[ntp:questions] New ntp Server

Miroslav Lichvar mlichvar at redhat.com
Thu Dec 8 11:50:23 UTC 2011


On Thu, Dec 08, 2011 at 07:53:15AM +0000, Mark C. Stephens wrote:
> Hello Sir Unrah,
> 
> 
> I just use ntpq -p. I am using Dave Harts rather excellent port to windows:
> 
> C:\Program Files\NTP\bin>ntpq -p
>      remote           		refid      	st 	t 	when 	poll 	reach   	delay   	offset 	 jitter
> ==============================================================================
> *GPS_NMEA(1)     	.GPS.           	 0	 l    	1   	16  	377    	0.000   	-0.139   	0.059
> oPPS(1)         	     	.PPS.            	0	 l   	 -   	16  	377    	0.000  	-0.007   	0.002
> 
> I restarted ntpd a couple of hours ago so these number will improve.
> 
> That is a good question, are we talking seconds for offset and jitter here? 

They are milliseconds. If ntpd on Windows can really keep the clock
stable to to ~10 microseconds, the recent suggestion posted here to
never use Windows for serious timekeeping might need to be revisited.

-- 
Miroslav Lichvar


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