[ntp:questions] Fine tuning ntp.conf

David Taylor david-taylor at blueyonder.co.uk.invalid
Sat Apr 27 05:40:10 UTC 2019

On 26/04/2019 21:27, jeliskoski at gmail.com wrote:
> I think that you are mistaken.
> " The servers joining should not have pool.ntp.org as their upstream server(s), but should configure some good servers manually (those servers may be chosen from the pool. The point is that they are chosen statically instead of assigned randomly at each server restart " - https://www.ntppool.org/en/join.html

As I read it, that refers to pool servers themselves.  Their clients, 
your PC, will choose between the available pool servers for best results 
over time if you use the pool directive.

My suggestion was to avoid very well-known servers which may well be 
stratum-1, but which are are so busy that they provide less accuracy 
than pool servers, and to get the benefit of automatic removal and 
replacement of dead servers.

If accuracy is /that/ critical, you should consider either adding a PPS 
feed to your own PC, or using a GPS/PPS device with good holdover to 
your network, such as:


It all depends on your requirements.
Web: http://www.satsignal.eu

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