[time-nuts] NTP stratum 0
Poul-Henning Kamp
phk at phk.freebsd.dk
Sat Jan 14 18:33:21 EST 2006
In message <20060114210541.2B845BDE3 at ip-64-139-1-69.sjc.megapath.net>, Hal Murr
ay writes:
>
>> If you are within about a millisecond, then no one will notice if the
>> time exchange is over the internet...
>
>How about almost no one. This is the time-nuts mailing list after all.
NTPns > show ntpv4 0 partner
total ours others
partners 2000 1144 856
partners good 1759 1118 641
partners bad 241 26 215
partners > 1s 160 6 154
partners < 1s 95 26 69
partners < 100ms 202 77 125
partners < 10ms 638 337 301
partners < 1ms 905 698 207
NTPns >
We're certainly far from "no one", in the above about 60% (698 of
1144) of the machines syncing to my server is in the millisecond
range and about 20% (207 of 856) for machines synching from other
servers. For the entire population it is about 45% (905 of 2000)
--
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.
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