i all
I use linux as GiGE router and have 6 NIC on it
Those
days the NIC interrupt takes around 100% CPU but the system is 4G memroy and 8
CPU. I can't see any error packet in this NIC interface too
After I
block the udp, the %CPU drops. but the UDP only takes around 8M in
general
Is
there any chance you have a routing loop problem? when your CPU jumps to 100%
usage, is traffic still passing, and your applications working? (I am also
assuming that all 8CPU's are at 100% usage)
are
you blocking the UDP traffic with iptables on your linux box? if so...maybe
set it to be a log rule instead, then analyze those logs.
as a
side note, when your interrupts are taking 100% CPU...it is called "Live Lock"
(in case you didn't know)
We use UDP traffic for
voice.
Do you have any suggestion ? increase the kernel
parameter?
I
take it that there was no interesting information in 'dmesg' as
well.
Mike