[ntp:questions] 500ppm - is it too small?
David Mills
mills at udel.edu
Thu Aug 27 13:55:34 UTC 2009
Harlan,
The 500 PPM clamp has been in NTP and its ancestors since the frequency
discipline was introduced in 1981, There has never been a case when that
limit was exceed that was not due to hardware failure, program bug or
kernel misdesign, all of which has occurred more than once.
Dave
Harlan Stenn wrote:
>Dave,
>
>Thanks for the post. I recall talking to you on the phone about this
>several (perhaps many) years ago, and either the underlying algorithms have
>changed (that call might have been in NTPv3 days) or I misremembered the
>conversation.
>
>
>
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