linux-kernel - Re: Reiser4 und LZO compression

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Message-ID: <20060828173721.GA11332@hello-penguin.com>
Date:	Mon, 28 Aug 2006 19:37:21 +0200
From:	Stefan Traby <stefan@...lo-penguin.com>
To:	Hans Reiser <reiser@...esys.com>
Cc:	Alexey Dobriyan <adobriyan@...il.com>, reiserfs-list@...esys.com,
	linux-kernel@...r.kernel.org, Andrew Morton <akpm@...l.org>
Subject: Re: Reiser4 und LZO compression

On Mon, Aug 28, 2006 at 10:06:46AM -0700, Hans Reiser wrote:

> Hmm.  LZO is the best compression algorithm for the task as measured by
> the objectives of good compression effectiveness while still having very
> low CPU usage (the best of those written and GPL'd, there is a slightly
> better one which is proprietary and uses more CPU, LZRW if I remember
> right.  The gzip code base uses too much CPU, though I think Edward made

I don't think that LZO beats LZF in both speed and compression ratio.

LZF is also available under GPL (dual-licensed BSD) and was choosen in favor
of LZO for the next generation suspend-to-disk code of the Linux kernel.

see: http://www.goof.com/pcg/marc/liblzf.html

-- 

  ciao - 
    Stefan
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