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

[Lenky Gao]

> 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:

[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


-- 
Regards,

Lenky
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