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From: Alex Tomas <alex@clusterfs.com>
To: Andreas Dilger <adilger@clusterfs.com>
Cc: Valerie Clement <valerie.clement@bull.net>,
	ext4 development <linux-ext4@vger.kernel.org>
Subject: Re: Large File Deletion Comparison (ext3, ext4, XFS)
Date: Sat, 28 Apr 2007 00:48:30 +0400	[thread overview]
Message-ID: <4632619E.4080208@clusterfs.com> (raw)
In-Reply-To: <20070427203821.GJ5967@schatzie.adilger.int>

Andreas Dilger wrote:
> Ah, one thing that is only mentioned in the URL is that the "IO count" is
> in units of 512-byte sectors.  In the case of XFS doing logical journaling
> this avoids a huge amount of double writes to the journal and then to the
> filesystem.  I still think ext4 could do better than it currently does.

I thought about this in context of huge directories when working set of blocks
is very large and it doesn't fit journal causing frequent commits. two ideas
I was thinking of are: 1) journal "change" where possible 2) compress whole
transaction to be written in the journal

thanks, Alex

      reply	other threads:[~2007-04-27 20:48 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-27 13:41 Large File Deletion Comparison (ext3, ext4, XFS) Valerie Clement
2007-04-27 18:33 ` Theodore Tso
2007-04-27 20:33   ` Andreas Dilger
2007-04-27 18:51 ` Alex Tomas
2007-04-27 20:38 ` Andreas Dilger
2007-04-27 20:48   ` Alex Tomas [this message]

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