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    SubjectRe: [PATCH v2 2/2] sched/fair: leverage the idle state info when choosing the "idlest" cpu
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    On 09/04/2014 11:32 AM, Nicolas Pitre wrote:
    > The code in find_idlest_cpu() looks for the CPU with the smallest
    > load. However, if multiple CPUs are idle, the first idle CPU is
    > selected irrespective of the depth of its idle state.
    >
    > Among the idle CPUs we should pick the one with with the shallowest
    > idle state, or the latest to have gone idle if all idle CPUs are in
    > the same state. The later applies even when cpuidle is configured
    > out.
    >
    > This patch doesn't cover the following issues:

    The main thing it does not cover is already running tasks that
    get woken up again, since select_idle_sibling() covers everything
    except for newly forked and newly executed tasks.

    I am looking at adding similar logic to select_idle_sibling()

    - --
    All rights reversed
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