On 2013-04-26, Biebaut Sven <[email protected]> wrote: >ATTRIBUTION MISSING said: > >>Biebaut Sven wrote: > >>> If I drop the idea of the RTC as a reference clock, am I correct in >>+ stating that, when there is no external synchronisation: >>> - my local clock and my RTC will drift away from each other, but at >>+ least my RTC will be closer to the mark (the DS3231 is chosen for its >>+ precision) > >>Probably not. ntpd will continue to apply first order frequency >>correction to the local clock. > > Ah, I did not realise that. So a system with ntpd but without an external > reference clock would still be more accurate than a system without ntpd > at all ?
Only if ntpd has had access to a real local reference clock, or to remote time servers, for a long enough period of time to calculate the frequency correction. And the ambient conditions and system load match that which existed when the correction was determined. -- Steve Kostecke <[email protected]> NTP Public Services Project - http://support.ntp.org/ _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
