[LEAPSECS] Windows Server 2019
imp at bsdimp.com
Fri Jul 20 14:16:07 EDT 2018
On Fri, Jul 20, 2018, 12:05 PM Stephen Scott <stephenscott at videotron.ca>
> I would agree and I am not a fan of leap second smearing.
> A.) For an application that depends on an accurate frequency reference
> smearing over 24 hours represents about a 11 ppm frequency shift. This
> exceeds the tolerance specified for some audio/video applications.
> B.) It is not standardized, so maybe it is a smear of maybe its not.
> There is a lack of standards and that is probably the biggest source of
> most leap second problems.
> I have been searching for standards, documentation on how leap seconds
> must be applied in local jurisdictions.
> I find it strange that for time in local time zones the time points are
> shifted by the UTC offset for all 86400 seconds of the day.
> But that the one leap second is treated differently and is not shifted by
> the UTC offset.
> The consequence is that the leap second is being incorporated at critical
> times of the day in many time zones.
> While there is no perfect answer, it seems that Microsoft Azure servers
> got it right for the last one, incorporating the leap second just before
> midnight local time.
Unless you are at UTC+0, I don't see how this can be right... Leap seconds
happen during the day for most time zones...
> Control, on Time and in Sync
> Stephen Scott
> On 2018-07-20 08:03, Nero Imhard wrote:
> scs+ls at eskimo.com schreef op 2018-07-20 11:35:
> The question of what happens if you try to run a leapsec-aware
> kernel downstream of a smearing NTP server is an interesting one.
> My preferred answer is "Don't do that."
> If that translates to "don't smear ntp" I could not agree more.
> Smearing is catering to those who won't clean up their act,
> causing trouble for those who try to do the right thing.
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