[ntp:questions] Re: Sufficient # servers to sync to
Brad Knowles
brad at stop.mail-abuse.org
Sat Mar 19 01:56:19 UTC 2005
At 5:21 PM -0800 2005-03-18, David Schwartz wrote:
> A machine reports a time of X and it reports its own accuracy as Y and
> the round trip time is Z. Why does this one machine not define an interval
> X+Y+Z to X-Y-Z?
Because we're talking about intervals between servers.
> I don't see why. Common sense say that if you have three servers and
> they report:
>
> 10:11
> 10:11
> 12:03
When it comes to the Byzantine agreement algorithms, things
rarely make sense when you're talking about degenerate cases.
--
Brad Knowles, <brad at stop.mail-abuse.org>
"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."
-- Benjamin Franklin (1706-1790), reply of the Pennsylvania
Assembly to the Governor, November 11, 1755
SAGE member since 1995. See <http://www.sage.org/> for more info.
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