[ZODB-Dev] ZEO LoadEx?

[Jim Fulton]

On Jun 19, 2006, at 2:09 PM, Chris Withers wrote:

> Hi All,
>
> Having problems with a storage/client combo that have started  
> having really bad performance problems since moving to Zope 2.9.3.
>
> The client becomes totally unresponsive, to the point where I had  
> to install DeadlockDebugger to get any sense out of it :-/
>
> Anyway, with that in place, most often the threads seem to be in:
>
>   File "/usr/local/zope/2.9.3/lib/python/ZEO/ServerStub.py", line  
> 192, in loadEx
>     return self.rpc.call("loadEx", oid, version)
>
> ...when things are "slow".
>
> What is LoadEx actually going?
>
> Recent changes in this setup were to move to Zope 2.7 to 2.9,  
> although no real problems were reported for the first day or two,  
> so I'm not sure of this.
>
> At the same time, I moved to using temporary rather than persistent  
> client caches. Could this be to blame?

I don't know the details of this method and don't have time to look atm,
But I'll take a shot in the dark and see if I get lucky. :)
Are you running the same versions of ZODB on the client and the server?

Jim

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