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I have a situation where I have developed a Web Service (whee) which essentialy does some data preparation, does a ProgramCall, takes the result and manipulates back.

The program called is very fast (sub-second). After pooling AS400 connections using the jtOpen 5.0, I have gotten down to be able to do the actual ProgramCall on our local AS/400 in about 0.7 seconds and on the customers machine in about 1.5 seconds as reported by log statements just before and just after the run(). The customers machine is larger, and newer than ours, so this is weird.

My question is now, what are the NEXT tricks I can use to investigate where the time is spent?

The testing currently runs by me pressing a button in the Eclipse Web Service thingie, so it is only a single invocation at a time which reuses the AS400 object - I was suspecting prestarted job pools etc.

I'd appreciate any suggestions.

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