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how to increase speed to iterate all file's name in a XFS , about millio

To: linux-xfs@xxxxxxxxxxx
Subject: how to increase speed to iterate all file's name in a XFS , about million files.
From: hank peng <pengxihan@xxxxxxxxx>
Date: Wed, 29 Sep 2010 08:28:08 +0800
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I have a XFS file system which contains about million files in it. I
want to iterate all file's name using readdir function and I found
that a little time-consuming.
Anybody to suggest a way to increase its speed?

The simplest is not all best but the best is surely the simplest!

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