I'm trying to watch the google NTP server leap second smear. This page should update once/minute with my latest data. http://www.n5tnl.com/time/leap_2016/index.html Sorry about the coarse resolution--I've set another monitor station to poll more often and I'll try and append that graph shortly. -- newell N5TNL

Scott -- Thanks very much for doing this, and doing it live. List -- For some background, see these two papers by Martin Burnicki: https://www.meinberg.de/download/burnicki/ntp_leap_smearing_test_results.pdf https://www.meinbergglobal.com/download/burnicki/Leap%20Second%20Smearing%20With%20NTP.pdf /tvb ----- Original Message ----- From: "Scott Newell" <newell+timenuts@n5tnl.com> To: <time-nuts@febo.com> Sent: Saturday, December 31, 2016 9:53 AM Subject: [time-nuts] Leap Second Smear Monitoring > I'm trying to watch the google NTP server leap second smear. This > page should update once/minute with my latest data. > > http://www.n5tnl.com/time/leap_2016/index.html > > Sorry about the coarse resolution--I've set another monitor station > to poll more often and I'll try and append that graph shortly. > > -- > newell N5TNL

Hi, Thought I just remind people that an alternative is to provide UT1 time, as Judah Levine had been doing on a NIST NTP server as a test of concept. Then again, do regular testing of systems to see how they handle leap seconds and fix things until it works is also a quite workable solution. That's what we done for our products and not been able to detect any issues with leap seconds per se. Cheers, Magnus On 12/31/2016 09:34 PM, Tom Van Baak wrote: > Scott -- Thanks very much for doing this, and doing it live. > > List -- For some background, see these two papers by Martin Burnicki: > > https://www.meinberg.de/download/burnicki/ntp_leap_smearing_test_results.pdf > > https://www.meinbergglobal.com/download/burnicki/Leap%20Second%20Smearing%20With%20NTP.pdf > > /tvb > > ----- Original Message ----- > From: "Scott Newell" <newell+timenuts@n5tnl.com> > To: <time-nuts@febo.com> > Sent: Saturday, December 31, 2016 9:53 AM > Subject: [time-nuts] Leap Second Smear Monitoring > > >> I'm trying to watch the google NTP server leap second smear. This >> page should update once/minute with my latest data. >> >> http://www.n5tnl.com/time/leap_2016/index.html >> >> Sorry about the coarse resolution--I've set another monitor station >> to poll more often and I'll try and append that graph shortly. >> >> -- >> newell N5TNL > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

What's the best way to get a test stream for leap seconds? Would it be feasible to have a small set of NTP servers that insert a leap second every other day and remove it alternately? On 31 Dec 2016 8:41 p.m., "Magnus Danielson" <magnus@rubidium.dyndns.org> wrote: > Hi, > > Thought I just remind people that an alternative is to provide UT1 time, > as Judah Levine had been doing on a NIST NTP server as a test of concept. > > Then again, do regular testing of systems to see how they handle leap > seconds and fix things until it works is also a quite workable solution. > That's what we done for our products and not been able to detect any > issues with leap seconds per se. > > Cheers, > Magnus > > On 12/31/2016 09:34 PM, Tom Van Baak wrote: > >> Scott -- Thanks very much for doing this, and doing it live. >> >> List -- For some background, see these two papers by Martin Burnicki: >> >> https://www.meinberg.de/download/burnicki/ntp_leap_smearing_ >> test_results.pdf >> >> https://www.meinbergglobal.com/download/burnicki/Leap%20Seco >> nd%20Smearing%20With%20NTP.pdf >> >> /tvb >> >> ----- Original Message ----- >> From: "Scott Newell" <newell+timenuts@n5tnl.com> >> To: <time-nuts@febo.com> >> Sent: Saturday, December 31, 2016 9:53 AM >> Subject: [time-nuts] Leap Second Smear Monitoring >> >> >> I'm trying to watch the google NTP server leap second smear. This >>> page should update once/minute with my latest data. >>> >>> http://www.n5tnl.com/time/leap_2016/index.html >>> >>> Sorry about the coarse resolution--I've set another monitor station >>> to poll more often and I'll try and append that graph shortly. >>> >>> -- >>> newell N5TNL >>> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/time-nuts >> and follow the instructions there. >> >> _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. >