On Apr 17, 2010, at 7:43 AM, Laurence Rowe <l...@lrowe.co.uk> wrote: > On 17 April 2010 05:27, Jeff Shell <j...@bottlerocket.net> wrote: >> We encountered a problem during an export/import in a Zope 3 based >> application that resulted in something not being importable. This is from >> our very first Zope 3 based application, and I stumbled across some very old >> adapter/utility registrations that I thought I had cleared out. There are >> references to `zope.interface.adapter.Null` which haven't been around for >> years. This is in an old `LocalAdapterRegistry` which, again, I thought I >> had removed along time ago. These objects and what they reference are not >> part of our normal object graph, and I was surprised to see them. >> >> Given an oid, how can I trace what references that object/oid? There is >> something in our normal object hierarchy retaining a reference, but I don't >> know how to find it, and imagine that trying to investigate/load the objects >> from the ZODB level will help me find the culprit. > > I describe how to do this in an article here: > http://plone.org/documentation/kb/debug-zodb-bloat
Oh yeah! I remember looking at that article a few months back. Thanks for the reminder. Looking at our fsdump results, this database seems to have quite a bit of old items that should have been packed / garbage collected a long time ago. This could help me find out why they're not going away. > Since then, Jim has written zc.zodbgc in which the > "multi-zodb-check-refs script will optionally produce a database > of reverse references". > http://www.mail-archive.com/zodb-dev@zope.org/msg04389.html _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org https://mail.zope.org/mailman/listinfo/zodb-dev
