[ntp:hackers] smearing the leap second

Mike S mikes at flatsurface.com
Fri Jul 10 13:05:26 UTC 2015


On 7/9/2015 5:48 PM, Harlan Stenn wrote:
> We still see huge numbers of people running very old versions of NTP.
> How do you propose to get lots of devices to get upgraded kernels in
> order to properly handle a leap second?

That's not NTP's problem to solve. It's a device issue.

> If they *do* properly handle the leap second, how do you get lots of
> instances of *appliations* to properly handle what looks to them like a
> backward time step?

Ditto, except it is an NTP issue since it only looks like a backward 
time step because the canonical implementation of NTP doesn't follow its 
own RFC, and doesn't use a monotonic timescale. If NTP did it right, 
there wouldn't be any issue.



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