Re: git repository size vs. subversion repository size

[Jan Hudec <bulb@ucw.cz>]

On Sat, Apr 05, 2008 at 04:34:37 +0200, Björn Steinbrink wrote:
> On 2008.04.04 22:27:12 -0400, Sean Brown wrote:
> > On Fri, Apr 4, 2008 at 6:17 PM, Björn Steinbrink <B.Steinbrink@gmx.de> wrote:
> > > On 2008.04.04 18:02:56 -0400, Sean Brown wrote:
> > >  > Last night I decided to see what storage size differences I might see
> > >  > between an svn repo and a git one.  So I imported a highly used
> > >  > subversion repository into git and was shocked to see how huge the git
> > >  > version was.  I used a repo that has a lot of branches and tagged
> > >  > releases just to make sure importing into git would in fact keep all
> > >  > of the history.  It did keep the history, but the total disk usage was
> > >  > very different:
> > >  >
> > >  > $subversionbox # du -hs ./my_sample_website/
> > >  > 67M   ./my_sample_website
> > >  >
> > >  > $localhost # du -hs ./git-samplesite/
> > >  > 3.6GB ./git-samplesite/
> > >
> > >  How much of that is in the .git/svn directory? The contents of that
> > >  directory are used to map git commits to svn revision and git versions
> > >  before 1.5.4 had a quite space consuming file format for that. The new
> > >  format is a lot better. If you want to switch completely, you can even
> > >  just delete the .git/svn directory, as that's only required as long as
> > >  you want to interact with the corresponding svn repository.
> > >
> > >  And finally, you might want to repack to repository once after the
> > >  initial import, to get a smaller repo. Something like:
> > >  git repack -a -d -f --window=100 --depth=100
> > >
> > 
> > The svn folder (in the.git directory) was only about 4.2 MB.  After
> > running the repack (and then after that git gc as mentioned by another
> > in this thread), it's still about 3.5 GB.
> > 
> > git-samplesite (master)]$ du -hs ./*
> > 2.1G	./branches
> > 1.4G	./tags
> >  66M	./trunk
> 
> Uhm, you forgot to use -s when doing the clone. That would have created

No, not the clone, but the git svn init.

> real git branches instead of the directories... What you are counting is
> the size of the checked out, uncompressed files of _all_ branches and
> _all_ tags (and trunk). The repo size of basically what "du -sh .git"
> would give.
> 
> Björn
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-- 
						 Jan 'Bulb' Hudec <bulb@ucw.cz>