Re: [RFC PATCH v2 0/2] Saving power by cpu evacuation sched_max_capacity_pct=n

Peter Zijlstra
2009-05-13T14:36:56Z

On Wed, 2009-05-13 at 16:35 +0200, Andi Kleen wrote:
> On Wed, May 13, 2009 at 06:41:00PM +0530, Vaidyanathan Srinivasan wrote:
> > * Using sched_mc=3,4,5 to evacuate 1,2,4 cores is completely
> > non-intuitive and broken interface. Ingo wanted to see if we can
> > model a global percentile tunable that would map to core throttling.
>
> I have one request. CPU throttling is already a very well established
> term in the x86 world, refering to thermal throttling when the CPU
> overheats. This is implemented by ACPI and the CPU. It's always
> a very bad thing that should be avoided at all costs.

Its about avoiding that.