[ntp:questions] Google and leap seconds
unruh at wormhole.physics.ubc.ca
Wed Sep 21 22:19:45 UTC 2011
On 2011-09-21, Harlan Stenn <stenn at ntp.org> wrote:
> Bill wrote:
>> Some operating systems (eg Linux) have the ability to do a much faster
>> than 500PPM rate change (100000PPM in the case of Linux) but ntp does
>> not make use of that.
> ... because it would violate the assumptions and rules about the loop
> behavior (I'm painting with a wide brush here). If you want a system
? But that 500PPM was an arbitrary and random value chosed X years ago.
> that is designed to work with a faster slew rate that's fine, but then
> you also have to consider legacy and interoperability issues.
sure. But what legacy issues do you have in mind?
> It also goes to timestamp correlation issues.
It would seem to me that a step (infinite PPM) would be far far worse.
ntpd does NOT limit the slew rate to 500PPM. It limits it to infinite
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