[ntp:questions] Fine tuning ntp.conf

William Unruh unruh at invalid.ca
Sat Apr 27 16:37:38 UTC 2019

On 2019-04-27, David Taylor <david-taylor at blueyonder.co.uk.invalid> wrote:
> 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:
> http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=120&products_id=272
> It all depends on your requirements.

On the subject of gps/pps receivers, since the Sure OEM board seems to
have disappeared, what is the current recommendation for a cheap gps/pps
board to attach to your computer? (the abo ve is not cheap-- on the
order of $500, rather than $50)

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