Re: Question: How to distribute the interrupts over multiple cores?

[Lin Feng]

On 03/25/2013 02:46 PM, Lenky Gao wrote:
>> Do you mean on your old machine the irq will be distributed automatically
>> among the cpus set by smp_affinity?
>>
> 
> Yes. My another machine's interrupts are as follows:
And without irqbalance service? It sounds weird to me..

thanks,
linfeng

> 
> [root@localhost ~]# cat /proc/cpuinfo
> processor	: 0
> vendor_id	: GenuineIntel
> cpu family	: 6
> model		: 23
> model name	: Pentium(R) Dual-Core  CPU      E6700  @ 3.20GHz
> ...
> [root@localhost ~]# echo 3 > /proc/irq/18/smp_affinity
> [root@localhost ~]# cat /proc/irq/18/smp_affinity
> 3
> [root@localhost ~]# cat /proc/interrupts | grep eth2
>   18:        455       458   IO-APIC-fasteoi   eth2
> [root@localhost ~]# cat /proc/interrupts | grep eth2
>   18:        463       467   IO-APIC-fasteoi   eth2
> [root@localhost ~]# cat /proc/interrupts | grep eth2
>   18:        471       476   IO-APIC-fasteoi   eth2
> 
> 
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