On 2011-08-27, Richard B. Gilbert <[email protected]> wrote: > On 8/27/2011 12:49 PM, C BlacK wrote: >> I read somewhere that it takes an ntpd 24 hours to truly sync up to a >> stratum 2 master. >> >> Is this true? >> >> Thanks >> >> Chip > > It's nowhere near that bad! > > From a cold start, it will take about thirty minutes to get a > reasonable approximation of the correct time. NTPD will need about > ten hours to achieve the maximum accuracy that it's capable of. If > you are serious about having the correct time, you run NTP 24x365. > > If you want to run from 9:00 AM to 5:00 PM *only*, NTP is a poor choice > for the job. There is a tool called, I believe, CHRONY, which works > much faster. You pay for the speed with somewhat reduced accuracy!
Actually, all my measurements indicate that you pay for the speed with somewhat increased accuracy (like factors of 2 to 3-- actually factors of 100 better accuracy than ntpd have been claimed with GPS refclocks) > This is usually not a problem unless you care about the microseconds. _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
