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    SubjectRe: [patch v5 01/15] sched: set initial value for runnable avg of sched entities.
    On 02/18/2013 04:28 PM, Joonsoo Kim wrote:
    > On Mon, Feb 18, 2013 at 01:07:28PM +0800, Alex Shi wrote:
    >> > We need initialize the se.avg.{decay_count, load_avg_contrib} to zero
    >> > after a new task forked.
    >> > Otherwise random values of above variables cause mess when do new task
    > I think that these are not random values. In arch_dup_task_struct(),
    > we do '*dst = *src', so, these values come from parent process. If we use
    > these value appropriately, we can anticipate child process' load easily.
    > So to initialize the load_avg_contrib to zero is not good idea for me.

    Um, for a new forked task, calling them random value is appropriate,
    since uncertain value of decay_count make random behaviour in
    enqueue_entity_load_avg().
    And many comments said new forked task need not follow parent's
    utilisations, like what's you claimed for exec.

    --
    Thanks Alex


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