On Tuesday 06 February 2007 19:09, you wrote:
> On Tue, 2007-02-06 at 18:32 +0100, Marc Donner wrote:
> > Hi @all
> >
> > we have detected some problems on our live systems and so i have build a
> > test setup in our lab as follow:
> >
> > 3 Core 2 duo servers, each with 2 CPUs, with GE interfaces. 2 of them
> > are only for generating network traffic. the 3rd server is the one i want
> > to test. it is connected over two GE links to the other servers. the
> > testserver is configured as an ip router. running kernel 2.6.20.
> >
> > now if i let traffic flow over the box, about 600Mbit/s and about 120k
> > packets/s all seems to be ok. the load is balanced over all cpus. if now
> > insert some iptables rules, about 500, the softirq load increases, but
> > all seems to be ok. now i insert some rules more, and suddenly 1 CPU is
> > 100% loaded and the other ones are 99% idle. the load toggles now between
> > the cpus in intervals.
>
> I wonder if you are using irqbalance.. if not you probably want to...
> (this should at least split it over 2 cpus)
>
> see http://www.irqbalance.org to get irqbalance
I now have tried irqloadbalance, but the same problem.
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