From: Alex Tomas <alex@clusterfs.com>
Subject: Re: Ext4 devel interlock meeting minutes (April 23, 2007)
Date: Tue, 24 Apr 2007 10:00:09 +0400
Message-ID: <462D9CE9.1040402@clusterfs.com>
References: <462D42CA.50509@linux.vnet.ibm.com>
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Cc: linux-ext4@vger.kernel.org
To: Avantika Mathur <mathur@linux.vnet.ibm.com>
In-Reply-To: <462D42CA.50509@linux.vnet.ibm.com>
Sender: linux-ext4-owner@vger.kernel.org

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