[Zope] Strange Zope behavior/Instability

[Jason Spisak]

Rob Sporleder:

> For reasons unknown we lost http connectivity to our Zope server three times
> last night. 

When you say lost connectivity, do you mean the browsers gave you back a
'Server Not Resonding' message, or was is as if Zope was just spinning it's
wheels?  If it was the latter, how long did you wait to see if you did get
a response? 1 minute, 10, 30?

>I've checked the http logs and, as I suspected, didn't find
> anything unusual around the time we lost connectivity. The Python processes
> are still running and everything looks normal except for the connectivity
> problem. Does anybody have any idea what might be causing this? I haven't
> found anything.
> 

This happened to me, but it caused a single process to chew CPU.  Since you
noticed no such chewing, I'll bet it's not the DTML decapitation bug.

> Here are some specifics about our setup...
> 
> version of python:
> 1.5.2
> 
> operating system:
> Linux 2.2.12-20smp (Redhat 6.1)
> 
> services running on machine:
> MySQL
> 2 instances of Zope
> Python
> 
> machine specifics:
> 
> CPU: 0.04
> MEM: 31M of 512M
> Swap: 528688K free
> Disk Space: GB's available on all partitions
> Hardware: 598 Mhz Pentium III, 4 17.4 GB SCSI hard disks
> 
> version of Zope:
> 2.1.4
> 
> Thanks,
> Rob
> 
> 
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Jason Spisak
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