[Zope-dev] Threads dying on zope 2.7.0 on one Zeo setup, ZServer exception

Heimo Laukkanen huima at iki.fi
Tue May 18 07:10:49 EDT 2004 

Hi ya,

I noticed some weird bahivour that was bringing a setup down on our
servers on testing installation. In our setup we create development 
sandboxes with makefile and in similar fashion also testing/production 
servers.

Our testing/production setup has a little bit different config files 
where from standard config all the commented out lines have been 
removed. Also compared to development instances the instance home is in 
other place. Other than that setups are same.

At the moment with testing setup under load test ZServer dies - leaving 
all but one thread at almost 0% cpu and that one thread working in high 
loads of 90%. Testing similar zeo-setup with development instances do 
not produce this.

We are a bit scared on this, since we do not have clue on what causes 
following behaviour - and eventhough we see that we can get it to work, 
we would like to have an idea on what might be behind this - so that it 
does not bite our butt again.

Below is log snip and traceback of the exceptions when other threads go 
down.

In log-file we get:

2004-05-17T16:47:17 ERROR(200) ZServer uncaptured python exception,
closing channel <ZServer.HTTPServer.zhttp_channel connected
127.0.0.1:47855 at 0x42fdb36c channel#: 589 requests:>
(socket.error:(104, 'Connection reset by peer')
[/opt/portaali/ContentManagement-1.0/python-2.3.3/lib/python2.3/asynchat.py|initiate_send|218] 

[/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZServer/medusa/http_server.py|send|417] 

[/opt/portaali/ContentManagement-1.0/python-2.3.3/lib/python2.3/asyncore.py|send|337])
2004-05-17T16:48:49 ERROR(200) ZServer uncaptured python exception,
closing channel <ZServer.HTTPServer.zhttp_channel connected
127.0.0.1:47924 at 0x430538ac channel#: 651 requests:>
(socket.error:(104, 'Connection reset by peer')
[/opt/portaali/ContentManagement-1.0/python-2.3.3/lib/python2.3/asynchat.py|initiate_send|218] 

[/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZServer/medusa/http_server.py|send|417] 

[/opt/portaali/ContentManagement-1.0/python-2.3.3/lib/python2.3/asyncore.py|send|337])
2004-05-17T16:50:05 ERROR(200) ZServer uncaptured python exception,
closing channel <ZServer.HTTPServer.zhttp_channel connected
127.0.0.1:47961 at 0x42f3ba4c channel#: 683 requests:>
(socket.error:(104, 'Connection reset by peer')
[/opt/portaali/ContentManagement-1.0/python-2.3.3/lib/python2.3/asynchat.py|initiate_send|218] 

[/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZServer/medusa/http_server.py|send|417] 

[/opt/portaali/ContentManagement-1.0/python-2.3.3/lib/python2.3/asyncore.py|send|337])



In tracback we will get:

2004-05-18T11:44:14 INFO(0) Zope Ready to handle requests
Unhandled exception in thread started by <class
ZServer.PubCore.ZServerPublisher.ZServerPublisher at 0x405435cc>
Traceback (most recent call last):
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZServer/PubCore/ZServerPublisher.py", 

line 23, in __init__
     response=response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 372, in publish_module
     environ, debug, request, response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 173, in publish_module_standard
     request.response.exception()
AttributeError: 'NoneType' object has no attribute 'exception'
Unhandled exception in thread started by <class
ZServer.PubCore.ZServerPublisher.ZServerPublisher at 0x405435cc>
Traceback (most recent call last):
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZServer/PubCore/ZServerPublisher.py", 

line 23, in __init__
     response=response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 372, in publish_module
     environ, debug, request, response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 173, in publish_module_standard
     request.response.exception()
AttributeError: 'NoneType' object has no attribute 'exception'
Unhandled exception in thread started by <class
ZServer.PubCore.ZServerPublisher.ZServerPublisher at 0x405435cc>
Traceback (most recent call last):
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZServer/PubCore/ZServerPublisher.py", 

line 23, in __init__
     response=response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 372, in publish_module
     environ, debug, request, response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 173, in publish_module_standard
     request.response.exception()
AttributeError: 'NoneType' object has no attribute 'exception'
Unhandled exception in thread started by <class
ZServer.PubCore.ZServerPublisher.ZServerPublisher at 0x405435cc>
Traceback (most recent call last):
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZServer/PubCore/ZServerPublisher.py", 

line 23, in __init__
     response=response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 372, in publish_module
     environ, debug, request, response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 173, in publish_module_standard
     request.response.exception()
AttributeError: 'NoneType' object has no attribute 'exception'
Unhandled exception in thread started by <class
ZServer.PubCore.ZServerPublisher.ZServerPublisher at 0x405435cc>
Traceback (most recent call last):
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZServer/PubCore/ZServerPublisher.py", 

line 23, in __init__
     response=response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 372, in publish_module
     environ, debug, request, response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 173, in publish_module_standard
     request.response.exception()
AttributeError: 'NoneType' object has no attribute 'exception'
Unhandled exception in thread started by <class
ZServer.PubCore.ZServerPublisher.ZServerPublisher at 0x405435cc>
Traceback (most recent call last):
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZServer/PubCore/ZServerPublisher.py", 

line 23, in __init__
     response=response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 372, in publish_module
     environ, debug, request, response)
   File
"/opt/portaali/ContentManagement-1.0/zope-2.7.0/lib/python/ZPublisher/Publish.py", 

line 173, in publish_module_standard
     request.response.exception()
AttributeError: 'NoneType' object has no attribute 'exception'


-huima

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