From: Tomasz Chmielewski <mangoo@wpkg.org>
To: Moshe Yudkowsky <moshe@pobox.com>
Cc: Carlos Carvalho <carlos@fisica.ufpr.br>, linux-raid@vger.kernel.org
Subject: Re: One Large md or Many Smaller md for Better Peformance?
Date: Tue, 22 Jan 2008 16:17:14 +0100 [thread overview]
Message-ID: <479608FA.2080904@wpkg.org> (raw)
In-Reply-To: <4795D4B6.4070908@pobox.com>
Moshe Yudkowsky schrieb:
> Carlos Carvalho wrote:
>
>> I use reiser3 and xfs. reiser3 is very good with many small files. A
>> simple test shows interactively perceptible results: removing large
>> files is faster with xfs, removing large directories (ex. the kernel
>> tree) is faster with reiser3.
>
> My current main concern about XFS and reiser3 is writebacks. The default
> mode for ext3 is "journal," which in case of power failure is more
> robust than the writeback modes of XFS, reiser3, or JFS -- or so I'm
> given to understand.
Also, barriers ("barrier=1" option for ext3) are not supported on
filesystems placed on md/dm, it's a bit of a pain.
--
Tomasz Chmielewski
http://wpkg.org
next prev parent reply other threads:[~2008-01-22 15:17 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-20 20:24 One Large md or Many Smaller md for Better Peformance? Moshe Yudkowsky
2008-01-20 21:57 ` Iustin Pop
2008-01-21 3:19 ` Moshe Yudkowsky
2008-01-22 2:32 ` Carlos Carvalho
2008-01-22 11:34 ` Moshe Yudkowsky
2008-01-22 15:17 ` Tomasz Chmielewski [this message]
2008-01-22 15:30 ` Bill Davidsen
2008-01-22 15:32 ` Iustin Pop
2008-01-20 22:18 ` Bill Davidsen
2008-01-21 3:17 ` One Large md or Many Smaller md for Better Performance? Moshe Yudkowsky
2008-01-21 10:41 ` One Large md or Many Smaller md for Better Peformance? Ask Bjørn Hansen
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