> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/