[LAD] JACK and CPU stress testing

Hey all, I'm currently attempting to stress test my setup of -rt kernel, rtirq scripts, and a Jack client program I've been working on. So my idea is to create a script that runs the programs, and also a cpu-load generating program (cpuburn or alternative). Then collecting stats based on Xruns, % DSP load, etc. I intend to show (trough brute force) that an application is RT capable on machine X with a latency of Y ms. Of course this won't be 100% representative, but the stats will show some RT-safe-ness. Has anybody done this kind of profiling / stress testing with JACK before? Hints / tips / advice / etc welcomed! -Harry