On 14 March 2012 17:47, Jim Fulton <j...@zope.com> wrote: > I'm pretty happy with how zc.zlibstorage has worked out. > > Should I build this into ZODB 3.11?
+1 > BTW, lz4 compression looks interesting. > > The Python binding (at least from PyPI) is broken. > I submitted an issue. Hopefully it will be fixed. FWIW, I experimented with c_zlib from https://gist.github.com/242459 in order to use a zlib default dictionary - a 32KB string used to pre-fill the compression buffer. Using a ~75MB Data.fs from a Plone site that compressed down to ~30MB with zc.zlibstorage normally, the most successful dictionary I tried was the end of the Data.fs itself which saved only an additional 6% over an empty dictionary. That feels like an unfair test to me, probably deduplicating serialized catalog bucket values. The next best was the last 32KB from another Plone Data.fs which only managed to save an additional 2.5% and a fairly short dictionary with common pickled classes saved an additional 2%. None of those savings seem worthwhile pursuing further given the extra brittleness involved. Laurence _______________________________________________ For more information about ZODB, see http://zodb.org/ ZODB-Dev mailing list - ZODB-Dev@zope.org https://mail.zope.org/mailman/listinfo/zodb-dev
