[ZCM] [ZC] 1073/ 2 Comment "zope not threadsafe in multiprocessor systems"

[Collector: Zope Bugs, Features, and Patches ...]

Issue #1073 Update (Comment) "zope not threadsafe in multiprocessor systems"
 Status Pending, Database/bug medium
To followup, visit:
  http://zope.org/Collectors/Zope/1073

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= Comment - Entry #2 by mcdonc on May 28, 2004 1:13 pm

Can you confirm that this is still an issue?  No one else has reported a similar problem, it seems, and the symptoms don't sound familiar to me.  
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= Request - Entry #1 by Anonymous User on Oct 3, 2003 5:50 pm

While running zope and FLE3 (a zope product) I encountered a lot of hangings while there were multiple users at the same time.

On two of such occasions I was able to get following message:

Error: IOError
[Errno 13] Permission denied: '/var/lib/zope/zope-2_6_1/var/Data.fs.index.index_
tmp' 

The file in questing didn't exist. Restarting zope cleared the problem.

As the same python/zope/fle3 version combination is in use in other single processor computers without any problems I suppose that the cause is some locking problem that appears only in multiprocessor systems.

Unfortunately I can't provide more concrete debug. We have started running zope with just one thread and the service hasn't hanged after that for me to check the problem in more detail.
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