git 1.6 compared to hg 1.1 ?

[Arne Babenhauserheide]

Am Samstag 20 Dezember 2008 23:26:02 schrieb Greg Ward:
> All my experience is with git 1.5.x and Mercurial 1.0.x, and I have
> not done any benchmarking.  That said, my gut feeling is that
> Mercurial is very fast, and git is unbelievably fast.  If you want to
> see just how fast a VC system can be without regard to other issues,
> look to git.  If you want a VC system that balances usability and
> performance, try Mercurial. Compared to the other competition (e.g.
> darcs, Subversion) Mercurial is plenty fast enough.

I just did some tests to compare the commit speed, this time using a Mercurial 
without all the extensions I activated over time (they slow down the start 
time, and most of them aren't really needed for most workflows). 

On each run all files where changed except for the run where I explicitely 
state that only two files where changed. 

Results: 

init:
- git: 0.217 ± 0.445
- hg: 0.159 ± 0.039
- bzr: 0.568 ± 0.087

initial_commit:
- git: 0.233 ± 0.038
- hg: 0.922 ± 0.284
- bzr: 2.182 ± 0.104

commit_after_append_small:
- git: 0.141 ± 0.032
- hg: 0.703 ± 0.095
- bzr: 1.729 ± 0.130

multiple_commits_with_only_two_files_changed_each:
- git: 0.031 ± 0.021
- hg: 0.286 ± 0.030
- bzr: 0.751 ± 0.095

commit_after_append_of_one_long_line:
- git: 0.261 ± 0.014
- hg: 0.430 ± 0.024
- bzr: 1.046 ± 0.093

commit_after_append_of_many_lines:
- git: 0.514 ± 0.162
- hg: 0.786 ± 0.189
- bzr: 1.649 ± 0.420


this is with git 1.6.0.4, hg from the hg-stable repository and bzr 1.10


I also have a new test running which compares clone speeds, status and 
similar, but that will take some time because bzr takes far too long for the 
initial clone of the Bazaar version of the python repo. 

Also I posted a comparision of just Mercurial and Bazaar on my site: 
- http://draketo.de/english/free-software/light/mercurial-vs-bazaar-
speedtest-2-multiple-runs

We created that one together on the #mercurial IRC channel on freenode.net 

This test didn't yet include git, though. 

Best wishes, 
Arne
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