[ntp:questions] mtp srver load figures?
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Null at BlackList.Anitech-Systems.invalid
Fri Nov 20 04:50:30 UTC 2009
Christoph Weber-Fahr wrote:
> I'm preparing to build a few ntp servers for a somewhat
> large population of NTP-misbehaving boxes (they top out
> at a 120 sec interval).
> So, to size this right - what kind of request load can I
> safely throw at ntpd on a current Xeon server?
> Is 200 requests per second a problem? What do you calculate?
According to the numbers in <http://www.pool.ntp.org/en/join.html>
Most pool servers get about 5-15 NTP packets per second with
spikes a couple of times a day of 60-120 packets per second.
This is roughly equivalent to 10-15Kbit/sec with spikes of
Also <http://www.pool.ntp.org/en/> How much traffic to expect?
Pool servers can heavily regulate it with the "netspeed"
setting in the server settings on the manage page.
As a rule of thumb you’ll get 1/3 query a second "per megabit";
with peaks of about 1 to 1.5 queries per second per megabit
at the top of each hour.
* Each packet is only about 50 bytes, so this is very little
If you set the netspeed to for example 1 mbit (the default)
you’ll get very little traffic but still help tens of
thousands of users a day set their time.
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