Proposal - drop the GPSD JSON driver
Eric S. Raymond
esr at thyrsus.com
Sat Oct 22 13:21:59 UTC 2016
Hal Murray <hmurray at megapathdsl.net>:
> >> I assume that using a pipe or socket rather than SHM would fix that.
> > Probably, but then we run unto buffering jitter again.
> Are we on the same wavelength yet? Have we agreed that latency is not
> critical? If so, why is jitter important?
It is possible that I am confused.
What ntpd gets from a clock source is a series of pairs asserting
"at system time X I believe it was UTC time Y".
Are you telling me there is no value in minimizing the time from X to when
the sample triggers a correction, and the variation in that time?
Basic servocontrol theory tells me that control lag is the enemy of
precision and tends to produce whiplash effects. Does that not apply here?
<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>
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