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Re: Emacs repository benchmark: bzr and git


From: Lennart Borgman (gmail)
Subject: Re: Emacs repository benchmark: bzr and git
Date: Tue, 18 Mar 2008 16:51:06 +0100
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.9) Gecko/20071031 Thunderbird/2.0.0.9 Mnenhy/0.7.5.666

Teemu Likonen wrote:
I did some benchmarking in git and bzr repositories of Emacs. Some
numbers: 89711 revisions (by "git log --pretty=oneline | wc -l"), 2825
files. Both repositories seem to have just linear history converted from
CVS repo. Both have the same head revision which is
481c2a1e31f32c8aa0fb6d504575b75a18537788 (git) and
revid:cvs-1:tsdh-20080318180244-lxbzttdnh6ecqbka (bzr).

Repositories/branches are pulled from here:
git: git://git.sv.gnu.org/emacs.git
bzr: http://bzr.notengoamigos.org/emacs/trunk/

My system is AMD Sempron 3000+ with 2 GB memory and it's running Debian
GNU/Linux 4.0. I'm using the latest development versions of both git
(1.5.5.rc0.6.gdeda) and bzr (1.4dev). I just measured with 'time'
command how long it takes to run certain commands.



Viewing history
---------------


The complete history:

$ time git log >/dev/null
real    0m5.741s

$ time bzr log >/dev/null
real    3m15.708s

I no nothing about this, but it looks like the bzr developers thinks that bzr is as fast as git:

  http://bazaar-vcs.org/Benchmarks

It looks like something is wrong, I have absolutely no idea what. Was someone here in contact with the bzr developers?




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