Re: Repository shrinkage on conversion 1.5 -> 1.6?

On Wed, Jul 28, 2010 at 11:01, John Beranek <john_at_redux.org.uk> wrote:
>
> I maintain a 76000 revision Subversion 1.5 repository that add up to a
> 101GiB FSFS db.
>
> I'm looking to upgrade to 1.6, so did a dump and load cycle. The
> resulting dump file was 173GiB (I use --deltas). What surprised me is
> that the restored repository came out as 71GB - 30GiB smaller!
>
> Is this unusual? Does it suggest some data has gone missing, or what?
> Nothing I saw in the release notes suggest repository efficiencies of
> this order - I have _not_ packed the repository.
>

Hi John,

It looks like representation sharing works particularly well for your
repository.

http://subversion.apache.org/docs/release-notes/1.6.html#rep-sharing

The 30% reduction you're seeing is a pretty nice space savings. Do you
do a lot of branching? Do you have the identical files comitted
separately to different parts of the repository?

// Ben
Received on 2010-07-28 11:51:03 CEST