[ntp:questions] TSC, default precision, FreeBSD

David Mills mills at udel.edu
Sat Sep 5 18:40:58 UTC 2009


My father was a very good mechanical engineer and screamed at me to use 
correct terminology when talking about resolution, precision and 
accuracy. My engineering professors screamed at me, too. My father's 
calipers could measure clearances to a thousandth of an inch, but the 
surface roughness diluted the precision  to ten times that. The 
terminology I use is precisely (sic) correct according to modern 
engineering practice and correctly describes the intent in the 
specification and implementation.


Garrett Wollman wrote:

>In article <9fa237cd-eaf8-4303-8720-3e290547fa90 at g1g2000pra.googlegroups.com>,
>Dave Hart  <davehart at gmail.com> wrote:
>>I hope this help you understand NTP precision.  I also hope you will
>>cease attempting to conflate it with any other definitions of
>>"precision" or related terms.
>It's a pity that the authors of the NTP specification chose to
>Humpty-Dumpty an existing word with a well-defined meaning.

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