[ntp:questions] Preparing for the leap second

Dave Hart hart at ntp.org
Tue Jan 10 20:50:36 UTC 2012


On Tue, Jan 10, 2012 at 20:47, Dave Hart <hart at ntp.org> wrote:
> ntpd.  Exactly how the kernel implements that insertion (such as
> whether monotonicity is preserved) is implementation-dependent and can
> be gleaned from system source code or documentation.  On non-Windows
> systems with the kernel loop discipline disabled (by -x or "tinker
> step" [1] or "disable kernel") ntpd will step the clock back one
> second sometime during the first second of the first of the month,
> repeating part of 23:59:59 of the last day of the month.

[1] http://www.eecis.udel.edu/~mills/ntp/html/miscopt.html#tinker

Cheers,
Dave Hart


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