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Date: Mon, 22 Mar 2010 12:00:51 +0000 From: Alexander Clouter <alex@...riz.org.uk> To: linux-kernel@...r.kernel.org Subject: Re: better/faster kernel tarball compression Tomasz Chmielewski <mangoo@...g.org> wrote: > >> 403804160 linux-2.6.34-rc2.tar >> 67479563 linux-2.6.34-rc2.tar.bz2 >> 58452531 linux-2.6.34-rc2.tar.lz > > Speaking of file sizes, xz[1] already provides better compression: > > xz -k -9 linux-2.6.34-rc2.tar > > 55320408 linux-2.6.34-rc2.tar.xz > > xz -e -k -9 linux-2.6.34-rc2.tar > > 54800808 linux-2.6.34-rc2.tar.xz > > One drawback of xz is that it's not multi-threaded, much like bzip2 or > gzip; would be great if it could be changed. > For some time there has been a multi-threaded bzip2 called pbzip2[1], for some time; hell even Debian has it :) I have no idea why the original poster is trying to say how "all teh awesome" his code is being faster, well 'duh' it is using all the cores on $BOX rather than just a single one. I would be interested in comparisons against pbzip2 and the amusingly named pigz[2]...plus a bunch of memory use comparisons, my AR7 board only has 16MB of RAM :) Cheers [1] http://compression.ca/pbzip2/ - supports stdio (de)compression [2] http://www.zlib.net/pigz/ - no idea if this supports stdio -- Alexander Clouter .sigmonster says: Approved for veterans. -- 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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