From: Sam Vilain <sam@vilain.net>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nicolas Pitre <nico@cam.org>,
Pierre Habouzit <madcoder@debian.org>,
Git Mailing List <git@vger.kernel.org>,
Johannes Schindelin <Johannes.Schindelin@gmx.de>,
Marco Costalba <mcostalba@gmail.com>,
Junio C Hamano <gitster@pobox.com>
Subject: Re: Decompression speed: zip vs lzo
Date: Fri, 11 Jan 2008 10:45:15 +1300 [thread overview]
Message-ID: <478691EB.1080704@vilain.net> (raw)
In-Reply-To: <alpine.LFD.1.00.0801101252030.3148@woody.linux-foundation.org>
Linus Torvalds wrote:
> Maybe the difference to other repositories isn't huge, and maybe the
> kernel *is* a good test-case, but I just wouldn't take that for granted.
>
> Try with the gcc repo, especially the one that has deep delta chains (so
> it has even *more* deltas in relation to full objects than the kernel has)
For reference, 20 years of Perl with very deep deltas:
wilber:~/src/perl-preview$ du -sk .git
73274 .git
wilber:~/src/perl-preview$ git-repack -a
Counting objects: 244360, done.
Compressing objects: 100% (55493/55493), done.
Writing objects: 100% (244360/244360), done.
Total 244360 (delta 181061), reused 244360 (delta 181061)
wilber:~/src/perl-preview$ du -sk .git/objects/pack/
75389 .git/objects/pack/
wilber:~/src/perl-preview$
There are a few generated files in this history, but really only yacc
files etc. It is in general also a lot of small changes.
Sam.
next prev parent reply other threads:[~2008-01-10 21:45 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-09 22:01 Decompression speed: zip vs lzo Marco Costalba
2008-01-09 22:55 ` Junio C Hamano
2008-01-09 23:23 ` Sam Vilain
2008-01-09 23:31 ` Johannes Schindelin
2008-01-10 1:02 ` Sam Vilain
2008-01-10 5:02 ` Sam Vilain
2008-01-10 9:16 ` Pierre Habouzit
2008-01-10 20:39 ` Nicolas Pitre
2008-01-10 21:01 ` Linus Torvalds
2008-01-10 21:30 ` Nicolas Pitre
2008-01-11 8:57 ` Pierre Habouzit
2008-01-10 21:45 ` Sam Vilain [this message]
2008-01-10 22:03 ` Linus Torvalds
2008-01-10 22:28 ` Sam Vilain
2008-01-10 22:56 ` Linus Torvalds
2008-01-11 1:01 ` Sam Vilain
2008-01-11 2:10 ` Linus Torvalds
2008-01-11 6:29 ` Sam Vilain
2008-01-11 7:05 ` Sam Vilain
2008-01-11 16:03 ` Linus Torvalds
2008-01-12 1:52 ` Sam Vilain
2008-01-12 2:32 ` Nicolas Pitre
2008-01-12 3:06 ` Sam Vilain
2008-01-12 16:09 ` Nicolas Pitre
2008-01-12 16:44 ` Johannes Schindelin
2008-01-12 4:46 ` Junio C Hamano
2008-01-10 21:51 ` Marco Costalba
2008-01-10 22:01 ` Sam Vilain
2008-01-10 22:18 ` Nicolas Pitre
2008-01-11 9:45 ` Pierre Habouzit
2008-01-11 14:27 ` Nicolas Pitre
2008-01-11 14:18 ` Morten Welinder
2008-01-10 3:41 ` Nicolas Pitre
2008-01-10 6:55 ` Marco Costalba
2008-01-10 11:45 ` Marco Costalba
2008-01-10 12:12 ` Johannes Schindelin
2008-01-10 12:18 ` Marco Costalba
2008-01-10 19:34 ` Dana How
2008-01-09 23:49 ` Junio C Hamano
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