Hello,
We seem to have a problem with multi-cast packets, our develop team was testing some kind of load balancer which is
causing about 100 packets a second to be sent out continuously:
05:35:44.864029 IP X.X.X.9128 > 230.0.0.1.9128: UDP, length: 1000
So this drives up the network card IRQ request I believe using anywhere from 10%-80% of the CPU:
4 root 19 19 0 0 0 SWN 17.1 0.0 225:28 1 ksoftirqd_CPU1
3 root 19 19 0 0 0 SWN 14.5 0.0 228:31 0 ksoftirqd_CPU0
So I thought about adding in a iptables rule to block all the traffic but it is not working. I have added the following
rules with out effect:
iptables -I INPUT -i eth1 -s X.X.X.X -j DROP
iptables -I FORWARD -i eth1 -s X.X.X.X -j DROP
I never see the byte counters increment at all .. they are staying at zero ??
--
Michael Gale
