[Zope] Zope, FreeBSD and core dump :(

[Chris McDonough]

Python 2.2.2 has some known crashbugs provoked by Zope.  Use Python
2.2.3.

Also, FreeBSD has a very small default thread stack size (64k), which
can cause core dumps in highly recursive applications (such as Zope). 
This was a problem at least for Python 2.1 on BSD.  I don't use BSD so
I'm not sure if it carries over into the 2.2 series.

See http://www.zwiki.org/PatchPython213 for more information.


On Tue, 2003-09-23 at 09:58, Roger Beavans wrote:
> The last time I looked at the documentation (which was awhile ago) Zope
> 2.6.1 didn't work with Python 2.2.
> Try using your older version of Python.
> 
> rogerb
> 
> -----Original Message-----
> From: zope-bounces+roger=beavans.org at zope.org
> [mailto:zope-bounces+roger=beavans.org at zope.org]On Behalf Of Sergey Volobuev
> Sent: Tuesday, September 23, 2003 8:47 AM
> To: zope at zope.org
> Subject: [Zope] Zope, FreeBSD and core dump :(
> 
> 
> Hi,
> 
> I am moving a site from my server (linux, python 2.1.3, zope 2.6.1) to
> hoster's machine (FreeBSD 4.x, Python 2.2.2,  Zope 2.6.1 (2.6.2 tested too))
> 
> Site is accessed through Apache using mod_rewrite and VHM (at port 80)
> and also directly at port 8082.
> 
> When i access some pages at mysite.com:80, i get
> ===
> ERROR(200) zdaemon Process xxx terminated by signal SIGSERV(11) (core
> dumped)
> ===
> and server restarts. In the browser i get Proxy Error: zero-sized reply.
> It never happens when i access mysite:8082.
> 
> Sometimes i can access mysite:80 if i open and re-save one or another
> zpt through ZMI (mysite:8082) - the site remains accesible for several
> minutes until it dumps core again. And i noticed that some pages of the
> site doesn't cause server restart, and other pages did it very often.
> 
> My site uses following products: PageTemplates, PythonScripts,
> OrderedFolder, TextIndexNG and Epoz. No CMF or Plone or whatever.
> 
> There are zope/var/python.core file, but i am unfamiliar with gdb and
> can't get any useful info with it
> 
> What is the possible causes of this segfaults?
> What can i do to narrow the problem?
> 
> Thanks
> 
> 
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-- 
Chris McDonough <chrism at zope.com>
Zope Corporation