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Groups > comp.os.linux.networking > #2040

Re: time server ??

From Chris Davies <chris-usenet@roaima.co.uk>
Newsgroups comp.os.linux.networking
Subject Re: time server ??
Date 2013-03-18 13:16 +0000
Organization Roaima. Harrogate, North Yorkshire, UK
Message-ID <plgj1axf8c.ln2@news.roaima.co.uk> (permalink)
References (1 earlier) <6493d69a-b488-4d62-9e09-961e41924fba@googlegroups.com> <KoH0t.324664$J13.89423@newsfe08.iad> <ki46oo$2q2e$1@saria.nerim.net> <ki4kcp$dru$2@dont-email.me> <slrnkkc2fd.len.ibuprofin@fermi.phx.az.us>

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Moe Trin <ibuprofin@painkiller.example.tld.invalid> wrote:
> [fermi ~]$ host ad.ntp.pool.org
> ad.ntp.pool.org has address 64.99.80.30
> [fermi ~]$ whois 64.99.80.30
>   [SNIP]
>    96 Mowat Avenue
>    Toronto, ON M6K 3M1
>    CA
>   [SNIP]
> [fermi ~]$

> Above, the last I looked neither Andorra or the Faroe Islands are
> located on or close to Mowat Avenue in Toronto, Canada.

I don't see anything in the original whois record that says 64.99.80.30
itself is in Toronto. What you picked out is actually the address provided
by the Tucows.com registrar (see the two lines above your SNIP mark).

Now back to the question about the ntp.pool.org. The
recommendation is to use your country code designation in the Pool,
eg. {0,1,2,3}.uk.ntp.pool.org, but this isn't essential. The advantage
is that if local servers become available they will rotate into the
Pool. If no such servers are available then you're no worse off than if
you'd just used the global ntp.pool.org anyway.

See http://www.pool.ntp.org/en/use.html

It may be important to be aware that the Pool does not guarantee to
deliver time with an accuracy of better than one second (I can't find
a reference to this; I think it was on the mailing list a year or
so back.) That operators such as myself can usually deliver at NTP
accuracies of considerably better than this is a bonus. Many of us
are on ADSL links and the inherent assymetry upsets NTP's algorithms
sufficiently that millisecond accuracy simply isn't possible.

Chris

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Thread

time server ?? Andre <pas@pourmois.be> - 2011-08-26 07:34 +0000
  Re: time server ?? Thad Floryan <thad@thadlabs.com> - 2011-08-26 00:48 -0700
    Re: time server ?? Andre <pas@pourmois.be> - 2011-08-26 08:30 +0000
    Re: time server ?? unruh <unruh@wormhole.physics.ubc.ca> - 2011-08-26 14:13 +0000
  Re: time server ?? unruh <unruh@wormhole.physics.ubc.ca> - 2011-08-26 14:09 +0000
  Re: time server ?? passion.rp@gmail.com - 2013-03-15 00:27 -0700
    Re: time server ?? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2013-03-15 11:26 +0000
      Re: time server ?? Michael Black <et472@ncf.ca> - 2013-03-15 20:33 -0400
        Re: time server ?? J G Miller <miller@yoyo.ORG> - 2013-03-16 15:31 +0000
        Re: time server ?? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2013-03-18 21:01 +0000
    Re: time server ?? unruh <unruh@invalid.ca> - 2013-03-15 15:47 +0000
      Re: time server ?? Pascal Hambourg <boite-a-spam@plouf.fr.eu.org> - 2013-03-17 11:43 +0100
        Re: time server ?? J G Miller <miller@yoyo.ORG> - 2013-03-17 14:36 +0000
          Re: time server ?? Moe Trin <ibuprofin@painkiller.example.tld.invalid> - 2013-03-17 18:20 +0000
            Re: time server ?? Chris Davies <chris-usenet@roaima.co.uk> - 2013-03-18 13:16 +0000
              Re: time server ?? Moe Trin <ibuprofin@painkiller.example.tld.invalid> - 2013-03-18 19:53 +0000
                Re: time server ?? unruh <unruh@invalid.ca> - 2013-03-18 20:40 +0000
                Re: time server ?? Chris Davies <chris-usenet@roaima.co.uk> - 2013-03-19 10:58 +0000
                Re: time server ?? Moe Trin <ibuprofin@painkiller.example.tld.invalid> - 2013-03-19 19:55 +0000
                Re: time server ?? unruh <unruh@invalid.ca> - 2013-03-19 20:32 +0000
                Re: time server ?? Moe Trin <ibuprofin@painkiller.example.tld.invalid> - 2013-03-20 03:25 +0000
                Re: time server ?? unruh <unruh@invalid.ca> - 2013-03-20 16:28 +0000
                Re: time server ?? Moe Trin <ibuprofin@painkiller.example.tld.invalid> - 2013-03-21 03:37 +0000

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