| Re: [chrony-dev] chronyc linear fit data point dump |
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On Fri, Dec 11, 2009 at 07:46:31AM +0100, Håkan Johansson wrote:
> On Fri, 11 Dec 2009, Bill Unruh wrote:
> >On Fri, 11 Dec 2009, Håkan Johansson wrote:
> >>I could not find a command in chronyc to dump all the currently active data
> >>points used in the linear fit for a source. This list together with the
> >>residuals would be nice to see what chronyd is up to. For monitoring, I'm
> >>using (and quite happy with):
> >
> >Not sure what you would want. Of course to some extent the offsets measured
> >and reported in measurement.log are used to determine that linear fit. But in
> >addition, those offsets are continually corrected for the changes in offset
> >and rate that chrony impliments, so the linear regression in on values which
> >can differ significantly from the measured offsets. What do you mean by "what
> >chrony is up to"? How would these values help you in any sense?
>
> The idea would be to see this process of the raw data being
> continuously adjusted in real-time. As sort of an educational tool.
A detailed report about selected source could be useful for remote
debugging. Maybe something similar to ntpq -c rv which includes a dump
of the NTP filter, transfered in plain text to allow modifications
without breaking the protocol.
--
Miroslav Lichvar
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