Java profiling, EJP and J9

Is anyone here using any Java profiling tools?

I hava a customer trying to use EJP (see
ejp.sourceforge.net), which we have been able
to build and run on Linux. EJP uses the JVMPI.

On QNX, we are able to build the tracer library,
but have problems getting J9 to play nice with it.

So, has anyone here used EJP on QNX, or can you
recommend something else?

–Dennis