Hello. This happened to one of my servers (as you can see here [1] or here [2]), but I don't know if it was caused by a bug in my Debian Linux or if my NTPd trusted a wrong source.
César [1] - http://i.imgur.com/uvbep.png [2] - http://www.pool.ntp.org/scores/50.115.174.192 On Thu, Jan 3, 2013 at 12:07 PM, David J Taylor < [email protected]> wrote: > From: Franck Martin > > > We noticed several ntp servers tried to insert a leap second on 31st > December 2012. > > There was no leap second insertion scheduled for that date. > http://en.wikipedia.org/wiki/**Leap_second#Insertion_of_leap_**seconds<http://en.wikipedia.org/wiki/Leap_second#Insertion_of_leap_seconds>and > ftp://hpiers.obspm.fr/iers/**bul/bulc/bulletinc.dat<ftp://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat> > > The linux kernel seems to still have bugs regarding this, that ripples in > user space. http://it.slashdot.org/story/**12/07/01/1920217/leap-second-** > bug-causes-crashes<http://it.slashdot.org/story/12/07/01/1920217/leap-second-bug-causes-crashes>which > lead then to a high power usage in some data centers: > http://www.**datacenterknowledge.com/**archives/2012/07/03/hosts-** > leap-second-caused-spike-**power-usage/<http://www.datacenterknowledge.com/archives/2012/07/03/hosts-leap-second-caused-spike-power-usage/> > > Nevertheless, why so many ntp servers tried to insert a leap second? > > PS: Will we have to call John MacClane (http://en.wikipedia.org/wiki/** > Live_Free_or_Die_Hard#Plot<http://en.wikipedia.org/wiki/Live_Free_or_Die_Hard#Plot>) > in June 2013? ;) > ==============================**========================= > > Franck, did you happen to notice which version of NTP those servers were > running? Current versions of NTP require a majority vote before adding a > leap-second, whereas earlier versions only needed one server's flag set to > mark a leap-second. I recall this is from a few years back, now, though. > > The Windows, FreeBSD and Linux systems here were unaffected, and are all > running a recent development branch of NTP. > > Cheers, > David > -- > SatSignal Software - Quality software written to your requirements > Web: http://www.satsignal.eu > Email: [email protected] > ______________________________**_________________ > pool mailing list > [email protected] > http://lists.ntp.org/listinfo/**pool <http://lists.ntp.org/listinfo/pool> >
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