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Date: Thu, 24 Oct 2002 07:10:40 +0400
From: Hans Reiser <reiser@namesys.com>
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To: Steven Cole <elenstev@mesatop.com>
CC: Andrew Morton <akpm@digeo.com>,
       Linux Kernel <linux-kernel@vger.kernel.org>,
       Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: 2.5.44-[mm3, ac2] time to tar zxf kernel tarball compared	forvarious
  fs.
References: <1035402133.13140.251.camel@spc9.esa.lanl.gov> 	<3DB6FF24.9B50A7C0@digeo.com> <1035405140.13083.268.camel@spc9.esa.lanl.gov>
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Please repeat the test using a tarball created from a reiserfs 
partition, you'll get better numbers for reiserfs.  Not as good as 
reiser4, but still much better than these.

File order from readdir matters a lot.

It is a bit amazing how many obscurities can bite you with seemingly 
simple tests like this.  We recently ran into one with tar recognizing 
that it was writing to /dev/null, and optimizing for it.

Hans

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