Nice approach, did you run a testclient with random operations or did you do specific calls? Was it in a real production application?
I'd like to do a similiar test adjusted for my purpose and to analyze results for different load-balancing policies.
Sadly it isn't possible, but as far as I see is the grade of how its done very good at the moment, otherwise it would be such small numbers in the results ;)
P.s. Bist du eigentlich einer der (wie ich glaube) wenigen Deutschen hier ;) ?