[time-nuts] time.windows.com statistics

Max Robinson max at maxsmusicplace.com
Mon Jul 14 15:05:47 EDT 2014

I have set the time server to us.pool.ntp.org.  It's keeping my clock in 
step with the rest of the world so I am a happy camper.  I had no idea my 
simple question would result in such a long thread.


Max.  K 4 O DS.

Email: max at maxsmusicplace.com

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----- Original Message ----- 
From: "Chris Albertson" <albertson.chris at gmail.com>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Monday, July 14, 2014 11:00 AM
Subject: Re: [time-nuts] time.windows.com statistics

> On Mon, Jul 14, 2014 at 3:38 AM, Tim Shoppa <tshoppa at gmail.com> wrote:
>> Wonder out loud if using NTP server in a load-distributing cloud will 
>> just
>> intrinsically be randomly cruddy, or if this is somehow engineering a
>> source which is often good enough for SNTP users but obviously
>> inappropriate for NTP to prevent extra load from non-windows users.
> Pool servers seem to work well.  But they are randomly assigned only
> once.  Once a connection is made to a pool server it remains connected
> to the same server "for the duration".   Best practice is to use about
> five pool servers and let NTP sort out which are "best".  Even if
> using a GPS you should still configure about five pool servers.
> A load distributed load cloud where each data packet goes to a
> different server just plan would not work for NTP.  If you look at the
> clock selection algorithm the servers would all be rejected and NTP
> would likely fall back to the PC's internal clock as the best source.
> NTP's design depends on network path between any two NTP servers
> remaining mostly constant or at least changing slowly.  Load sharing
> would kill that assumption.
> -- 
> Chris Albertson
> Redondo Beach, California
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