Gentoo Archives: gentoo-dev

From: Patrick Lauer <patrick@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] Having fun with compression
Date: Sun, 30 Apr 2006 19:07:07
Message-Id: 1146423806.15273.2.camel@localhost
In Reply to: Re: [gentoo-dev] Having fun with compression by "Robin H. Johnson"
1 On Sun, 2006-04-30 at 10:30 -0700, Robin H. Johnson wrote:
2 > On Sun, Apr 30, 2006 at 06:30:23PM +0200, Patrick Lauer wrote:
3 > > We have ~15k .tar.gz in distfiles. ~6500 .tar.bz2, ~2000 others.
4 > > A short run over 477 distfiles spanning 833M gave me 586M of .tar.bz2 -
5 > > roughly 30% more efficient!
6 > > A comparison run with 7zip gave me 590M files, so bzip2 seems to be
7 > > quite good.
8 > Try rzip, esp. on the larger files, and see a serious improvement, with
9 > the cost of one major penalty [*].
10 >
11 > * rzip cannot handle streams, it seeks across the file multiple times
12 > for what it does.
13 >
14 642M on my data set - not bad, but bzip2 seems to be better on the files
15 I have tested.
16
17 Patrick
18 --
19 Stand still, and let the rest of the universe move

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