Thanks for the info, I figured it was something like this going on. I may
try refining things to a different server if necessary.
My Ubuntu-Mate desktop time always seems synced, but sudo systemctl status
systemd-timesyncd gives:
systemd-timesyncd.service - Network Time Synchronization
Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; enabled;
vendor preset: enabled)
Drop-In: /lib/systemd/system/systemd-timesyncd.service.d
└─disable-with-time-daemon.conf
Active: inactive (dead)
Condition: start condition failed at Sat 2017-12-09 11:44:12 CST; 5h 24min
ago
ConditionFileIsExecutable=!/usr/sbin/ntpd was not met
Docs: man:systemd-timesyncd.service(8)
Its timekeeping has always been good. It has /etc/ntp.conf with
# Specify one or more NTP servers.
# Use servers from the NTP Pool Project. Approved by Ubuntu Technical Board
# on 2011-02-08 (LP: #104525). See http://www.pool.ntp.org/join.html for
# more information.
pool 0.ubuntu.pool.ntp.org iburst
pool 1.ubuntu.pool.ntp.org iburst
pool 2.ubuntu.pool.ntp.org iburst
pool 3.ubuntu.pool.ntp.org iburst
# Use Ubuntu's ntp server as a fallback.
pool ntp.ubuntu.com
So apparently it tries to run both and ntp wins :)
I don't recall doing anything about its time keeping other than setting the
locale during installation in 2016.
My BBG seems to be either right on or two seconds slow compared to the
others It still seems to be updating every 35 seconds.
Still puzzled. I'll give it more time, and maybe try getting time from a
single server if it doesn't stablize.
On Saturday, December 9, 2017 at 4:07:35 PM UTC-6, Graham wrote:
>
> For wku...
>
>
> pool.ntp.org is not a server.
>
> It is a front end service for a pool of ntp servers, that can be anywhere
> in the world.
> There are hundreds, if not thousands of them in the pool.
> To level the loading on the ntp servers within the pool, you will get
> assigned to a different server for each call to pool.ntp.org.
> To see which server you are actually using, you need to look at the IP
> address of the server, then do a whois lookup.
>
> It is likely that each of your BBB's is running off a different ntp
> server, even though they all called to pool.ntp.org.
>
> But, to get admitted to that pool, you need to be running a full
> implementation of NTP, which is cross synched with at least five other
> servers, and each will likely be less than 10 ms in error from absolute
> time.
> Many these days have their own GPS receiver, so will have time errors less
> than 0.1 ms.
>
> If you want all of your units to use the same server, you will need to
> specify the IP address of the specific server, in that NTP= statement.
>
> Preferably one close to you, with low latency and a symmetric path.
>
> pool.ntp.org is the Global pool.
> If you want to restrict it to something closer, use:
>
> Africa <http://www.pool.ntp.org/zone/africa> — africa.pool.ntp.org (33)
> Antarctica <http://www.pool.ntp.org/zone/antarctica> —
> antarctica.pool.ntp.org (0)
> Asia <http://www.pool.ntp.org/zone/asia> — asia.pool.ntp.org (264)
> Europe <http://www.pool.ntp.org/zone/europe> — europe.pool.ntp.org (2763)
> North America <http://www.pool.ntp.org/zone/north-america> —
> north-america.pool.ntp.org (943)
> Oceania <http://www.pool.ntp.org/zone/oceania> — oceania.pool.ntp.org
> (113)
> South America <http://www.pool.ntp.org/zone/south-america> —
> south-america.pool.ntp.org (48)
>
> --- Graham
>
>
>
>
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