Messages in this thread | | | From | "lm0re" <> | Subject | Re: how to balance interrupts between 2 CPUs? | Date | Wed, 10 Apr 2002 21:21:14 +0800 |
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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 > > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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