Kristján V. Jónsson wrote: > You will notice user time jumping from 3.328 to 3.342 to 3.359, from > which I deduce that its resolution is something like 15ms or 60Hz. which, afaik, is the documented clock rate for a multiprocessor (or hyperthreaded or multicore) machine. also see: http://www.sysinternals.com/Utilities/ClockRes.html </F>