[ntp:questions] Time reset
Unruh
unruh-spam at physics.ubc.ca
Sat May 3 04:45:09 UTC 2008
David Woolley <david at ex.djwhome.demon.co.uk.invalid> writes:
>Ulrich Windl wrote:
>> David Woolley <david at ex.djwhome.demon.co.uk.invalid> writes:
>>
>>> Richard B. Gilbert wrote:
>>>
>>>> that people do some very strange things with computer clocks. I'm thinking,
>>>> in particlar, of at least one individual who deliberately set his clock to
>>>> an incorrect time in order to see if Ntpd would correct it.
>>> Many people do this. It is the naive users' way of testing that ntpd "works".
>>
>> Yes, but many forget to restart ntpd immediately after having chnaged the
>They don't forget. The naive users who run this sort of test have no
>idea that it is an unreasonable thing to do. In fact, restarting ntpd
>on the client would invalidate their test, as the test is about the
>ability of ntpd to track time jumps without any manual intervention.
>I'm not suggesting that ntpd should accommodate naive user tests, but
>just pointing out that they are rather common.
But ntp arguably should handle jumps in time or frequency faster than the
hours or days it takes now.
>> clock. Not having done so is as if the clock suddenly got a transient hardware
>> defect. NTP is not designed repairing hardware defects. It syncs (good)
>> clocks.
>>
>> (I had to say)
>>
>> Ulrich
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