I think your got something wrong, I've a 2 cpus box, all is ok,see below:
[root@info /proc]# cat interrupts
CPU0 CPU1
0: 1245694 1389471 IO-APIC-edge timer
1: 157 121 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
8: 0 1 IO-APIC-edge rtc
10: 10685 10958 IO-APIC-level usb-uhci, e100
14: 36926 50216 IO-APIC-edge ide0
15: 1 1 IO-APIC-edge ide1
NMI: 0 0
LOC: 2635076 2635074
ERR: 0
MIS: 0
Read the IRQ-affinity.txt which should usual be at
/usr/src/linux/Documentation, and change the configuration maybe your can
specify cpu1 processes the IRQ 18. And check the result.
lm0re
----- Original Message -----
From: <zxj@water.pku.edu.cn>
To: <linux-kernel@vger.kernel.org>
Sent: Wednesday, April 10, 2002 8:23 PM
Subject: how to balance interrupts between 2 CPUs?
> Hello
>
> I am using two Intel Giga NICs in a DELL PowerEdge 4600
> with 2 Intel XEON 1.8GHz CPUs.
> The matherboard is ServerWorks GC-HE.
> The OS is RedHat 7.2, and the release of kernel is "2.4.7-10smp".
>
> The CPU0 has very heavy interrupt traffic,
> you can see the following information:
> >>>>>
> [root@giga root]# cat /proc/interrupts
> CPU0 CPU1
> 0: 395117 0 IO-APIC-edge timer
> 1: 653 0 IO-APIC-edge keyboard
> 2: 0 0 XT-PIC cascade
> 8: 1 0 IO-APIC-edge rtc
> 12: 23 0 IO-APIC-edge PS/2 Mouse
> 14: 2 0 IO-APIC-edge ide0
> 18: 30 0 IO-APIC-level aic7xxx
> 19: 86013 0 IO-APIC-level eth0
> 20: 10394 0 IO-APIC-level aic7xxx
> 21: 30 0 IO-APIC-level aic7xxx
> 27: 5480873 0 IO-APIC-level e1000
> 39: 164889152 0 IO-APIC-level e1000
> NMI: 0 0
> LOC: 395013 395012
> ERR: 0
> MIS: 0
> >>>>>
>
> The kernel's SMP option is enable, but the CPU1 is always idle.
> How to balance the interrpupts between two CPUs?
> If you are convenient, please give me some advice quickly.
>
> Thank you!
>
> Best regard
>
>
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This archive was generated by hypermail 2b29 : Mon Apr 15 2002 - 22:00:15 EST