smp_affinity and mask understanding

[Gilboa Davara]

On Thursday, August 18, 2011, Dan Track <dan.track at gmail.com> wrote:
> Hi,
>
> I've been given a mask of "4040" to set as the smp_affinity for the
> eth0 (irq 83),eth1 (irq 91), eth6 (irq 99) and eth8 (irq 131) cards in
> my box. I'm struggling to understand how the mask "4040" relates to
> cpu i.e. the range of cpus I have is CPU0-CPU15 in /proc/interrupts.
> Can someone please describe the process to map this value to a
> processor?
>
> Currently I have 16 processors i.e. 4 cores on each cpu.
>
> Thanks for your help.
>
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