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> > Yes IP is best-effort. But this argument cant explain why IP on linux works > > better if we disable SMP on linux... > > It has nothing to do with SMP. The lazy locking dropping packets can happen > on UP kernels too in extreme cases. Also with preempt. > Well, I too noticed that binding NIC IRQS one one CPU echo 1 > /proc/irq/18/smp_affinity helps a lot in normal cases. Some of us want SMP machine because application needs a lot of CPU, but we also need to not drop frames to save the limited network bandwith. Thanks - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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