[ntp:questions] Slow convergence of NTP with GPS/PPS
David J Taylor
david-taylor at blueyonder.neither-this-part.nor-this-bit.co.uk
Fri Oct 24 13:20:00 UTC 2008
Richard B. Gilbert wrote:
> And ntpd could take many minutes to bludgeon the local clock into
> submission! It's easy to determine and set the correct time. It's
> less easy to determine and set the correct frequency and thus KEEP the
> correct time.
Wasn't the OP looking for about 0.5s accuracy? Ah, no, that was someone
else. Here we're aiming for:
"Our application requires good time accuracy (better than 5ms) but it
also needs to get there quickly (as quickly as possible, but ideally
taking no more than about 15 minutes)."
I would have thought that a GPS and NTP would have been able to achieve
that, at least with a current drift file.
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