Re: [ntp:questions] Quality vs. Quantity

2014-03-24 Thread Paul
On Mon, Mar 24, 2014 at 1:37 PM, Brian Inglis wrote: > I hope that description is inaccurate, because of the additional > delay and jitter added by passing twice through the front end. > It may not be the case now but that would be an enormous error on the part of the authors. Well designed loa

Re: [ntp:questions] Quality vs. Quantity

2014-03-24 Thread Paul
On Mon, Mar 24, 2014 at 1:42 PM, Terje Mathisen wrote: > > Huh? > > I'd rather expect the current trends to continue, with more and more gear starting to use (often very bad subsets of) the ntp protocol for time sync. The fastest growing device (and for many many people the only) segment is mobil

Re: [ntp:questions] Quality vs. Quantity

2014-03-24 Thread Terje Mathisen
Paul G wrote: (I inadvertently sent this only to Terje Mathisen) On Sun, Mar 23, 2014 at 12:07 AM, Danny Mayer wrote: What do you mean by load-balancing? NTP cannot be load-balanced. Of course it can (at some cost). Obviously. As I noted plain ntp client requests, without signatures or any

Re: [ntp:questions] Quality vs. Quantity

2014-03-24 Thread Brian Inglis
On 2014-03-24 08:53, Paul wrote: On Mon, Mar 24, 2014 at 12:26 AM, Danny Mayer wrote: That's a misconception. While I trust Richard Schmidt in what he says, that's is not what you think he says. It's hard to misinterpret "590SG load balancers" and : "It is the load balancer's duty to assig

Re: [ntp:questions] Quality vs. Quantity

2014-03-24 Thread Jan Ceuleers
On 03/24/2014 04:58 PM, Paul wrote: > On Mon, Mar 24, 2014 at 11:18 AM, Jan Ceuleers > mailto:jan.ceule...@computer.org>> wrote: > > But I wonder what an active "connection" is in this context, since NTP > sits atop UDP. > > These are IP based not TCP/IP. So there's even less of a notion

Re: [ntp:questions] Quality vs. Quantity

2014-03-24 Thread Jochen Bern
On 23.03.2014 03:24, questions-requ...@lists.ntp.org digested: > From: Daniel Quick > > Do we want a Netspeed setting that assists with taking the load off > some of the more heavily, higher-speed servers? or do we want to keep > a setting where we serve fewer clients with the highest resolution

Re: [ntp:questions] Quality vs. Quantity

2014-03-24 Thread Paul
On Mon, Mar 24, 2014 at 11:18 AM, Jan Ceuleers wrote: > But I wonder what an active "connection" is in this context, since NTP > sits atop UDP. These are IP based not TCP/IP. > Do the load balancers track whether an association has > been mobilised They could although the packet inspection c

Re: [ntp:questions] Quality vs. Quantity

2014-03-24 Thread Jan Ceuleers
On 03/24/2014 03:53 PM, Paul wrote: > On Mon, Mar 24, 2014 at 12:26 AM, Danny Mayer wrote: > >> That's a misconception. While I trust Richard Schmidt in what he says, >> that's is not what you think he says. >> > > It's hard to misinterpret "590SG load balancers" and : > > "It is the load balan

Re: [ntp:questions] Quality vs. Quantity

2014-03-24 Thread Paul G
(I inadvertently sent this only to Terje Mathisen) On Sun, Mar 23, 2014 at 12:07 AM, Danny Mayer wrote: > What do you mean by load-balancing? NTP cannot be load-balanced. Of course it can (at some cost). On Sun, Mar 23, 2014 at 3:43 AM, Terje Mathisen wrote: > You really do NOT want load-balanci

Re: [ntp:questions] Quality vs. Quantity

2014-03-24 Thread Paul
On Mon, Mar 24, 2014 at 12:26 AM, Danny Mayer wrote: > That's a misconception. While I trust Richard Schmidt in what he says, > that's is not what you think he says. > It's hard to misinterpret "590SG load balancers" and : "It is the load balancer's duty to assign each incoming NTP request to o

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'

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 wrote: > Daniel

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 some

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 wit

Re: [ntp:questions] Quality vs. Quantity

2014-03-22 Thread Paul
On Sat, Mar 22, 2014 at 8:54 PM, Daniel Quick wrote: > 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? _

[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 heavil