[Zope] Re: CMFExternalFile and huge ZODB pickles

Florent Guillaume fg at nuxeo.com
Wed Feb 22 09:31:17 EST 2006

Pawel Lewicki wrote:
> Hi,
> I have a problem with one Zope application and have no clue what's going 
> on. The problem is with one ControlledPage that creates 
> CMFExternalFiles. It seems that each file is somehow included in ZODB 
> pickle so Data.fs grows very fast. Only packing helps. The side effect 
> is that transaction takes quite a long time so conflicts are very common.
> I tried to recreate the environment on the other machine and everything 
> was fine despite the fact that I used all the same products. The only 
> difference was that original app was running on Linux and I did it on 
> Windows.
> Any clues?
> Products used:
> - ExternalFile 1.2.0
> - CMFExternalFile 0.5
> - Plone 2.0.5
> - Zope 2.7.6
> BTW, how do you distinct read and write conflicts in event.log? I only have
> INFO(0) ZODB conflict error at...

Read conflicts say "ReadConflict" somewhere. Write conflicts do not.
Probably only in recent Zopes though, I doubt 2.7 has that detail.


Florent Guillaume, Nuxeo (Paris, France)   Director of R&D
+33 1 40 33 71 59   http://nuxeo.com   fg at nuxeo.com

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