Re: NTP accuracy?

Jamie Lokier (
Wed, 2 Dec 1998 12:50:58 +0000

On Tue, Dec 01, 1998 at 01:05:41PM -0800, Larry McVoy wrote:
> hi folks,
> excuse the ignorance of this question, but suppose you had 1,250
> systems hooked up to a networking fabric with 10usec end-end propogatio=
> n
> times, but the times can vary depending upon contention. What I want t=
> o
> know is this: how accurately can NTP sync the clocks across all those
> machines? I know it may be asking for too much, but is it possible to
> get 1usec accuracy? If it makes it any easier, this is a controlled
> environment, so it is possible to have a tree structure in the nodes
> such that the times fanout very quickly to all nodes.

What a darn fine question!

> If it can't be done with NTP, anyone have any suggestions on how to do =
> this
> with a software solution?

Me too!

-- Jamie

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