On Wed, Jul 14, 2010 at 02:08:43PM +0200, Frank Muzzulini wrote:
> I also noticed that even directly after an update the server reports
> a root dispersion of ~0.5ms. I don't know however whether this is a
> general feature of ntpd or it is a configured value trying to
> reflect the potential
Miroslav Lichvar wrote:
How do you define reasonable? :)
The root dispersion value in NTP packet has only about 15us
resolution. Ntpd assumes a fixed frequency error and adds to the
dispersion 15 us every second since last reference update, but chrony
uses the estimated skew instead, so with a
Miroslav Lichvar wrote:
Ok, it's exactly as you said, 10.10.9.14 is almost always prefered
because it reports zero root dispersion. And when it makes the 5ms
correction it may be marked as jittery and 10.10.9.13 will be selected
as it's the only selectable source.
So Mills' conservative
