Re: netfilter queue throughput slowdown

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Le mercredi 29 juin 2011 à 11:55 +0200, Anders Nilsson Plymoth a écrit :
> Hi Eric,
> 
> Thanks for your reply.
> Yes, I am sure I set the verdict, as right now I do it on all packets
> by default.
> I will try upgrading and see if it works. Do you know if commit
> c463ac972315a0 solves the problem you mentioned?

No, it doesnt solve the problem, only make things faster.

But if some packets are never dequeued (because something is wrong with
your program, failing to give verdict), they stay forever in the list
and each dequeue is slower since it has to go past these packets...

2.6.37 also contains commit 29b4433d991c88d86ca48a4c1cc33c671475be4b
(net: percpu net_device refcount) which helps a lot netfilter
queue/dequeue if your machine is SMP.



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