On Thu, Sep 16, 2010 at 1:23 AM, David L. Mills <[email protected]> wrote: > Miroslav, > > The fastest machine I can find on campus has precision -22, or about 230 ns. > Then, I peeked at time.nist.gov, which is actually three machines behind a > load leveler. It reports to be an i386 running FreeBSD 61. Are you ready for > this? It reports precision -29 or 1.9 ns! I'm rather suspiciousabout that > number.
I think this can be attributed to some code that used to be in ntpd which, on FreeBSD only, used for precision an OS estimate of the clock resolution in place of the measured latency to read the clock used on every other platform. That FreeBSD exception was removed from ntpd years ago, but apparently after the version in use by NIST. Dave Hart _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
