2.6.32-longterm review patch. If anyone has any objections, please let us know.
------------------ Commit: b5482cfa1c95a188b3054fa33274806add91bbe5 upstream Commit fab4762 triggers excessive idle balancing, causing a ~30% loss in volanomark throughput. Remove idle balancing throttle reset. Originally-by: Alex Shi <[email protected]> Signed-off-by: Mike Galbraith <[email protected]> Acked-by: Nikhil Rao <[email protected]> Signed-off-by: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Mike Galbraith <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- kernel/sched.c | 4 ---- 1 file changed, 4 deletions(-) --- a/kernel/sched.c +++ b/kernel/sched.c @@ -3326,10 +3326,6 @@ static void pull_task(struct rq *src_rq, set_task_cpu(p, this_cpu); activate_task(this_rq, p, 0); check_preempt_curr(this_rq, p, 0); - - /* re-arm NEWIDLE balancing when moving tasks */ - src_rq->avg_idle = this_rq->avg_idle = 2*sysctl_sched_migration_cost; - this_rq->idle_stamp = 0; } /* _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
