Re: x86_64 interrupts handled by CPU0 only

From: Arjan van de Ven (arjanv@redhat.com)
Date: Wed May 07 2003 - 15:46:17 EST

On Wed, 2003-05-07 at 19:02, Will Dinkel wrote:
> Are all interrupts supposed to be handled by CPU0 on x86_64, or is
> something amiss? I'm getting the following on Mandrake Corporate Server
> 2.1:
>
> ---
> [root@lab180 root]# uname -r -v -m -o
> 2.4.19-31mdksmp #1 SMP Thu Apr 17 09:34:46 EDT 2003 x86_64 GNU/Linux
> [root@lab180 root]# cat /proc/interrupts
> CPU0 CPU1
> 0: 447602 0 IO-APIC-edge timer
> 1: 424 0 IO-APIC-edge keyboard
> 2: 0 0 XT-PIC cascade
> 12: 851 0 IO-APIC-edge PS/2 Mouse
> 14: 25038 1 IO-APIC-edge ide0
> 15: 4930 1 IO-APIC-edge ide1
> 19: 0 0 IO-APIC-level usb-ohci, usb-ohci
> 24: 105196 0 IO-APIC-level ioc0, eth0
> 25: 46 0 IO-APIC-level ioc1
> NMI: 2235 3808
> LOC: 447494 447555
> ERR: 0
> MIS: 0
> ---
>
> I see this behavior on systems using either the MSI or Tyan dual-opteron
> boards. I also see it on RedHat's preview x86_64 distribution (kernel
> version 2.4.20-9.2).

please use irqbalanced ;)


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