[ntp:questions] Time syncing with something other than ntpd

Brian Inglis Brian.Inglis at SystematicSw.ab.ca
Tue Jan 31 03:49:31 UTC 2017


On 2017-01-30 00:53, David Taylor wrote:
> On 30/01/2017 04:13, sean wrote:
>> I'm real interested in NTP and accurate time, hence why I'm on
>> this newsgroup. I would like to look into getting a time sensor and
>> I hear the Garmin GPS 18X is what some folks run unless they need
>> much more precision. Is this still a pretty well regarding GPS unit
>> for pretty accurate (I know that's highly subjective) time keeping?
>> This would be a hobbyist thing and I'm not running an important
>> business, if you were going to ask.
>> Next question...Do most folks here use the NTPD client, or it is a 
>> mixture of Chrony and openNTPD? Maybe some folks just go with what
>> ships with their OS?
>> The comparison chart is pretty nice and lays each option out
>> nicely:
>> https://chrony.tuxfamily.org/comparison.html
>> I think that's all for now. Feel free to provide any URLs to any 
>> resources I should check out about time syncing, NTP, etc.
> I have been running NTP on multiple systems since 2002, including 
> Linux and Windows (2000 and later), both with hardware sync (GPS18, 
> GPS18x and multiple GPS devices for the Raspberry Pi), and with LAN 
> and Wi-Fi network sources. I find NTP easy to manage and monitor
> over multiple systems, and the fact that it runs on Windows, and can 
> accept GPS devices on Windows very valuable. You can easily get 
> within 10 microseconds in Linux (but be careful of the temperature 
> and GPS antenna location), and within 200 microseconds on Windows 
> when using an attached GPS/PPS device.
>   http://www.satsignal.eu/mrtg/performance_ntp.php
> For the Raspberry Pi:
> https://store.uputronics.com/index.php?route=product/product&product_id=81
> In terms of installations, I think that NTP will have by far the 
> greatest number, and of the three you listed, only NTP runs on 
> Windows.

Worth checking out David Taylor's site above for the practical 
operational details about configuring and running NTP servers 
on various platforms and interfaces, and about building the 
software.
For the definitive reference docs for each release see 

	http://doc.ntp.org/ 

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada


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