[Zope] RE : Re: Frequent Zope crashes (Zope 2.9.8)

[Paul Brettschneider]

Hi,

--- Tres Seaver <tseaver at palladion.com> a écrit :
> Paul Brettschneider wrote:
> > Hello,
> > 
> > my Zope 2.9.8 instance crashes up to 6 times per
> hour.
> > This is very unfortunate since the constant
> restarting
> > brings performance to its knees.
> > 
> > It runs under Linux in 64 bit mode on an AMD64 .
> > I managed to catch two backtraces with gdb
> > (see end of the mail). Both backtraces show a
> crash
> > in cc_oid_unreferenced(ccobject *self, PyObject
> *oid)
> > in persistent/cPickleCache.c:
> > Either in line 576: v = PyDict_GetItem(self->data,
> > oid);
> > or in line 607: Py_DECREF((ccobject
> > *)((cPersistentObject *)v)->cache);
> > 
> > v and v->cache seem to point to heap:
> > (gdb) print v
> > $1 = (PyObject *) 0x5f8920
> > (gdb) print ((cPersistentObject *)v)->cache
> > $2 = (PerCache *) 0x613620
> > 
> > Always called from Per_dealloc(cPersistentObject
> > *self) in persistent/cPersistence.c
> > in line 578:
> > cPersistenceCAPI->percachedel(self->cache,
> self->oid);
> > 
> > Is this a known issue?
> > 
> > Thank you for any help,
> 
> Can you reproduce using the following from-scratch
> build?

No, the crash only happens with this zope instance and
only under heavy load. I will try to remove all custom
products before filing a bug report.

Thanks,
Paul


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