Re: [ntp:questions] Roof antenna, which one, would you bother?

2014-03-22 Thread David Taylor
On 03/01/2014 10:54, Ralph Aichinger wrote: I am currently in the process of remodeling my house and a dedicated outdoor/roof mounted GPS antenna would be possible to mount without excessive cost. I probably would not see a huge difference for timing purposes, but what would your choice of an

Re: [ntp:questions] Roof antenna, which one, would you bother?

2014-03-22 Thread William Unruh
On 2014-03-22, David Taylor david-tay...@blueyonder.co.uk.invalid wrote: On 03/01/2014 10:54, Ralph Aichinger wrote: I am currently in the process of remodeling my house and a dedicated outdoor/roof mounted GPS antenna would be possible to mount without excessive cost. I probably would not

Re: [ntp:questions] Asymmetric Delay and NTP

2014-03-22 Thread Charles Elliott
The basic approach is to express each packet flight in a one-line equation (a row) in a linear-system matrix equation, where the system matrix (the A in the traditional y=Ax+b formulation, where b is zero in the absence of noise), where A is 4 columns wide by a variable number of rows long (one

[ntp:questions] Quality vs. Quantity

2014-03-22 Thread Daniel Quick
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 some of the more

Re: [ntp:questions] Quality vs. Quantity

2014-03-22 Thread Paul
On Sat, Mar 22, 2014 at 8:54 PM, Daniel Quick daniel.qu...@gmail.comwrote: While considering that the number of requests to our time servers will grow over time since the client decides which server to sync with. What if the number of queries over time is decreasing?

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

2014-03-22 Thread Magnus Danielson
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, one 19 cabinet had the green (safety ground) and white (power neutral) cables transposed. This caused 2.3 Vrms at 180

Re: [ntp:questions] Quality vs. Quantity

2014-03-22 Thread Danny Mayer
On 3/22/2014 8:54 PM, 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