Hi,

I have a plone2.5 web site in production on zope2.9 with more than 100 000 objects. I would like to analyse the content of the zodb to optimize the web site, find problems and better understand the ZODB.

So i have started using space.py script, and got the results in the joined csv file. BTrees.XX classes are the most important results. So i would like to understand what are those BTrees stuffs:

BTrees._IOBTree.IOBucket

BTrees._IIBTree.IISet

BTrees._OIBTree.OIBucket

BTrees._OOBTree.OOBTree

BTrees._OOBTree.OOBucket

BTrees._IIBTree.IIBucket

BTrees._IIBTree.IITreeSet

BTrees._IOBTree.IOBTree

BTrees._IIBTree.IIBTree

BTrees._OIBTree.OIBTree

according to me, btrees are folders that support a large numbers of entries. why they are totalize 50% of the database (585MO of 1.3Go Data.fs)

I have a Members folder that contains about 8500 folders, got something like 8500 btrees for a simple mail product (one per members), got the PLoneGazette product that store 1 btree folder, but not enough to make 50% of the database, or i have missed sth.

Can anyone help me to understand those results ?

--

JeanMichel FRANCOIS

Makina Corpus