 seconds before
> > the power goes.
>
> Maybe that is why there is a vender disk-cache dump zone on the edge of
> the platters...just maybe you need to buy your drives from somebody that
> does this and has a predictive sector stretcher as the energy from the
> inertia by the DC three-phase motor executes the dump.
So where is a list of drives that do this ?
www.list-of-hardware-that-doesnt-suck.com is not responding ...
> Ever wondered why modern drives have open collectors on the databuss?
no :-)
--
David Balazic
--------------
"Be excellent to each other." - Bill & Ted
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next reply other threads:[~2001-03-07 12:49 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-07 12:47 David Balazic [this message]
[not found] <1epyyz1.etswlv1kmicnqM%smurf@noris.de>
2001-03-09 6:59 ` scsi vs ide performance on fsync's 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 --
2001-03-06 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
2001-03-06 5:27 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
2001-03-06 13:03 ` dean gaudet
2001-03-06 13:15 ` dean gaudet
2001-03-06 13:45 ` Jonathan Morton
[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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