[Zope] Zope 2.7.3 Memory Leaks

[Andy Yates]

> -----Original Message-----
> From: Dieter Maurer [mailto:dieter at handshake.de]
> Sent: Monday, January 03, 2005 12:29 PM
> To: Andy Yates
> Cc: zope at zope.org
> Subject: RE: [Zope] Zope 2.7.3 Memory Leaks
> 
> Andy Yates wrote at 2005-1-3 09:06 -0600:
> > ...
> >I've been watching the debug page in the control panel and the
refcounts
> >fluctuate up and down by small amounts but the trend is always up.
They
> >never seem to level off, they always climb.
> >
> >Is this typical or does this suggest a problem?
> 
> Flush the ZODB caches ("Control_Panel --> Database Management -->
> <database> --> "Flush cache" --> "minimize").
> 
> After that, all reference counts should be small.
> If not, you have a leak. The classes with high reference counts
> probably will give you glues which objects are leaking...
>
After flushing main and temporary

Class 	January 2, 2005 5:57 pm 	January 3, 2005 12:54 pm
Delta
DocumentTemplate.DT_In.InClass 	37 	53 	+16
compiler.misc.Set 	10 	19 	+9
compiler.pyassem.PyFlowGraph 	9 	15 	+6
compiler.visitor.ASTVisitor 	8 	14 	+6
RestrictedPython.RCompile.RestrictedExpressionCodeGenerator 	9
14 	+5
compiler.ast.Compare 	6 	11 	+5
compiler.pyassem.Block 	5 	9 	+4
pyrad.dictionary.Dictionary 	4 	8 	+4
pyrad.client.Client 	4 	8 	+4
compiler.ast.Const 	10 	13 	+3
compiler.ast.Expression 	8 	11 	+3
DocumentTemplate.DT_With.With 	8 	11 	+3
compiler.symbols.SymbolVisitor 	3 	6 	+3
compiler.ast.Name 	18 	20 	+2
App.ApplicationManager.DebugManager 	7 	9 	+2
compiler.pycodegen.LocalNameFinder 	5 	7 	+2
compiler.misc.Stack 	5 	7 	+2
compiler.pycodegen.ClassCodeGenerator 	4 	6 	+2
DocumentTemplate.DT_Var.Var 	25 	26 	+1
compiler.pycodegen.FunctionCodeGenerator 	7 	8 	+1
compiler.symbols.ModuleScope 	4 	5 	+1
compiler.pyassem.LineAddrTable 	4 	5 	+1
RestrictedPython.RCompile.RestrictedFunctionCodeGenerator 	3
4 	+1

OK so the numbers are small.  This means there is no leak right?  It may
not be leaking, but python still consumes all available memory and dies
unless I restart Zope every few days. ;-)
 
> > ...
> >Products.Transience.TransientObject.TransientObject 	4041 	14891
> >+10850
> 
> It is strange that you have that many session objects...
> 
> What is your session limit? What is your session exiration time?
> 

Maximum number of subobjects is infinite (0)
Data object timeout is 45 minutes

Andy