What is the most efficient way to get a relatively precise (say, at
least millisecond) time value that is guaranteed to inrease
monotonically (even if, say, xntpd adjust the system clock), either
portable, or FreeBSD-specific?  Is there some user library for using the
Pentium performance clock thingy?

I have, of course, looked at gettimeofday(2).  Is this what I should be
using?  Does it involve a system call?

-Jon



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