Performance and profiling AVM2

[zeev.f...@gmail.com]

Hi,
Recently I've ran very fanny Box2DFlash demo using Shumway plugin under FF at: http://box2dflash.sourceforge.net/
You can read a bit more about the project at: http://www.box2dflash.org/about.
According to project description (Sorry I'm not familiar with project's code in depth ....) it was developed using AS3 and makes many calculation for physical, geometric models, and collision detection.
On other hand, visualization uses very limited number of simple geometric forms, like to 2D line, circle and rectangle and theirs visualization time should be negligible (that's my assumption ...).
Thus this demo may be good test for AS3 code processing by AVM2.

Now my question: how can I test AVM2 performance, are there some tools, JS profilers, approaches adopted by you?
SpiderMonkey have had profiler capabilities, so probably them can be added to JS Shell do you use SpiderMonkey for profiling ?

Best Regards,
Ze'ev