Re: [time-nuts] Typical NTP performance? Monitoring multiple NTP servers?

2013-07-31 Thread Magnus Danielson
Hej Anders, On 26/07/13 09:21, Anders Wallin wrote: Hi all, I have two NTP-related questions: 1. We are setting up a White-Rabbit[1] network for time-distribution. We 'seed' the WR-network with 10MHz and PPS signals form atomic clocks. This means on each computer in the network there's a very

Re: [time-nuts] Typical NTP performance? Monitoring multiple NTP servers?

2013-07-31 Thread Chris Albertson
Your time logging method likely introduces a large error. Larger then any problems in the things you are trying to measure. A good NTP system generally works at the few microseconds level. As for running multiple NTP Clients, First off there is not such distintion between a client and a

[time-nuts] Typical NTP performance? Monitoring multiple NTP servers?

2013-07-26 Thread Anders Wallin
Hi all, I have two NTP-related questions: 1. We are setting up a White-Rabbit[1] network for time-distribution. We 'seed' the WR-network with 10MHz and PPS signals form atomic clocks. This means on each computer in the network there's a very accurate PTP-server running on the WR-card, as well as

Re: [time-nuts] Typical NTP performance? Monitoring multiple NTP servers?

2013-07-26 Thread Harlan Stenn
Anders, It's possible to discipline the local clock with PTP and have NTP serve that time to other hosts if that's what you want to do. It's easy to have a single local NTP instance track multiple remote NTP instances. Preferred, even. I routinely see LAN machines running NTP that track time