[Zope-dev] Catalog performance

[Nguyen Quan Son]

Hi,
I have a problem with performance and memory consumption when trying to do some statistics, using following code:
...
docs = container.portal_catalog(meta_type='Document', ...)
for doc in docs:
    obj = doc.getObject()
    value = obj.attr
    ...

With about 10.000 documents this Python script takes 10 minutes and more than 500MB of memory, after that I had to restart Zope. I
am running Zope 2.6.1 + Plone 1.0 on Windows 2000, Xeon P4 with 1GB RAM.
What's wrong with this code? Any suggestion is appreciated.
Nguyen Quan Son.