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From: "Morten Welinder" <mwelinder@gmail.com>
To: "Nicolas Pitre" <nico@cam.org>
Cc: "Pierre Habouzit" <madcoder@debian.org>,
	"Sam Vilain" <sam@vilain.net>,
	"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 09:18:39 -0500	[thread overview]
Message-ID: <118833cc0801110618x54d2ca70o4c9de9b885799141@mail.gmail.com> (raw)
In-Reply-To: <alpine.LFD.1.00.0801101332150.3054@xanadu.home>

> This is really the big point here.  Git uses _lots_ of *small* objects,
> usually much smaller than 12KB.  For example, my copy of the gcc
> repository has an average of 270 _bytes_ per compressed object, and
> objects must be individually compressed.
>
> Performance with really small objects should be the basis for any
> Git compression algorithm comparison.

If it so happens that one algorithm does much better on small objects
while another does better on large objects, there really is nothing that
prevents using both in a repository.  It's a bit of code bloat, of course.

Morten

  parent reply	other threads:[~2008-01-11 14:19 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
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 [this message]
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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