Quoting Miroslav Lichvar <[email protected]>:
On Tue, Jan 03, 2017 at 02:54:17PM +0100, Jan-Philipp Benecke wrote:
I wonder if it's specific to the AU zone or if it's more widespread?
My server in the AU zone has also a peaks every few hours.
I suspect in all zones there are spikes as ntpdate in cron seems to be
a popular solution for timekeeping :). There seems to be minute
spikes, hourly spikes and daily spikes. I guess the frequency of these
spikes depends on the "net speed" setting of the server relative to
all others. Here are some graphs from the CZ and IT zones.
http://i.imgur.com/8wXpUwm.png
http://i.imgur.com/AwqdLpZ.png
Here's a few hours of data from Dec 22 of two popular NTP client
fingerprints, ntpd and ntpdate:
https://dan.drown.org/ntp/client-types-ntpdate.png
The times on the x axis are in GMT, so 05:00 is US/Eastern midnight.
The largest ntpdate spike is at 08:00, US/Pacific midnight.
This server is in the US zone.
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