> > 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
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This archive was generated by hypermail 2b29 : Sun Feb 23 2003 - 22:00:28 EST