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From: Valdis.Kletnieks@vt.edu
To: Pavel Machek <pavel@ucw.cz>
Cc: Daniel Phillips <phillips@google.com>,
David Chinner <dgc@sgi.com>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
Theodore Tso <tytso@mit.edu>, Al Boldi <a1426z@gawab.com>,
Valerie Henson <val.henson@gmail.com>,
Rik van Riel <riel@redhat.com>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [Patch] document ext3 requirements (was Re: [RFD] Incremental fsck)
Date: Wed, 16 Jan 2008 07:20:36 -0500 [thread overview]
Message-ID: <16153.1200486036@turing-police.cc.vt.edu> (raw)
In-Reply-To: Your message of "Wed, 16 Jan 2008 12:51:44 +0100." <20080116115144.GE22460@elf.ucw.cz>
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On Wed, 16 Jan 2008 12:51:44 +0100, Pavel Machek said:
> I guess I should try to measure it. (Linux already does writeback
> caching, with 2GB of memory. I wonder how important disks's 2MB of
> cache can be).
It serves essentially the same purpose as the 'async' option in /etc/exports
(i.e. we declare it "done" when the other end of the wire says it's caught
the data, not when it's actually committed), with similar latency wins. Of
course, it's impedance-matching for bursty traffic - the 2M doesn't do much
at all if you're streaming data to it. For what it's worth, the 80G Seagate
drive in my laptop claims it has 8M, so it probably does 4 times as much
good as 2M. ;)
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next prev parent reply other threads:[~2008-01-16 12:22 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-08 21:22 [RFD] Incremental fsck Al Boldi
2008-01-08 21:31 ` Alan
2008-01-09 9:16 ` Andreas Dilger
2008-01-12 23:55 ` Daniel Phillips
2008-01-08 21:41 ` Rik van Riel
2008-01-09 4:40 ` Al Boldi
2008-01-09 7:45 ` Valerie Henson
2008-01-09 11:52 ` Al Boldi
2008-01-09 14:44 ` Rik van Riel
2008-01-10 13:26 ` Al Boldi
2008-01-12 14:51 ` Theodore Tso
2008-01-13 11:05 ` Al Boldi
2008-01-13 17:19 ` Pavel Machek
2008-01-13 17:41 ` Alan Cox
2008-01-15 20:16 ` [Patch] document ext3 requirements (was Re: [RFD] Incremental fsck) Pavel Machek
2008-01-15 21:43 ` David Chinner
2008-01-15 23:07 ` Pavel Machek
2008-01-15 23:44 ` Daniel Phillips
2008-01-16 0:15 ` Alan Cox
2008-01-16 1:24 ` Daniel Phillips
2008-01-16 1:36 ` Chris Mason
2008-01-17 20:54 ` Pavel Machek
2008-01-16 19:06 ` Bryan Henderson
2008-01-16 20:05 ` Alan Cox
2008-01-17 2:02 ` Daniel Phillips
2008-01-17 21:37 ` Bryan Henderson
2008-01-17 22:45 ` Theodore Tso
2008-01-17 22:58 ` Alan Cox
2008-01-17 23:18 ` Ric Wheeler
2008-01-18 0:31 ` Bryan Henderson
2008-01-18 14:23 ` Theodore Tso
2008-01-18 15:16 ` [Patch] document ext3 requirements (was Re: [RFD] Incrementalfsck) linux-os (Dick Johnson)
2008-01-19 14:53 ` Pavel Machek
2008-01-18 15:26 ` [Patch] document ext3 requirements (was Re: [RFD] Incremental fsck) Ric Wheeler
2008-01-18 20:34 ` Jeff Garzik
2008-01-18 22:35 ` Bryan Henderson
2008-01-18 15:08 ` H. Peter Anvin
2008-01-18 17:43 ` Bryan Henderson
2008-01-16 21:28 ` Eric Sandeen
2008-01-16 11:51 ` Pavel Machek
2008-01-16 12:20 ` Valdis.Kletnieks [this message]
2008-01-19 14:51 ` Pavel Machek
2008-01-16 16:38 ` Christoph Hellwig
2008-01-16 1:44 ` Daniel Phillips
2008-01-16 3:05 ` Rik van Riel
2008-01-17 7:38 ` Andreas Dilger
2008-01-16 11:49 ` Pavel Machek
2008-01-16 20:52 ` Valerie Henson
2008-01-17 12:29 ` Szabolcs Szakacsits
2008-01-17 22:51 ` Daniel Phillips
2008-01-15 1:04 ` [RFD] Incremental fsck Ric Wheeler
2008-01-14 0:22 ` Daniel Phillips
2008-01-09 8:04 ` Valdis.Kletnieks
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