[ntp:hackers] Comments invited
Poul-Henning Kamp
phk at phk.freebsd.dk
Mon Dec 29 01:49:01 PST 2003
In message <3FEFC5DD.60B98907 at udel.edu>, "David L. Mills" writes:
>The monotonic-increasing behavior coincides with the Lamport
>happens-before partial-order assertion. It's nice to be theoretically
>pristine.
Considering that we have hardware platforms where the CPU clock is 1000
times higher than the only reliable timekeeping device, I think that
implementing Lamports device should happen in code which needs this
service.
>As most of my old cesia have bit the dust, I am reduced to GPS.
The Net4501 is still a great platform, the only one I know which
can timestamp PPS signals with only +/- 125ns jitter for $200.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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