]> For all that's worth: we run a program doing lots of symbolic computations and allocating lots of small memory blocks (< a few k) on a variety of machines. The P4 performs roughly proportionally to its frequency compared to the P3; the Athlon is slightly faster than the P3. We ran the program under Linux + OProfile. Roughly 12% of the time is spent within the GC, representing roughly 30% of the cache faults. Surprisingly, it seems that accesses to unboxed floats in some comparison procedures take up 10% of the time and 4% of the page faults. "Profile - don't speculate.". You should probably get OProfile or any other kind of profiler that enables you to count events such as cache faults. David Monniaux http://www.di.ens.fr/~monniaux Laboratoire d'informatique de l'École Normale Supérieure, Paris, France ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners