Dropping old revisions creates larger repository

Dropping old revisions creates larger repository

I was looking to test what happens when one uses a dump/load cycle to remove old
revisions in a repository.

I moved my dump to a test machine so all my results are on a test box instead of
the production repository. This is using v 1.4.2 on Fedora Core 6.

1. I restored my production dump to a new repo. The total size of the
repository is 1340664 bytes (results from du command).

2. I looked at the size of the original dump file, it's 3168367372 bytes long.
So far so good.

Then I dumped the test repository and left off the first 99 revisions

        svnadmin dump ~/test-repo -r 100:580 > dump-smaller

I reloaded the dump into a new repository.

The new repository looks just as I want it; the early revisions are gone, and
the revisions are renumbered. I took a dump of the new repository. I wanted to
see how much smaller things would be after losing the early history.

The new repo takes 1378148 byes. The new dumpfile is 3230834074 bytes long.
The new repo with fewer revs is larger, so is the dumpfile.

Has anyone else seen this, and can anyone explain why this is happening? I
could believe that the repository is a little bigger perhaps, but not the
dumpfile. What am I missing?

Thanks for any ideas. Erik

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Received on Fri Feb 2 20:22:38 2007