Sean Allen wrote at 2008-3-25 15:23 -0400: > ... > >On Mar 25, 2008, at 2:54 PM, Dieter Maurer wrote: >> Benji York wrote at 2008-3-25 14:24 -0400: >>> ... commit contentions ... >>>> Almost surely there are several causes that all can lead to >>>> contention. >>>> >>>> We already found: >>>> >>>> * client side causes (while the client helds to commit lock) >>>> >>>> - garbage collections (which can block a client in the order of >>>> 10 to 20 s) >... >> A reconfiguration of the garbage collector helped us with this one >> (the standard configuration is not well tuned to processes with >> large amounts of objects). > >what'd you do?
# reconfigure garbage collector # generation 0 GC at "(allocated - freed) == 7.000"; analyse 7.000 objects # generation 1 GC at "(allocated - freed) == 140.000"; analyse 140.000 objects # generation 2 GC at "(allocated - freed) == 1.400.000"; analyse all objects import gc; gc.set_threshold(7000, 20, 10) -- Dieter _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
