Re: vdelta performance

Jan Bares wrote:
> I did simple test with Subversion 1.0. I inserted 55MB Microsoft Access
> database. The whole size of repository (strings) was ~55MB. Then I
> modified/deleted/added some records and commited the changes. The size of
> the repository (strings) is now ~110MB.

Remember that BDB is a preallocated database, i.e. the file size only grows.
After the update, but before the deltify, the database has two full copies of
the original file (hence 110MB). After the delta has been calculated, most of
that space is recovered. If you were to do the same modify/commit several
times, you shouldn't see the strings database grow by any significant amount.

You could do a dump/load to a fresh database to see the actual usage after a
single round-trip.

John

-- 
John Peacock
Director of Information Research and Technology
Rowman & Littlefield Publishing Group
4720 Boston Way
Lanham, MD 20706
301-459-3366 x.5010
fax 301-429-5747
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