[ntp:questions] Single best NTP status indicator of clock accuracy?
David Woolley
david at ex.djwhome.demon.invalid
Fri Jul 16 20:05:33 UTC 2010
This thread has been dormant for more than 7 months!
Ulrich Windl wrote:
> kjans <kert.jans at gmail.com> writes:
>>
>> There seems to be several possibilities:
>> - delay or offset or jitter (from ntpq -clpeers)
Does not include systematic error.
>> - sync distance (from ntptrace)
Extremely pessimistic.
>> - maximum error (from ntpdc)
Also pessimistic.
>
> estimated error, maybe.
I don't think that includes systematic error due to asymmetry. It's
basically impossible to get a reasonable estimate of that component
without detailed knowledge of the environment.
>
>> - precision (from ntpq -crl)
Characteristic of the hardware/OS and EXTREMELY optimistic as estimate
of error.
>
> That's a constant.
And that as well.
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