Re:Hate leap seconds? Imagine a negative one
by toast0 on Thursday January 13, 2022 @03:20PM
(#29926277)
> And, there are at least three different leap smear schemes I know of: a massive judgment failure that happens again and again.
There's also the exciting version where some of your time servers do it one way, and some do another; you could probably pick two traditional servers, and then one of each of the others and have a really terrible day. From experience with a setup where 4 servers were traditional and one was smeared, there was a lot of variation in time; but thankfully my systems weren't relying on time measured on different servers to be very consistent.
IMHO, leap smear probably should have been done with standard time on the wire, and the host agent doing the smear. But that would be more effort than doing it on the time servers, so there you go.
There's also the exciting version where some of your time servers do it one way, and some do another; you could probably pick two traditional servers, and then one of each of the others and have a really terrible day. From experience with a setup where 4 servers were traditional and one was smeared, there was a lot of variation in time; but thankfully my systems weren't relying on time measured on different servers to be very consistent.
IMHO, leap smear probably should have been done with standard time on the wire, and the host agent doing the smear. But that would be more effort than doing it on the time servers, so there you go.