:: Re: [DNG] ntp setup
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Lähettäjä: Olaf Meeuwissen
Päiväys:  
Vastaanottaja: Rick Moen
Kopio: dng
Aihe: Re: [DNG] ntp setup
Hi Rick,

Rick Moen writes:

> Quoting Olaf Meeuwissen (paddy-hack@???):
>
>> I think it's fair to point out that systemd-timesyncd only promises
>> Simple NTP (SNTP). How good a job it does of that is another matter
>> but at least it explains some of the "quirks" you mention below.
>
> Put that way, fair point. _But_, the larger context is that a
> systematically better job of time sync, using better code and also (in
> the case of ntimed-client), _smaller_ code, can be performed instead,
> gaining all the advantages of a real NTP client.


I had no issues with the larger context so refrained from commenting on
that.

> Or, to put it a different way, with several excellent genuine NTP
> clients to choose among, I deny the existence of a compelling use-case
> for any SNTP client, let alone one that's more than a little slipshod.
> (systemd-timed's security history, which I didn't get into, is less than
> reassuring.)


Fully agree. When I looked into timing issues on a Debian server I
still maintain, I noticed that systemd-timesyncd only promised SNTP and
when I read up on that wondered why anyone in their sane mind would want
to use that instead of NTP.

> The SNTP protocol is what Windows users settle for, because that's what
> they're offered by defaul, and mostly they don't know that they're
> missing out. On Linux, we don't need to settle.


We definitely don't and the large collection of alternatives, in terms
of distributions as well as programs, attests to that :-)

Hope this helps,
--
Olaf Meeuwissen, LPIC-2            FSF Associate Member since 2004-01-27
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