[ntp:questions] Keeping NTP Honest
david at ex.djwhome.demon.co.uk.invalid
Wed Jul 15 20:59:02 UTC 2009
John Hasler wrote:
> Evandro Menezes writes:
>> In the real world, ambient temperature changes frequently even in
>> air-conditioned environments, system load affect its internal
>> temperature, network load affects packet jitter, etc. And all this also
>> affects a system's peers, compounding the issue of NTP's slow reaction
> This is all noise. You want to filter it out, not track it.
The problem is that NTP does track it. If the temperature changes, the
rate at which NTP's clock ticks changes and it takes a long time for it
to decide that its clock is wrong, rather than the rest of the world.
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