On Fri, Jun 07, 2002 at 10:57:14PM +0900, Dossy wrote: > Out of curiousity: what are you doing that requires such precise > periodic execution? Embedded software for a pacemaker? :-) Five milliseconds of drift is a lot of drift, even for a non-real-time application, as it only takes 200 iterations to lose a second. It's not so important to me that I have precise periodic execution, but more so that over the course of an hour I get exactly 3600 events (with 5 ms of drift, I would get roughly 3572 events). I suppose it's not critical, but it makes analyzing my log files a lot easier. Paul