FreeBSD Security Advisory FreeBSD-SA-16:16.ntp

Christian Weisgerber naddy at mips.inka.de
Sat Apr 30 13:55:06 UTC 2016


On 2016-04-29, Roger Marquis <marquis at roble.com> wrote:

>> While I cannot speak for anyone other than myself, the two simply aren't
>> equivalent.  As a conscious design choice, OpenNTPD trades off accuracy
>> for code simplicity.
>
> IIRC openntpd is accurate down to ~100ms.

I have no idea where you get that absurd number from.  OpenNTPD is
accurate at least down to 1 ms.  I don't have better time sources.


$ ntpctl -sa
1/1 peers valid, clock synced, stratum 2

peer
   wt tl st  next  poll          offset       delay      jitter
2001:6f8:124a::8 ntp
 *  1 10  1  250s 1506s        -0.193ms     0.493ms     0.067ms

-- 
Christian "naddy" Weisgerber                          naddy at mips.inka.de


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