[xep-support] Performance and synchronization: debugging XEP version?

[David Tolpin]

On 23.04.2005, at 17:18, Irving Salisbury III wrote:

> I have the integration kit.  The jar I pulled out was from 
> xep/lib/xep.jar.  There is another one in there called xep-debug.jar, 
> but I am not using that one. Is there anything in the jar itself that 
> can determine if I have the right version?  Seems like I am using the 
> right version.
>

Then I cannot reproduce the contention you are experiencing, and need 
more information to help you.
I am running XEP with 32 concurrent threads on a 4-processors machine, 
and there is no contention under flood of .fo documents.

If you see contention, you should be able to see where exactly in the 
code it occurs. I also recommend that you run 'straight up XEP', and 
the most convenient way to do that is EnMasse/Actinia and a single 
Engine (as opposite to multiple JVMs -- EnMasse is capable of both), 
and see whether there is any slow-down or scalability issue.

I don't see one in my experiments. And the source code convinces me 
that there shouldn't be any unless debugging is turned on, and it is 
turned off in the default xep.jar.

David

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