Re: [ntp:questions] Quality vs. Quantity

2014-03-23 Thread Terje Mathisen
Daniel Quick wrote: While this should be obvious, I always have to ask how and why... While considering that the number of requests to our time servers will grow over time since the client decides which server to sync with. Do we want a Netspeed setting that assists with taking the load off

Re: [ntp:questions] Quality vs. Quantity

2014-03-23 Thread steven Sommars
Background: NIST operates a DNS load balancer for NTP: time.nist.gov See http://tf.nist.gov/tf-cgi/servers.cgi USNO operates a server load balancer for NTP. See for example: http://tycho.usno.navy.mil/ptti/2010papers/paper9.pdf On Sun, Mar 23, 2014 at 2:43 AM, Terje Mathisen

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-23 Thread Joe Gwinn
Magnus, In article 532e45db.5000...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: Joe, On 21/03/14 17:04, Joe Gwinn wrote: [snip] Will see if I can find Dave's reference. I hit pay dirt yesterday, while searching for data on outliers in 1588 systems.

Re: [ntp:questions] IEEE 1588 (PTP) at the nanosecond level?

2014-03-23 Thread Joe Gwinn
Magnus, In article 532e42c8.6080...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: Joe, On 21/03/14 16:17, Joe Gwinn wrote: Magnus, Thus, another fairly severe environment. I have a personal war story from 1992: At a Air Traffic Control center in Canada,

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-23 Thread William Unruh
On 2014-03-23, Joe Gwinn joegw...@comcast.net wrote: Magnus, In article 532e45db.5000...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: Joe, On 21/03/14 17:04, Joe Gwinn wrote: [snip] Will see if I can find Dave's reference. I hit pay dirt yesterday, while

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-23 Thread Magnus Danielson
Joe, On 23/03/14 23:20, Joe Gwinn wrote: Magnus, In article 532e45db.5000...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: Joe, On 21/03/14 17:04, Joe Gwinn wrote: [snip] It is interesting. I've now read it reasonably closely. The basic approach is to express

Re: [ntp:questions] Quality vs. Quantity

2014-03-23 Thread Danny Mayer
On 3/23/2014 9:43 AM, steven Sommars wrote: Background: NIST operates a DNS load balancer for NTP: time.nist.gov See http://tf.nist.gov/tf-cgi/servers.cgi USNO operates a server load balancer for NTP. See for example: http://tycho.usno.navy.mil/ptti/2010papers/paper9.pdf That's a