Re: [time-nuts] NTP guru

2011-10-17 Thread Hal Murray
> what i mean is... why would it jump from 0 ns to 1000 ns and back? What hardware and OS are you running on? Does it take 1 uSec to read the clock? ntpd keeps track of the resolution of the system clock. It's measured by how long it takes to read the clock rather than observing low bits in t

Re: [time-nuts] NTP guru

2011-10-17 Thread Chris Albertson
On Mon, Oct 17, 2011 at 6:34 PM, Bill Dailey wrote: > what i mean is... why would it jump from 0 ns to 1000 ns and back? > Looks like .01 is the least significant digit. Those three trailing zeros are just tacked on. So the jump to "1000" and back is really a jump to "1" and back, likely

Re: [time-nuts] NTP guru

2011-10-17 Thread Bill Dailey
what i mean is... why would it jump from 0 ns to 1000 ns and back? On Mon, Oct 17, 2011 at 8:04 PM, Bill Dailey wrote: > thanks, what am i seeing here? > > > 55852 3520.152 -0.01000 -29.727 0.01083 0.000168 4 > 55852 3536.152 0.0 -29.727 0.01068 0.000158 4 > 55852 3552.152 0.

Re: [time-nuts] NTP guru

2011-10-17 Thread Hal Murray
> thanks, what am i seeing here? > 55852 3520.152 -0.01000 -29.727 0.01083 0.000168 4 > 55852 3536.152 0.0 -29.727 0.01068 0.000158 4 ... The info is in monopt.html The details sometimes depend upon which version of ntpd you are using so it's best to use the documentation th

[time-nuts] NTP guru

2011-10-17 Thread Bill Dailey
thanks, what am i seeing here? 55852 3520.152 -0.01000 -29.727 0.01083 0.000168 4 55852 3536.152 0.0 -29.727 0.01068 0.000158 4 55852 3552.152 0.0 -29.727 0.01054 0.000147 4 55852 3568.152 -0.02000 -29.728 0.01074 0.000221 4 55852 3584.152 0.0 -29.7

Re: [time-nuts] NTP guru

2011-10-17 Thread mike cook
Le 17/10/2011 16:55, Bill Dailey a écrit : I need an NTP guru for a couple NTP questions. I have my Fury GPSDO hooked up to a linux (ubuntu) computer have offset in the "time-nuts" category (less than a microsecond) with pps. I am wondering where to go from here so I can actually quantify the p

[time-nuts] NTP guru

2011-10-17 Thread Bill Dailey
I need an NTP guru for a couple NTP questions. I have my Fury GPSDO hooked up to a linux (ubuntu) computer have offset in the "time-nuts" category (less than a microsecond) with pps. I am wondering where to go from here so I can actually quantify the precision (it is below the standard minimum fo