Kevin mailed me today to say: > Appreciate the response. This is the same repository that Trent is > working on, and he has explained the issue to me. This group created a > directory which now has 50k plus directories in it causing the > problem. We have asked them to restructure the repository so there are > not so many directories in one place.
The existence of a directory containing 50000 entries, which take around 40 or so bytes each to store, explained the 2 or 3 MB revision file size they were seeing. - Julian On Thu, 2010-02-11 at 14:11 +0000, Julian Foad wrote: > Konstantin Kolinko wrote: > > 2010/2/11 Kevin Longfellow <klong...@yahoo.com>: > > > Just wondering if someone can shed some light on why a revision file > > is 18 times greater than the amount of checked out data for that > > revision? I'm using Subversion 1.6.5 but not an upgraded and packed > > repository. I'm currently testing that to see if it will make any > > difference and so far it looks like the savings is minimal. > > > > > > The issue here could be misuse of source control, and I am trying to > > find out more about their use. This group has an automated test > > application that will create 1400+ revisions of around 3MB revision > > files per day. With the inability to delete this can't go on for to > > long. > [...] > > > There is 164 KB of data in the checkout but the revision is 3.0MB? > > > > 1. This is a question for the users@ list > > 2. You are committing Test_99820 but checking out Test_174313 > > 3. There was Test_99820.zip > > A very similar query was posted on a forum recently: > <http://subversion.wandisco.com/forums/2-general-support-and-troubleshooting/178-repository-disk-space-analysis-tools.html>. > > In that case, that user, Trent, had a similar situation and was > investigating quite deeply (One thing he said was, '[...] I do a "cat" > of the current and previous revisions and then run "xdelta" on those > files under the assumption that will approximate how much space that > revision occupies.' And, 'I picked a revision, and got the involved > files... they totaled 336k and the delta from the last version was about > 90k. But the revision file in the repository was over 2 gigs!') > > I suggested that he might like to contact the dev list to get further > help in debugging the problem, but he has not done so yet. > > Kevin might find it useful to compare notes or talk to Trent. > > - Julian > >
