Hi Eric
The performance numbers for the SOAP message are slightly better, though
not as good as I would have expected. Do you have any general hints on
tuning the performance? Memory wasn't used much during the test. Is any
OS level tuning advisable for such low traffic scenarios?
Well.. you can refer to http://wso2.org/library/1721 for basic
information on tuning a Linux system for performance with the ESB. Can
you also describe your environment / configuration a bit more.. i.e. The
OS and JDK version and the scenario. If we can replicate your scenario
at our end, we could double check, and also profile the code to find out
where exactly most of the time is spent.
I will try to narrow down the average overhead for different message
sizes and service response times, because I could not see a constant
absolute overhead in ms which would be related to the two additional
network hops (incoming and outgoing).
Also, can you let me know if HTTP 1.1 is being used? Falling back to
HTTP 1.0 requires complete messages to be buffered into memory before we
can start writing them - to know the 'Content-length'. Can we use
ApacheBench to try out your any of your scenarios?.. note that AB does
not support HTTP 1.1 .. but we have a Java close of this that does
support 1.1 ..
asankha
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