-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Paul Brettschneider wrote:
Hi,
--- Tres Seaver <tseaver@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.
Hmm, I was hopeful that there might have been a build glitch (some 32- vs. 64 bit thing). Isolating such a problem will be easier if we can reproduce the error on a system whose Zope you built yourself from source. I wouldn't rip out third-party products, esepecially those which have no C extensions: they can hardly be provoking the segfault. Hmm, I wonder if you might be using a third-party library which *does* (e.g., an RDBMS or LDAP client library, PIL, etc.). Verifying the mechanism used to build them would be important, too. Tres. - -- =================================================================== Tres Seaver +1 540-429-0999 tseaver@palladion.com Palladion Software "Excellence by Design" http://palladion.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHsXOw+gerLs4ltQ4RAuDIAJ40tYAS8pYra5uQp21aiojPAAEIpACg0p0t iwJXtq8I7iozzHCvqF99HSA= =cstY -----END PGP SIGNATURE-----