Network Performance Ingo's RT-Preempt

I'm running 2.6.11 with Ingo's Preempt patch (realtime-preempt-2.6.11-final-V0.7.40-04). The system is SMP with a broadcom NIC (tg3 driver). I am seeing truly appalling network performance (2-4kbps on a 1gbps network). Is this a known issue? I know this patch is not production ready, what traces/logs do you need/want to be able to debug/fix this?

Thanks,
Tom


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