Re: ***SPAM*** Re: Need new way to improve SMP scalability for network router

Linux Advanced Routing and Traffic Control

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> > and are not used for ether routeing or shaping
> > Is there a way to split work from two NICs on 4 CPUs ?

Put in two more nics and assign new interrupts to virtual processors.
It should work.

> What do you expect to get? There are no 4 real CPUs. The only benefit
> that the HT technology has is when you need very fast switching
> between process/threads ... in this case the kernel should be prety
> good at it, and won't see any benefit from HT.

In fact you CAN use virtual processors made available by HT to assign
interrupts to them. This solution works well. I've seen P4-HT hauling
500.000 packets per second, with BGP and 70% utilisation.

cheers,
Marek Kierdelewicz
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