I will test a application, the user download the flash file from server and play it with browser. when user play the flash some interaction with the server will take place. my client ask me if the flash play well when much users play it at the same time.
anyone can induct me? thanks in advance!
This is something you should definitely test. Our training department has courses that use flash files and we test the courses with Rational. As with any test, you'll need to have the expected workload defined, then modeled--I would include all of the traffic the application is using, not just the flash files. Once this is done, code the test in your choice of tools.