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SubjectRe: [PATCH v3 04/10] sched/fair: rework load_balance
On Thu, Sep 19, 2019 at 09:33:35AM +0200, Vincent Guittot wrote:
> + if (busiest->group_type == group_asym_packing) {
> + /*
> + * In case of asym capacity, we will try to migrate all load to
> + * the preferred CPU.
> + */
> + env->balance_type = migrate_load;
> env->imbalance = busiest->group_load;
> return;
> }

I was a bit surprised with this; I sorta expected a migrate_task,1 here.

The asym_packing thing has always been a nr_running issue to me. If
there is something to run, we should run on as many siblings/cores as
possible, but preferably the 'highest' ranked siblings/cores.

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