On Tue, 11 Feb 2014 17:43:31 +0100 Fabian Wenk <[email protected]> wrote: > I do not know how you do measure the requests. For my graphs [1] > I do measure the packets with the 'packets received' and 'packets > sent' from the 'ntpdc -c sysstats -c iostats' output.
The data for the graph is just tcpdump output, something like tcpdump -p -D in -ni em0 -l 'udp port 123' > ntp.log run for one minute then "wc -l ntp.log" and add that to the rrd. It's a bit of a hack I guess, but it gets the job done and the ntpd I run does not keep counters like that. Thanks for sharing your graphs. [email protected] wrote: > [...] fixed time of day to sync with the pool instead of using a random > starttime or interval. So these clients all rush in at nearly the same > time. But 7000 request per minute isn't something to worry about, no? That should explain what I'm seeing. And no, 7000 requests (or queries) per minute is definitely not a problem, I just like to know what's going on ;-) As for the icmp unreachable, I thought it was something like NAT or a firewall not allowing return traffic, but I really wanted to make sure I've not misconfigured anything on my side (whatever that might be). Some are probably also spoofed addresses but that's just fine. It's on the Internet after all ;-) Thanks again guys. Cheers, Thomas. _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool
