[ntp:questions] dcf77 receiver makes ntp unstable? (drift and offset get jumpy)

Brad Knowles brad at stop.mail-abuse.org
Mon Feb 7 14:17:20 UTC 2005


At 2:04 PM +0100 2005-02-07, Folkert van Heusden wrote:

>  Well, things *do* run fine(!) with 2.6.9 if I disable the DCF77 receiver and
>  let my ntp-server only sync against ntp-servers on the net! Can it then still
>  be a problem related to acpi and such?

	I don't think that ACPI or APIC would be a problem in that case. 
They seem to interfere the most when trying to use a local refclock 
across a serial line -- the sort of thing that you'd want to use the 
PPSKit mods for, if you were using kernel 2.4.

-- 
Brad Knowles, <brad at stop.mail-abuse.org>

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."

     -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
     Assembly to the Governor, November 11, 1755

   SAGE member since 1995.  See <http://www.sage.org/> for more info.



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