Re: SMP P4 APIC/interrupt balancing

[Ingo Molnar]

On Wed, 17 Apr 2002, James Bourne wrote:

> After Ingo forwarded me his original patch (I found his patch via a web
> based medium, which had converted all of the left shifts to compares,
> and now I'm very glad it didn't boot...) and the system is booted and is
> balancing most of the interrupts at least.  Here's the current output of
> /proc/interrupts
> 
> brynhild:bash$ cat /proc/interrupts 
>            CPU0       CPU1       
>   0:     171414          0    IO-APIC-edge  timer
>   1:          3          2    IO-APIC-edge  keyboard
>   2:          0          0          XT-PIC  cascade
>   8:          1          0    IO-APIC-edge  rtc
>  18:          8          7   IO-APIC-level  aic7xxx
>  19:      13566      12799   IO-APIC-level  eth0
>  20:          9          7   IO-APIC-level  aic7xxx
>  21:          9          7   IO-APIC-level  aic7xxx
>  27:       1572       5371   IO-APIC-level  megaraid
> NMI:          0          0 
> LOC:     171315     171251 
> ERR:          0
> MIS:          0

it's looking good.

> So, the timer isn't being balanced still, others are (is there a
> specific case in your patch for irq 0 (< 1)?  I couldn't see it but it
> almost looks as though it's being missed..)

it's a separate bug, solved by a separate patch.

	Ingo