Date: Thu, 28 Aug 2003 10:22:14 -0700
From: Mike Fedyk <mfedyk@matchmail.com>
To: Alex Tomas <bzzz@tmi.comex.ru>
Cc: linux-kernel@vger.kernel.org, ext2-devel@lists.sourceforge.net
Subject: Re: [Ext2-devel] [RFC] extents support for EXT3
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On Thu, Aug 28, 2003 at 12:22:04PM +0400, Alex Tomas wrote:
> 
> this is 2nd version of the patch. changes:
>   - error handling seems completed
>   - lots of cleanups and comments
>   - few minor bug fixed
> 
> this version of the patch tries to solve couple
> of corner cases:
>   - very long truncate
>   - rewrite 
> 
> it survived dbench, bonnie++ and fsx tests.
> 
> take a look at numbers I've just got, please.
> 
>                       before      after
> 5GB file, creation:   2m31.197s   2m21.933s
> 5GB file, read:       2m25.439s   2m24.833s
> 5GB file, rewrite:    2m48.434s   2m20.958s
> 5GB file, removal:    0m8.760s    0m0.858s

With extents, what are the worst/best cases for max file size on a 1k block
filesystem?  AFAICT, worst case is 16GB if it backs out to the second level
like we have now...
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