Re: [tip:sched/numa] sched/numa: Introduce sys_numa_{t,m}bind()

From: David Rientjes
Date: Wed May 23 2012 - 20:58:43 EST


On Wed, 23 May 2012, Peter Zijlstra wrote:

> On Tue, 2012-05-22 at 17:00 +0200, Peter Zijlstra wrote:
> > /me goes kick his gray cells some more.
>
> OK, does the below make your machine happy? If not, please share the
> completely topology setup of that thing (lscpu or similar).
>

Same divide by zero. I'd be happy to run a debugging patch if you can
come up with one.

$ grep -E 'processor|core|sibling|physical id|apicid|cpuid' /proc/cpuinfo | sed 's/processor/\nprocessor/'
processor : 0
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 4
initial apicid : 0
cpuid level : 5

processor : 1
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
apicid : 5
initial apicid : 1
cpuid level : 5

processor : 2
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
apicid : 6
initial apicid : 2
cpuid level : 5

processor : 3
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 7
initial apicid : 3
cpuid level : 5

processor : 4
physical id : 1
siblings : 4
core id : 0
cpu cores : 4
apicid : 8
initial apicid : 4
cpuid level : 5

processor : 5
physical id : 1
siblings : 4
core id : 1
cpu cores : 4
apicid : 9
initial apicid : 5
cpuid level : 5

processor : 6
physical id : 1
siblings : 4
core id : 2
cpu cores : 4
apicid : 10
initial apicid : 6
cpuid level : 5

processor : 7
physical id : 1
siblings : 4
core id : 3
cpu cores : 4
apicid : 11
initial apicid : 7
cpuid level : 5

processor : 8
physical id : 2
siblings : 4
core id : 0
cpu cores : 4
apicid : 12
initial apicid : 8
cpuid level : 5

processor : 9
physical id : 2
siblings : 4
core id : 1
cpu cores : 4
apicid : 13
initial apicid : 9
cpuid level : 5

processor : 10
physical id : 2
siblings : 4
core id : 2
cpu cores : 4
apicid : 14
initial apicid : 10
cpuid level : 5

processor : 11
physical id : 2
siblings : 4
core id : 3
cpu cores : 4
apicid : 15
initial apicid : 11
cpuid level : 5

processor : 12
physical id : 3
siblings : 4
core id : 0
cpu cores : 4
apicid : 16
initial apicid : 12
cpuid level : 5

processor : 13
physical id : 3
siblings : 4
core id : 1
cpu cores : 4
apicid : 17
initial apicid : 13
cpuid level : 5

processor : 14
physical id : 3
siblings : 4
core id : 2
cpu cores : 4
apicid : 18
initial apicid : 14
cpuid level : 5

processor : 15
physical id : 3
siblings : 4
core id : 3
cpu cores : 4
apicid : 19
initial apicid : 15
cpuid level : 5
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