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Date: Tue, 04 Jul 2006 14:13:56 +0300
From: Elefterios Stamatogiannakis <estama@dblab.ece.ntua.gr>
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Subject: Re: [Qemu-devel] QCow v2
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To: qemu-devel@nongnu.org

I agree

Lzma and zlib are pretty much equivalent, so there is pretty much 
nothing to be gained except slightly more compression.

On the other hand with lzo (1) there would be quite a considerable speed 
improvement at the cost of compression.

It could also mean that reading on the qcow format could some times be 
faster (with compressible data) than   reading directly from the hard disk.

lefteris

(1) http://www.oberhumer.com/opensource/lzo/

Johannes Schindelin wrote:
> Hi,
> 
> On Tue, 4 Jul 2006, Christian MICHON wrote:
> 
>> how about also adding lzma compression for qcow ?
> 
> Why lzma? We already have a dependency on zlib, why not just take that?
> 
> Ciao,
> Dscho
> 
> 
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