[LEAPSECS] leap second festivities?

[Poul-Henning Kamp]

--------
In message <20150701104812.GE16965 at localhost>, Miroslav Lichvar writes:

>On Tue, Jun 30, 2015 at 09:42:50PM +0100, Rob Seaman wrote:
>> Any thoughts on watching Google’s (or anybody else’s) smear in action?  Kind of like watching paint dry, but still…
>
>It seems the Google leap smear has finished. Here is a plot of offsets
>of some Google servers I included in my leap second monitoring.
>
>https://mlichvar.fedorapeople.org/leap2015/google_smear.png
>
>It was apparently a linear smear which is difficult to follow for NTP
>clients. 

It's the other way around.

They dropped the raised-cosine thing, because the change of frequency
was bad for the NTP clients PLL's.

The linear smear is just a slightly different frequency for a fixed
period of time, that's a lot easier for the PLL to track.


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.