[ntp:questions] no ntp synchronisation: 2s to 6s time shift !
thierry-martin at ifrance.com
Fri Feb 22 14:54:17 UTC 2008
I will try this.
Martin Burnicki a écrit :
> Thierry MARTIN wrote:
>> Hi Martin,
>> It seems that once again, you're about to save me ;-) !
>> So, ok my system has a Meinberg gps170pci board.
>> As far as I can remember, when GPS signal is not there, NTP does not use
>> GPS refclock as a timesource.
> By default not. This is because ntpd sees the board's "not synchronized"
>> So i guess, you suggest that I use the DCF77 emulation or some other
>> feature from the board?
>> Could you please enlight me about this?
> It's much easier. You run Linux, don't you?
> The kernel module which lets ntpd use the card as reference time source can
> be loaded with a parameter which overrides the real board status and always
> tells ntpd the card is synchronized. Just load the module with the
> following parameter:
> modprobe mbgclock pretend_sync=1
> Of course this parameter should only be used for testing.
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