[arch-general] Leap seconds ntp and chrony?

Karol Blazewicz karol.blazewicz at gmail.com
Mon Jul 2 19:49:23 EDT 2012


On Tue, Jul 3, 2012 at 1:37 AM, Mauro Santos <registo.mailling at gmail.com> wrote:
> Google does run ntp on their network to keep all the machines in sync,
> otherwise stuff stops working, so i guess ntp is not that evil or at
> least it has its uses.

http://www.h-online.com/open/news/item/Leap-second-Linux-can-freeze-1629805.html
In view of the recurring leap second disruptions in its own server
farms, Google took the motto "prevention is better than cure" to heart
and established a "leap smear" process: using modified NTP servers,
Google ensures that every NTP update on the day of the leap second
inserts a few milliseconds that add up to a second by the time the
leap second is actually inserted. Such minor system time differences
are usually tolerated by operating systems.


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