[ntp:questions] SNTP with 1ms of precision?
nomail at example.com
Sat Jul 10 07:29:58 UTC 2010
David Woolley <david at ex.djwhome.demon.invalid> wrote:
> Rob wrote:
>> What nearly all of them do is send a query at the specified (or fixed)
>> interval, and put the time from the reply packet in the clock, stepping
>> it to that value.
>> Maybe it cannot be rightfully called SNTP, but it is what we have.
> The SNTP supplied with the reference implementation (4.2.5p32) seems
> close to that. It spreads the steps out, but using tickadj, to slew at
> +/-500ppm, typically, but seems to have no concept of frequency.
The devices that I am talking about probably do not use this
reference implementation, and if they do they probably have heavily
modified it as they underlying "OS" does not have tickadj.
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