From: Mike Fedyk <mfedyk@matchmail.com>
To: Chris Mason <mason@suse.com>
Cc: Tom Vier <tmv@comcast.net>, Reiserfs List <reiserfs-list@namesys.com>
Subject: Re: write barrier patches for 2.4.21
Date: Thu, 28 Aug 2003 10:07:25 -0700 [thread overview]
Message-ID: <20030828170725.GB21352@matchmail.com> (raw)
In-Reply-To: <1062031059.5324.111.camel@tiny.suse.com>
On Wed, Aug 27, 2003 at 08:37:40PM -0400, Chris Mason wrote:
> scsi drives don't really need them because most scsi drives don't have
> write back caching on by default, and most actually listen when you turn
> the cache off. The scsi tag queuing makes good performance possible
> even without writeback caching.
So, in essence, TCQ is exposing what is happening in the cache, and allowing
control/showing state compared to IDE's non-TCQ write cache. Do I have that
right?
next prev parent reply other threads:[~2003-08-28 17:07 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-25 17:08 write barrier patches for 2.4.21 Gergely Tamas
2003-08-26 8:17 ` Oleg Drokin
2003-08-26 9:03 ` Gergely Tamas
2003-08-26 9:13 ` Oleg Drokin
2003-08-26 9:32 ` Gergely Tamas
2003-08-26 21:46 ` Tom Vier
2003-08-27 6:41 ` Oleg Drokin
2003-08-27 22:03 ` Tom Vier
2003-08-28 0:37 ` Chris Mason
2003-08-28 17:07 ` Mike Fedyk [this message]
2003-08-29 0:07 ` Tom Vier
2003-08-29 1:18 ` Mike Fedyk
2003-08-29 1:44 ` Chris Mason
2003-08-29 1:56 ` Matthias Andree
2003-09-02 22:10 ` Hans Reiser
2003-09-04 14:56 ` Oleg Drokin
-- strict thread matches above, loose matches on Subject: below --
2003-09-04 20:49 Tom Vier
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