[ntp:questions] Trading jitter for offset

Dave Hart davehart at gmail.com
Sun Mar 29 07:29:38 UTC 2009

On Mar 28, 9:25 pm, Unruh <unruh-s... at physics.ubc.ca> wrote:
> chrony makes extensive use of the adjtimex system call in linux
> which allow adjustment of the clock frequency (what is the size of the
> interpolation adjustment between timer ticks), of the tick size (ie how
> many nsec should be added to the clock each time the timer tick occurs)
> and the adjustment timeout (Ie I tell it I want it to adjust the time by
> 3.11ms and it will "rapidly " slew the clock to do that.
> It does not have ntp's own adjustment meechanism ( once a second adjust the
> freq of the clock).
> Ie, the main problem I think is that you would have to mimic that
> technology for windows.
> Curnow had an intrest at one time in porting to windows, but his interest
> or time to keep up chrony is low now so it will have to be done by others

More information about the questions mailing list