[ntp:questions] NTP vs chrony comparison (Was: oscillations in ntp clock synchronization)

David L. Mills mills at udel.edu
Thu Jan 24 22:19:03 UTC 2008


I really don't want to prolong ths discussion other than to correct 
factual errors. NTP handling of leap seconds does nothing like you 
suspect. Please see the document on leap second handling linked from the 
NTP progject page linked from www.ntp.org.


Unruh wrote:
> (snip)
> Using the Linux adjtimex system call which has the ability to change the
> ticksize which gives much greater than 500PPM slew rate for the clocks.
> ( Up to 100000PPM, although that is never used. ) And as I understand it,
> your handling of leap seconds in ntp also uses far greater than 500PPM slew rates. 

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