Hmm of course it doesnt mean ZPT expressions are causing the leak, but are a side effect. Of course my DTML ZopeZen is watertight and isnt leaking at all :) ----- Original Message ----- From: "Stefan H. Holek" <stefan@epy.co.at> To: "Andy McKay" <andy@agmweb.ca> Cc: <zope-dev@zope.org> Sent: Tuesday, July 23, 2002 3:37 AM Subject: Re: [Zope-dev] Memory Leaks
I do also see the ZPT expression stuff leaking. In my case in this order:
Products.PageTemplates.Expressions.SubPathExpr Products.PageTemplates.Expressions.PathExpr Products.PageTemplates.ZRPythonExpr.PythonExpr
This one does *not* go away when setting ZOPE_SECURITY_POLICY=PYTHON. I am also leaking refs to persistent User objects; may be a side effect though - like your DateTimes.
The site in question serves large ZSQL result sets via ZPT to authenticated users. No CMF/Plone involved.
Stefan
--On Montag, 22. Juli 2002 13:45 -0700 Andy McKay <andy@agmweb.ca> wrote:
Hey all,
A client of mine seems to be plagued with memory leaks. I have a CMF / Plone site on We fixed some security issues that caused a major leak this is the same I believe as http://collector.zope.org/Zope/421, by jiggling settings this no longer an issue. Anyway we are still getting some minor leaks that severly limit the amount of the traffic the box is going to be able take. Lots of different objects are being leaked, including good old DateTime, however I dont believe its this, DateTime just happens to be there.
Possible culprits are (trimmed down debug page) ZPT: Products.PageTemplates.Expressions.PathExpr, Products.PageTemplates.Expressions.SubPathExpr, Products.PageTemplates.TALES.TALESError etc... or AccessControl AccessControl.unauthorized.Unauthorized, AccessControl.SecurityManager.SecurityManager etc...
A quick rummage through LeakFinder hasn't helped too much so Im not sure what too recommend. Good old install ZEO and restart Zope every few hours? Is anyone else having issues?
Configuration:
Plone 0.99 "Almost There" CMF Beta 1.3 beta 1 Zope 2.5.1 Python 2.1.3 RedHat Linux 7.1 Using Apache and pcgi to serve... -- Andy McKay
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