how to bind single interface with more than one cpu

Benjamin benjo11111 at
Wed Oct 19 16:15:42 UTC 2011


I tried to change value in interface interrupt's smp_afinity value

as per my understanding , smp_afinity values

1 for cpu0
2 for cpu1
4 for cpu2
  8 for cpu3
  that way cpu0+cpu1 = 1 + 2 = 3

so i set different values for test .but each time it only binds with 
single cpu from cpu0 / cpu1 / cpu2 or cpu3.

i also start cpuspeed service and irqbalance --oneshot.

But same result.i am not able to use  more than 1 cpu for single interface.

> On 10/19/2011 11:15 AM, Benjamin wrote:
>>     Hi,
>> I am using fedora 15 for application server.That applicaton is very
>> loaded in network and we have good h/w which having 4 core cpu and
>> currently 1 lan interface are using.So now i want to bind that interface
>> with more than one cpu to gain more performance and more throughput.
>> I tried to do it by smp_afinity, but i can't. so i need advice and help.
>> Is there anything required from kernel side.? any parameter or any thing
>> which need to enable in kernel.?
> When you say you tried to do it by smp_afinity, what exactly did you do?
> Mike

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