[ntp:questions] comparing 2 NTP implementations

brian.utterback at gmail.com brian.utterback at gmail.com
Sun Jan 27 16:47:54 UTC 2008

On Jan 26, 8:05 pm, folk... at vanheusden.com (Folkert van Heusden)
> Hi,
> I would like to compare 2 NTP implementations. What would be the best
> way?
> I was thinking of configuring 7 upstream servers on these 2 physical
> servers and then on a third pc (which is also synced against these 7)
> check the difference?

There is no point even starting to do a comparsion until you have
your objectives. Is the only thing you care about is keeping the
time over a LAN using your own servers? Or do you want to discipline
clock frequency and offset by using various servers over the Internet
providing time to other downstream clients over a WAN? Or something

If the former, then running ntpdate every minute might do the trick.
If the
latter, you will be hard pressed to find anything better than the NTP
implementation from the University of Deleware. But unless you know
what you
are trying to achieve, you will not know if you have got it.

Brian Utterback

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