[ZODB-Dev] ZeoServer, multiple storages and open file handles

[Tim Godfrey]

Hi Jon

Thanks for your response. Is that something that has been done in a later
version of Zeoserver than mine (ZODB3-3.10.3)?

It this your recommended action for the issue I'm having or are there still
some configuration changes I can make?

Tim

On 20 October 2012 19:52, Jon Dyte <jon at totient.co.uk> wrote:

> On 18/10/12 03:29, Tim Godfrey wrote:
>
>> Hi all
>>
>> We have a customer on Plone 4.1 and recently we started to see a great
>> increase in the number of open file descriptors the Zeoserver process uses.
>>
>> We have a pretty big system distributed over many servers as the Plone
>> system gets a lot of requests. Currently we are running a Zeoserver with 30
>> storages and have 16 Zope clients that connect to it.
>>
>> I've had Zeoserver in debug mode to try and get some more insight into
>> the problem and I'm seeing a lot of these errors:
>>
>> Exception in thread Thread-575:
>> Traceback (most recent call last):
>>   File "/opt/informa/Python-2.6/lib/**python2.6/threading.py", line 532,
>> in __bootstrap_inner
>>     self.run()
>>   File "/opt/informa/Python-2.6/lib/**python2.6/threading.py", line 484,
>> in run
>>     self.__target(*self.__args, **self.__kwargs)
>>   File "/opt/informa/buildout-cache/**eggs/ZODB3-3.10.3-py2.6-linux-**
>> x86_64.egg/ZEO/zrpc/**connection.py", line 661, in server_loop
>>     asyncore.poll(30.0, map)
>>   File "/opt/informa/Python-2.6/lib/**python2.6/asyncore.py", line 140,
>> in poll
>>     r, w, e = select.select(r, w, e, timeout)
>> ValueError: filedescriptor out of range in select()
>>
>>
> if the server_loop function in connection.py was changed to call
> asyncore.poll2 as far as I can tell the descriptor out of range
> should go away as it uses the poll call rather than select.
>
>
> Jon
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-- 
Tim Godfrey
Obsidian Consulting Group

P: +61 3 9355 7844
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E: tim at obsidian.com.au
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