Paul Eggert <eggert@cs.ucla.edu> wrote:

>

> I wonder who first proposed and implemented the 24-hour linear scheme

> that

> Google plans to switch to next time. It's not always that easy to change

> Google's collective mind. Was it someone at Akamai? Amazon? Microsoft?

When I did a survey of leap smear schemes in September, only Amazon was doing -12 to +12 smear. Google originally did a sinusoidal smear, but I gather that interacted worse with ntpd and large polling intervals than piecewise linear.

> Come to think of it, we should document leap smearing. Proposed patch

> attached.

It's probably worth noting that ntpd now has an open implementation of leap smear. Here's a link to the documentation in their Bitkeeper repo: