Re: multiprocesor : bridge/router ?

Linux Advanced Routing and Traffic Control

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On Fri, 17 Sep 2004 20:04:09 +0300
raptor <raptor@xxxxxxxxxx> wrote:

> |On Fri, 17 Sep 2004 02:26:51 +0300
> |raptor <raptor@xxxxxxxxxx> wrote:
> |
> |> hi,
> |> 
> |> does someone tried bridge and or router functionality of linux kernel on
> |> multiprocessor system.
> |> Does multiprocessor system increase network performance or give
> |> ability to process higher traffic..
> |> 
> |> What about highest possible troughput someone have achieved ?
> |
> |Your performance is going depend more on the bus speed and type of
> |NIC used. SMP might help but only if you assign the IRQ for each
> |NIC to a different processor. Network performance is more dependant
> |on memory and bus bandwidth than processor (at least with current hardware).
> 
> ]- hmm. you are probably right, I'll have to concentrate on PCI-bus and quality eth-cards . 
> Any recomendation ? what about a combo ethernet cards ?
> . On a SMP machine how is IRQ assigned 
> so that every diiferent netcard is assigned to different CPU.
> 
> 
> PS. It seems that nobody had test the troughput of linux networking..
> If u have a link to such test pls give me a link..
> Some info on which network cards offloads CPU more..
> or any info u can give me on the possible max and sustained 
> throughput on modern x86 computer.

You want to look at Robert Olssen's work http://robur.slu.se/Linux/net-development/
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