perfSONAR User Q&A and Other Discussion

[Jason Zurawski <>]

All;

To Echo Alan's early note, when the hardware time source isn't updated, this happens:


If anyone sees this latency change in their graphs today, start checking the time sources you sync against to see that they have been updated.  NTP does the best it can with the materials it has available. 

Thanks;

-jason

Alan Whinery wrote:

DON'T fall into the trap of celebrating New Year's 2017 one second early. You'll never live it down.

Work with your vendors and/or owner's manuals to make sure your GPS/CDMA/WWV/Cesium/Rubidium/Hydrogen MASER, etc keeps good time of day over the coming leap second, December 31, 2016, at 11:59:60 PM, GMT.

On 12/2/2016 9:55 AM, Leap Second wrote:

*SECOND NOTICE*

Dear EndRun Customer,

You are listed in our database as owning a CDMA-synchronized product from EndRun Technologies.  A leap second (UTC time step) is scheduled for December 31, 2016.  To keep your device from being one second off, action is required to configure the leap seconds.

If you are not responsible for this device, please forward this message to the person that is.  Following is additional information and background:

The leap second insertion will take place at 23:59:59 UTC on December 31, 2016.  A leap second is an extra second (23:59:60) that is periodically inserted into the UTC time scale to keep it in alignment with the Earth's rotation.  This means your device may be off by 1 second after December 31.  To prevent that from happening, please read this bulletin for instructions:
http://www.endruntechnologies.com/pdf/LSB160707.pdf

Additional background on leap seconds can be found on our website:
http://www.endruntechnologies.com/leap.htm

Best regards,
EndRun Technical Support

Phone:  1-707-573-8633 or 1-877-749-3878