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From: Theodore Tso <tytso@mit.edu>
To: Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Andreas Dilger <adilger@clusterfs.com>,
	sho@tnes.nec.co.jp, linux-ext4@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Subject: Re: [RFC][PATCH 2/3] Move the file data to the new blocks
Date: Sun, 11 Feb 2007 22:11:18 -0500	[thread overview]
Message-ID: <20070212031118.GB10424@thunk.org> (raw)
In-Reply-To: <20070208104739.GA3674@duck.suse.cz>

On Thu, Feb 08, 2007 at 11:47:39AM +0100, Jan Kara wrote:
> > 
> > Well.  Do we really?  Are we looking for a 100% solution here, or a 90% one?
>   Umm, I think that for ext3 having data on one end of the disk and
> indirect blocks on the other end of the disk does not quite help (not
> mentioning that it can create bad free space fragmentation over the time).
> I have not measured it but I'd guess that it would erase the effect of
> moving data closer together. At least for sequential reads..

I don't think anyone is saying we can ignore the metadata; but the
fact is, the cleanest solution for 90% of the problem is to use the
page cache, and as far as the other 10%, Linus has been pushing us to
move at least the directories into the page cache, and it's not insane
to consider moving the rest of the metadata into page cache.  At least
it's something we should consider carefully.

						- Ted

  reply	other threads:[~2007-02-12  3:11 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-16 12:05 [RFC][PATCH 2/3] Move the file data to the new blocks sho
2007-02-05 13:12 ` Jan Kara
2007-02-05 22:06   ` Nathan Scott
2007-02-07  1:35   ` Andrew Morton
2007-02-07 20:46     ` Andreas Dilger
2007-02-07 20:56       ` Andrew Morton
2007-02-08  9:29         ` Jan Kara
2007-02-08  9:45           ` Andrew Morton
2007-02-08 10:21             ` Jan Kara
2007-02-08 10:32               ` Andrew Morton
2007-02-08 10:47                 ` Jan Kara
2007-02-12  3:11                   ` Theodore Tso [this message]
2007-02-07  1:33 ` Andrew Morton
2007-02-07  3:45   ` Eric Sandeen
2007-02-07  9:46     ` Takashi Sato
  -- strict thread matches above, loose matches on Subject: below --
2007-02-08  9:01 Takashi Sato
2006-12-22 10:30 sho
2006-11-09 11:10 sho

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