[time-nuts] ISS NTP operation problems.
Poul-Henning Kamp
phk at phk.freebsd.dk
Fri Jan 8 15:33:33 UTC 2021
--------
Hal Murray writes:
> NTP likes symmetric delays.
That's strictly speaking to true: NTP *assumes* symmetric delays.
If your path is not symmetric, you can a time offset of half the asymmetry.
If your path is stable you can calibrate that out with a temporary reference
or something.
If you path is not stable, or you flip between different servers with different
delays and/or assymetries, your time will not be stable.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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