Mercurial vs. Bazaar speedtest clone and log - update: hg 1.1 vs. bzr 1.10

[Arne Babenhauserheide]

Am Montag 15 Dezember 2008 08:31:25 schrieb Alexander Belchenko:
> Correction. I guess bzr repo comes from bzr-svn conversion,
> so shared repo format should be explicitly defined as rich-root-pack:
>
> time bzr init-repo . --rich-root-pack

Ah, this one works. Thanks! 

(Reading and answering mails chronologically can be inconvenient :) )


The result is this: 
################################################
bzr optimized local cloning test using a shared repo.
time bzr init-repo bzr
No handlers could be found for logger "bzr"
Shared repository with trees (format: rich-root-pack)
Location:
  shared repository: bzr

real    0m0.442s
user    0m0.328s
sys     0m0.069s
cd bzr
time bzr branch http://code.python.org/python/trunk python-bzr-trunk
No handlers could be found for logger "bzr"
[26234] 2008-12-15 11:55:14.502 INFO: Branched 40773 revision(s).
Branched 40773 revision(s).

real    10m39.557s
user    5m28.317s
sys     0m9.968s

check the size after repacking
bzr pack
No handlers could be found for logger "bzr"
rm .bzr/repositry/obsolete_packs/*
rm: Entfernen von „.bzr/repositry/obsolete_packs/*“ nicht möglich: Datei oder 
Verzeichnis nicht gefunden
du -hs .bzr
213M    .bzr
time bzr branch python-bzr-trunk python-bzr-trunk2 --hardlink
No handlers could be found for logger "bzr"
[26391] 2008-12-15 11:55:19.859 INFO: Branched 40773 revision(s).
Branched 40773 revision(s).

real    0m2.598s
user    0m2.075s
sys     0m0.412s
cd ..
rm -r python-* /tmp/tmp-hg /tmp/tmp-bzr bzr/

################################################

So I added a fifth result section: 

Fifth test: <strong>local clones with shared repository</strong>

As suggested in the Mercurial Mailinglist, I reran the local cloning test for 
Bazaar using a shared repository and forced hardlinks. With this Bazaar needed 
just 2.6s for a local clone, without hardlinks about 12s, so by using shared 
repositories the local cloning becomes quite fast in Bazaar (as long as you 
restrict yourself to the shared repository). 

Best wishes, 
Arne
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