linux-ext4 - Re: Ext4 devel interlock meeting minutes (April 23, 2007)

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Message-ID: <462D9CE9.1040402@clusterfs.com>
Date:	Tue, 24 Apr 2007 10:00:09 +0400
From:	Alex Tomas <alex@...sterfs.com>
To:	Avantika Mathur <mathur@...ux.vnet.ibm.com>
CC:	linux-ext4@...r.kernel.org
Subject: Re: Ext4 devel interlock meeting minutes (April 23, 2007)

Avantika Mathur wrote:
> TESTING
> - extents testing
>    - Discussed methods for testing extents on highly fragmented 
> filesystems.
>    - Jose will look into possible tests, including perhaps using the 
> 'aged' option in FFSB
>    - Ted suggested creating a mountoption that creates a bad block 
> allocator which it jumps to a new block group every 8 blocks.  This 
> would force a very large number of extents, and may be a good test for 
> extents.

there is AGGRESSIVE_TEST define which limits number of entries in index/leaf.

> - Large file deletion
>    - Valerie had recently tested large file deletion on ext3/4, but did 
> not see the expected performance gain with ext4 due to compact metadata 
> when using extents.

any details?

thanks, Alex

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