[ntp:questions] NTP constant delay ?

unruh unruh at invalid.ca
Thu Dec 27 09:24:58 UTC 2012


On 2012-12-26, Ran Shalit <ranshalit at gmail.com> wrote:
> Hello,
>
> I intend to use SNTP protocol with 2 machines connected by LAN.
> According to decumentatio about SNTP it sys that "SNTP provides
> accuracy typically within 100 ms".

Not sure where this nonesense was written.

> I would like to ask please what can we expect in our configuration
> will the delay be constant within 100msec, meaning that we cn measure

No.
A statement like that means it will vary from + or- 100ms. But ntp is
capable of much better behaviour than that. 

> it constant delay, or will it drift such that in one meanute is will

Yes.

> be delay X, and in other meanutes totally other delay within 100msec.
> If the delay is constant, I assume that we can always delete this
> delay constant X and get a time synchronization around zero. Is that a
> right assumptuion ?
>
> Thank you very much,
> Ran



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