[ntp:questions] Number of Stratum 1 & Stratum 2 Peers

Martin Burnicki martin.burnicki at meinberg.de
Wed Dec 17 09:47:21 UTC 2014


Phil W Lee wrote:
> Martin Burnicki <martin.burnicki at meinberg.de> considered Tue, 16 Dec
> 2014 12:48:57 +0100 the perfect time to write:
>> However, there is an important limitation: the tzdata version of the
>> leap second file is missing an expiration date, so even if a program
>> like ntpd could use this file directly it would never know if no more
>> leap second has been scheduled after the last one mentioned in this
>> file, or if the file just hasn't been updated recently enough.
>
> If it compared the file it has with the one available from tzdata, it
> could see if there was a difference - it's not exactly huge.
> Even better would be if a checksum or version number was available as
> well, so that could just be compared to the current one, and a new one
> only downloaded if required.

This presumes you have access to version which is known to be current, 
but fails if it is not the case. See also my other reply.

Martin



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