[Zope] Zeo Client hanging

[Maciej Wisniowski]

>
> zope 2.8.5 + zeo
> python 2.3.4 (red hat distribution)
> Red Hat RHEL 4
> Plone 2.1.2
>
> Our zeo clients hang intermittently.  We have no way of reproducing the
> problem, but it occurs daily.  The client hangs and a restart seems to 
> fix the
> problem.
Install DeadlockDebugger and you'll be able to see what is
the state of your threads when Zope becomes unresponsive.

> In the event log with tracing on we get
>
> Trace zeo.zrpc.Connection(C) wait(16697) {server:8100} pending, async=0
>
> There are hundreds to thousands of these until the server is restarted.
>
> In the zeo log we get
>
> Error caught in asyncore asyncore.py
>
> error:(110,'Connection timed out')
I'm not sure what these errors are. Maybe firewall between zeo
server and zeo client closes the connections or something like that?

-- 
Maciej Wisniowski