Messages in this thread | | | Date | Mon, 11 Nov 2013 17:43:04 -0500 (EST) | From | Nicolas Pitre <> | Subject | Re: [RFC][PATCH v5 00/14] sched: packing tasks |
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On Mon, 11 Nov 2013, Arjan van de Ven wrote:
> On 11/11/2013 10:31 AM, Catalin Marinas wrote: > > I agree, we can't rely on the requested C-state but the_actual_ state > > and this means querying the hardware driver. Can we abstract this via > > some interface which provides the cost of waking up a CPU? This could > > take into account the state of the other CPUs in the cluster and the > > scheduler is simply concerned with the wake-up costs. > > can you even query this without actually waking up the cpu and asking ???
On those systems we're interested in we sure can.
Nicolas
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