Stefan Fuhrmann <stefanfuhrm...@alice-dsl.de> writes: > As of r1224839, FSFS now supports directory deltification. > Please review the changes and run tests against different > repositories so that we get a better idea of what the costs > and benefits are. As soon as I'm back home, I will run tests > against the Apache and KDE repositories. > > So far, I ran tests against the rather small TSVN repository. > It seems that we get 50% more capacity / 33% size savings > for 0 .. 20% CPU overhead.
I've been testing this with the old CollabNet Subversion repository, the first 40,515 Subversion revisions, on my Linux laptop: The db/revs directory (unpacked) is 320MB instead of 490MB. Loading takes about 12% more CPU. Dumping takes about 22% more CPU. which matches your results. Packing removes about 85MB for both repositories. There are operations where reading the directory representations is more dominant. 'svn log' on a path inside the repository uses 100% more CPU. -- uberSVN: Apache Subversion Made Easy http://www.uberSVN.com
