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Simple repository size experiment

From: Tobias Ringström <tobias_at_ringstrom.mine.nu>
Date: 2003-07-10 20:07:19 CEST

After yesterdays thread about my SVN repo that became much larger than
the CVS repo it was converted from, I've been experimenting a bit and
thought I should share the results. The repository I was talking about
yesterday contains data that I cannot share with the world.

Until I've come up with a public repository with the same properties,
I've downloaded a part of the XFree86 CVS tree, namely xc/programs (or
xc-clients according to cvsup). The CVS repository has 2560 files and
1551 revisions after the conversion to SVN. I'm using "bzip2 -9" for the
compression mentioned below.

Size of uncompressed tar file of CVS repo: 53 MiB
Size of compressed tar file of CVS repo: 11 MiB

After running cvs2svn from svn-0.24.2 and removing all log files in the
db directory:

Size of uncompressed dump file from cvs2svn: 246 MiB
Size of compressed dump file from cvs2svn: 48 MiB

Size of uncompressed tar file of SVN repo: 59 MiB
Size of compressed tar file of SVN repo: 20 MiB

 From reading this list, I really expected SVN repositories to be
smaller than CVS repories, but so far I've not seen any evidence of
that. It's not a lot worse than CVS, but it is definately worse. After
compression, it loses by a factor of two. I'm hoping that there is a
simple bug somewhere... :-)


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Received on Thu Jul 10 20:08:12 2003

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