Re: [ntp:questions] Asymmetric Delay and NTP

2014-04-01 Thread E-Mail Sent to this address will be added to the BlackLists
Joe Gwinn wrote: William Unruh un...@invalid.ca wrote: Joe Gwinn joegw...@comcast.net wrote: We have a more direct diagnostic available -- abruptly turn the background traffic off while observing time slew with respect to a free-running rubidium. Sure. As I said if you have a different

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-31 Thread Joe Gwinn
In article lh9fe1$plc$2...@dont-email.me, William Unruh un...@invalid.ca wrote: On 2014-03-30, Joe Gwinn joegw...@comcast.net wrote: Magnus, In article 53375aba.5070...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: On 24/03/14 14:38, Joe Gwinn wrote: [snip]

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-29 Thread Magnus Danielson
On 24/03/14 14:38, Joe Gwinn wrote: Magnus, In article 532fa47b.7060...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: Joe, On 23/03/14 23:20, Joe Gwinn wrote: Magnus, In article 532e45db.5000...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-24 Thread Joe Gwinn
Magnus, In article 532fa47b.7060...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: 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

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] 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] Asymmetric Delay and NTP

2014-03-22 Thread Charles Elliott
] Asymmetric Delay and NTP Magnus, In article 532b5ab9.4070...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: Joe, On 19/03/14 11:55, Joe Gwinn wrote: In article 5328aaa6.70...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: On 18/03/14 01:36

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-21 Thread Joe Gwinn
Magnus, In article 532b5ab9.4070...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: Joe, On 19/03/14 11:55, Joe Gwinn wrote: In article 5328aaa6.70...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: On 18/03/14 01:36, Joe Gwinn wrote:

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-20 Thread Magnus Danielson
Joe, On 19/03/14 11:55, Joe Gwinn wrote: In article 5328aaa6.70...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: On 18/03/14 01:36, Joe Gwinn wrote: In article 5327757e.5040...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: Is that formal

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-19 Thread E-Mail Sent to this address will be added to the BlackLists
Joe Gwinn wrote: What greatly helps is to have a LAN for the heavy applications traffic, and a different LAN for NTP and the like, forcing different paths in the OS kernel to be taken. If you see a difference, I would have though it more likely to be different usage of the IP stacks

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-19 Thread Joe Gwinn
In article lgcoq8$b4j$1...@dont-email.me, E-Mail Sent to this address will be added to the BlackLists Null@BlackList.Anitech-Systems.invalid wrote: Joe Gwinn wrote: What greatly helps is to have a LAN for the heavy applications traffic, and a different LAN for NTP and the like, forcing

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-18 Thread Magnus Danielson
On 18/03/14 01:36, Joe Gwinn wrote: In article 5327757e.5040...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: Joe, On 16/03/14 23:16, Joe Gwinn wrote: I recall seeing something from Dr. Mills saying that a formal proof had been found showing that no packet-exchange

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-17 Thread Terje Mathisen
Joe Gwinn wrote: I recall seeing something from Dr. Mills saying that a formal proof had been found showing that no packet-exchange protocol (like NTP) could tell delay asymmetry from clock offset. Can anyone provide a reference to this proof? This is similar to Einstein's relativity

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-17 Thread Magnus Danielson
Joe, On 16/03/14 23:16, Joe Gwinn wrote: I recall seeing something from Dr. Mills saying that a formal proof had been found showing that no packet-exchange protocol (like NTP) could tell delay asymmetry from clock offset. Can anyone provide a reference to this proof? It's relative simple.

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-17 Thread Joe Gwinn
In article 5327757e.5040...@rubidium.dyndns.org, Magnus Danielson mag...@rubidium.dyndns.org wrote: Joe, On 16/03/14 23:16, Joe Gwinn wrote: I recall seeing something from Dr. Mills saying that a formal proof had been found showing that no packet-exchange protocol (like NTP) could tell

[ntp:questions] Asymmetric Delay and NTP

2014-03-16 Thread Joe Gwinn
I recall seeing something from Dr. Mills saying that a formal proof had been found showing that no packet-exchange protocol (like NTP) could tell delay asymmetry from clock offset. Can anyone provide a reference to this proof? Thanks, Joe Gwinn ___

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-16 Thread David Woolley
On 16/03/14 22:16, Joe Gwinn wrote: I recall seeing something from Dr. Mills saying that a formal proof had been found showing that no packet-exchange protocol (like NTP) could tell delay asymmetry from clock offset. Can anyone provide a reference to this proof? I would have thought it was

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-16 Thread William Unruh
On 2014-03-16, Joe Gwinn joegw...@comcast.net wrote: In article lg5bug$682$1...@dont-email.me, David Woolley david@ex.djwhome.demon.invalid wrote: On 16/03/14 22:16, Joe Gwinn wrote: I recall seeing something from Dr. Mills saying that a formal proof had been found showing that no