Karel Sandler wrote:
From: "Ask Bjørn Hansen" <[EMAIL PROTECTED]>
On Jul 17, 2006, at 4:57 PM, Karel Sandler wrote:
An average load from the pool is low (~7rps for my S2) but also
highly non-uniform.
Yes, that's another TODO item.
I'm surprised by your numbers though. I have a server that's in the
pool.ntp.org zone constantly and it's getting less than 1000rps (or
it was last I was looking...)
The numbers mentioned on the pool pages are true assuming a ~5 minute
average is used. I was curious about a structure of this "standard"
peaks. A few examples with 1 minute average or even 1 second average are
located here: http://lx.ujf.cas.cz/ntp-lx/spikes . The utmost I've seen
so far - 1080 requests during one single second. Such extrema occur
sometimes but always precisely at a full hour, probably due to a large
number of ntpdate or sntp users with their periodic jobs.
For what it's worth, I plot the average number of clients and number of
requests per second for my S2 server (which is in the global pool) at
http://www.febo.com/time-freq/ntp/stats/clients/index.html. The data
comes from Wayne Schlitt's ntp_scripts package. My average
requests/second hovers a little below 10, with spikes from 80 to 100 for
the hours when I'm in the DNS. My average number of clients runs from
2000-2500, with spikes up beyond 5000 when I'm in the DNS.
John
_______________________________________________
timekeepers mailing list
[email protected]
https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
