Has anyone had luck using oprofile to profile ocaml-generated executables?  I've played around with it, and it's quite nice, and seems to have some real advantages over gprof (works sensibly in the presence of threads, works without overhead or instrumentation, etc.)  The one thing I haven't been able to get working, though, is call-graph analysis.  To me, it looks like the call-graph information isn't available for ocaml executables.  Has anyone had any luck with getting this to work?

Yaron