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Discussion of precise time and frequency measurement

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leapseconds, converting between GPS time (week, second) and UTC

JW
Jeff Woolsey
Sat, Jan 19, 2019 8:34 PM

Martin Burnicki wrote:

Agreed, but that's simply wrong. If you ran a PTP daemon instead of an
NTP daemon you had exactly the same problems when the PTP daemon passes
a leap second announcement to the kernel.

PTP never does that.  IEEE-1588 has a different epoch but is based on
TAI, which has no leap seconds.

/I am starting to realize I need to very precise (no pun intended) when />/writing on this mailing list. /

Indeed.  There's likely to be more imprecision here because we can
measure it so tightly...

--
Jeff Woolsey {{woolsey,jlw}@jlw,first.last@{gmail,jlw}}.com
Nature abhors straight antennas, clean lenses, and empty storage.
"Delete! Delete! OK!" -Dr. Bronner on disk space management
Card-sorting, Joel.  -Crow on solitaire

Martin Burnicki wrote: > Agreed, but that's simply wrong. If you ran a PTP daemon instead of an > NTP daemon you had exactly the same problems when the PTP daemon passes > a leap second announcement to the kernel. PTP never does that.  IEEE-1588 has a different epoch but is based on TAI, which has no leap seconds. > >/I am starting to realize I need to very precise (no pun intended) when />/writing on this mailing list. / Indeed.  There's likely to be more imprecision here because we can measure it so tightly... -- Jeff Woolsey {{woolsey,jlw}@jlw,first.last@{gmail,jlw}}.com Nature abhors straight antennas, clean lenses, and empty storage. "Delete! Delete! OK!" -Dr. Bronner on disk space management Card-sorting, Joel. -Crow on solitaire