| Re: [chrony-users] What signs are the offsets? |
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On Mon, May 20, 2019 at 05:11:02PM -0700, Watson Ladd wrote:
> Dear all,
>
> Something I find myself getting confused by is the sign of Last Offset
> and System Time. Does a positive difference in Last Offset mean the
> local system is ahead of the remote, or behind the remote?
It's the same as in the tracking.log. Positive value means ahead of
the remote.
> Does a
> positive difference in System Time mean the System Time is ahead of
> the chrony estimate or behind? The docs are petty unclear on this
> point.
Same as in the tracking.log. Positive means it's behind.
> Chrony and ntpd and RFC 5905 seem to differ on whether or not the
> transmit timestamps come from the system clock or from the estimate
> produced by ntp. Does this pose problems if there are a mix of
> implementations?
I'm not aware of any incompatibilities due to this difference.
--
Miroslav Lichvar
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