Re: hard crash on leap second
I wrote:
> Debian has time servers:
>
> 0.debian.pool.ntp.org
> 1.debian.pool.ntp.org
> 2.debian.pool.ntp.org
> 3.debian.pool.ntp.org
Bob Cox writes:
> These are all aliases for 0.pool.ntp.org, 1.pool.ntp.org and so on.
That is how Debian and ntp.org have set it up. It could change. See
<http://www.pool.ntp.org/vendors.html>.
> It's probably best to use servers as close to you as possible...
Unless you have unusual requirements (you'll know) it really doesn't
matter. It's just a few UDP packets per hour and just about any server
anywhere in the world will get you within 100ms.
> John - in your case it looks like your ISP is CenturyTel and they appear
> to have a timeserver running on ntp0.centurytel.net...
I prefer to use reliable sources. Also, as Chrony maintainer I feel that I
should use my default configuration as much as possible.
> It seems that ntp4.ja.net is preferred to ntp0.zen.co.uk despite the
> longer delay, presumably because it's a stratum 1 server?
Look at the jitter. The algorithm considers more than just the stratum and
the round-trip delay.
--
John Hasler
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