chrony

faraphel/chrony

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Author	SHA1	Message	Date
Miroslav Lichvar	b6a27df5b9	sys: include predicted drift in adjtime() offset In drivers with periodic drift removal include in the adjustment also a prediction of the error gained in half of the interval to move the mean offset of the clock closer to zero. E.g. offset of a stable clock drifting by 10 ppm should now be closer to 0 +/- 5 microseconds instead of 5 +/- 5 microseconds.	2015-08-12 16:09:24 +02:00
Bryan Christianson	abb56bded2	sys: add drift removal to Mac OS X driver The darwin kernel implementation of adjtime() does not require the adjustment to be aligned to a tickadj boundary, and we can apply adjustments to the nearest microsecond. Rounding is accounted for by adding any rounding errors back into the offset.	2015-08-03 17:28:19 +02:00
Bryan Christianson	d6aafa3f64	sys: MacOS X driver ported from NetBSD	2015-06-15 14:40:54 +02:00

Author

SHA1

Message

Date

Miroslav Lichvar

b6a27df5b9

sys: include predicted drift in adjtime() offset

In drivers with periodic drift removal include in the adjustment also a
prediction of the error gained in half of the interval to move the mean
offset of the clock closer to zero. E.g. offset of a stable clock
drifting by 10 ppm should now be closer to 0 +/- 5 microseconds instead
of 5 +/- 5 microseconds.

2015-08-12 16:09:24 +02:00

Bryan Christianson

abb56bded2

sys: add drift removal to Mac OS X driver

The darwin kernel implementation of adjtime() does not require the
adjustment to be aligned to a tickadj boundary, and we can apply
adjustments to the nearest microsecond. Rounding is accounted for by
adding any rounding errors back into the offset.

2015-08-03 17:28:19 +02:00

Bryan Christianson

d6aafa3f64

sys: MacOS X driver ported from NetBSD

2015-06-15 14:40:54 +02:00

3 commits