linux-kernel - Re: Linux kernel compression with lrzip

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Message-Id: <201011080749.46824.kernel@kolivas.org>
Date:	Mon, 8 Nov 2010 07:49:46 +1100
From:	Con Kolivas <kernel@...ivas.org>
To:	linux-kernel@...r.kernel.org
Subject: Re: Linux kernel compression with lrzip

On Mon, 8 Nov 2010 01:42:52 Alexander E. Patrakov wrote:
> 07.11.2010 16:59, Con Kolivas wrote:
> > Lrzip
> > was a project I began based on rzip which tried to extend the initial
> > compression window beyond 900MB and to use lzma as the back end for the
> > 2nd stage compression.
> 
> <snip>
> 
> > Starting with linux kernel 2.6.36
> > 
> > 413511680 linux-2.6.36.tar
> > 70277083 linux-2.6.36.tar.bz2
> > 59905365 linux-2.6.36.tar.lrz
> 
> So, why are you comparing to tar.bz2, if you use lzma as the backend?
> I.e. this benchmark does nothing to show the benefit from the
> preprocessing stage. Please compare to tar.lzma instead.

It smoked the opposition so there was no need, and this was about the bigger 
files not the one tree.

There's a busload of benchmarks linked. 

http://ck.kolivas.org/apps/lrzip/README.benchmarks

Con

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