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Re: Fragmentation of Journaling FS

To: Utz Lehmann <leh@xxxxxxxxxxxxxx>, Constantin Loizides <Constantin.Loizides@xxxxxx>
Subject: Re: Fragmentation of Journaling FS
From: Seth Mos <knuffie@xxxxxxxxx>
Date: Wed, 01 Aug 2001 17:22:51 +0200
Cc: xfs-list <linux-xfs@xxxxxxxxxxx>
In-reply-to: <20010801165246.F1132@de.tecosim.com>
References: <3B680A34.C08783AC@isg.de> <3B67D35E.64877CBF@isg.de> <20010801144322.C1132@de.tecosim.com> <3B680A34.C08783AC@isg.de>
Sender: owner-linux-xfs@xxxxxxxxxxx
At 16:52 1-8-2001 +0200, Utz Lehmann wrote:
Hi Constantin

No sharp drop.
That the elapsed time is reduced by the volume size is very interessting. On
the 512MB volume it's only half of the 4GB volume. My test is very quick and
very dirty.


btw: For your agesystem you can maybe add following: - random file deletion - deletion of whole trees - simultaneous writing of files (very important, a lot of filesystems are fragmenting these files badly) - appending to files in different sized pieces (like logfiles)

And after running those test using xfs_fsr to see if it helps :-)

Cheers
--
Seth
Every program has two purposes one for which
it was written and another for which it wasn't
I use the last kind.


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