[Zope-dev] still segfaults, this time no ZMySQLDA

[Leonardo Rochael Almeida]

So, what should I try now?

On Wed, 2002-02-27 at 16:18, Matthew T. Kromer wrote:
> Leonardo Rochael Almeida wrote:
> 
> >On Tue, 2002-02-26 at 21:55, Matthew T. Kromer wrote:
> >
> >>in lib/python/Products/PythonScripts/PythonScripts.py, try changing 
> >>Script_magic to be 4, and see if that helps.
> >>
> >
> >Nope, time between restart after the change and 1st crash was aprox.
> >3m15s.
> >
> 
> Rats!  I was hoping that would flush things out, but wasn't expecting it 
> to work.
> 
> >>FYI, some of this is written up in
> >>
> >>  http://www.zope.org/Members/matt/StabilityHOWTO
> >>
> >
> >hmm, I didn't know that page. It mentions trying with the -t 1. In this
> >case, what is the real total number of threads? is it one for Medusa and
> >one for handling Zope requests or is it just one overall? In this case I
> >might be able to run it under Valgrind after all.
> >
> >Should I bother trying a different ExtensionClass.h?
> >
> >Cheers, Leo
> >
> 
> With -t 1, you're still running with more than one real thread, but only 
> 1 worker thread is processing Zope requests.  Most of the time when 
> there is a threading issue, the worker Zope threads are the ones that do 
> the potentially thread-unsafe work, so running with -t 1 will prevent a 
> thread switch from occurring while an exposure could take place.
> 
> You don't need to bother with the different ExtensionClass.h; the magic 
> in my special version is NOT necessary to apply, and should not make 
> your system any more stable.

-- 
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