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Date: Tue, 29 Aug 2006 06:05:15 +0200 (MEST) From: Jan Engelhardt <jengelh@...ux01.gwdg.de> To: Nigel Cunningham <ncunningham@...uxmail.org> cc: Edward Shishkin <edward@...esys.com>, Stefan Traby <stefan@...lo-penguin.com>, Hans Reiser <reiser@...esys.com>, 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 >> >>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 >> >> thanks for the info, we will compare them > >For Suspend2, we ended up converting the LZF support to a cryptoapi >plugin. Is there any chance that you could use cryptoapi modules? We >could then have a hope of sharing the support. I am throwing in gzip: would it be meaningful to use that instead? The decoder (inflate.c) is already there. 06:04 shanghai:~/liblzf-1.6 > l configure* -rwxr-xr-x 1 jengelh users 154894 Mar 3 2005 configure -rwxr-xr-x 1 jengelh users 26810 Mar 3 2005 configure.bz2 -rw-r--r-- 1 jengelh users 30611 Aug 28 20:32 configure.gz-z9 -rw-r--r-- 1 jengelh users 30693 Aug 28 20:32 configure.gz-z6 -rw-r--r-- 1 jengelh users 53077 Aug 28 20:32 configure.lzf Jan Engelhardt -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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