On Thu, Jun 05, 2003 at 09:53:48AM -0700, Jun Sun wrote: > 1) yes, it is always possible to use some external system-wide > timer source, if available, to solve this problem. However, that could > get tricky too, and I wanted to do something generic which is hopefully > applicable to more systems. Such sources are generally both much lower resolution, and they take a long time to read. But a _consistent_ but higher overhead, lower resolution number is better than an inconsistent number. greg