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Date: Sun, 03 Mar 2002 15:36:19 +0300
From: Hans Reiser <reiser@namesys.com>
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To: Chris Wedgwood <cw@f00f.org>
CC: Matti Aarnio <matti.aarnio@zmailer.org>,
        Doug McNaught <doug@wireboard.com>,
        "Doug O'Neil" <DougO@seven-systems.com>,
        lk <linux-kernel@vger.kernel.org>
Subject: Re: LFS Support for Sendfile
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Chris Wedgwood wrote:

>On Thu, Feb 28, 2002 at 10:03:25AM +0200, Matti Aarnio wrote:
>
>    The API (kernel syscall) as defined does not support LFS.
>
>I wonder does it really need to?  I mean, a loop calling sendfile for
>2GB (or whatever) at a time is almost as good, if not better in some
>ways.
>
>    The "extent based" filesystems offer flatter performance, and
>    while I can't determine if ReiserFS is exactly of that type, it
>    too offers fast and flat performance.
>
>Reiserfs (v3) isn't extent based but does perform pretty well.  When I
>was messing large numbers of with (what at the time were) large files
>of 50GB or so, XFS proved to be very effective.
>
>
>  --cw
>-
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>
extents are in reiserfs v4.0 (September ship date), and should offer 
much improved performance for large files.

Hans


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