On 2011-06-15 22:40, Jonathan Gray wrote: > > Yes this seems low indeed. You could try use rdomains and route exec > with a cable between the two ports to make packets go over the interfaces > if you don't have another host with 10G interfaces.
I didn't get that far. When connecting the two ports to each other (tried with a couple of TP cables) I only get 1000baseT full-duplex on ix0 and ix1. > > If you've had ppb problems with em I'd imagine they would affect ix as well > if it is sitting behind the same ppb. I disabled the ppb hotplug interrupt in ppb.c as Claudio mentioned in "Performance degradation after upgrade" and ran the same tests again. This time it got up to 932 Mbit/s (close to theoretical maximum), but the CPU usage was 100% intrs. However, the interfaces only generated around 2000 intrs/s each (compared to 13000 in my last test). I will not have more time to do additional testing in a while as i'm off for vacation, but I hope my tests so far can give you some insight. Thanks, Peter
