[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.

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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