linux-ext4 - Re: Question on readdir implementation

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Date:	Tue, 15 Sep 2009 17:56:32 +0000
From:	Florian Weimer <fw@...eb.enyo.de>
To:	Theodore Tso <tytso@....edu>
Cc:	Zhang Huan <zhhuan@...il.com>, linux-ext4@...r.kernel.org
Subject: Re: Question on readdir implementation

* Theodore Tso:

> So this is something we could do in the future.  In practice, no one
> has complained about this as far as NFS is concerned, so it's not high
> priority for me to pursue.  Were you worried about this as a practical
> matter, or as a theoretical one?

readdir returning entries in essentially randomized order is a
practical performance problem for many things, from grep -r to tar. 8-(
(My recent FIBMAP/FIEMAP question was related to that, too.)
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