Commit: b5482cfa1c95a188b3054fa33274806add91bbe5 upstream Author: Alex Shi <[email protected]> AuthorDate: Tue Nov 16 17:34:02 2010 +0800
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]> --- kernel/sched.c | 4 ---- 1 files changed, 0 insertions(+), 4 deletions(-) diff --git a/kernel/sched.c b/kernel/sched.c index 445f2d1..ffd4f57 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -3326,10 +3326,6 @@ static void pull_task(struct rq *src_rq, struct task_struct *p, 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; } /* -- 1.7.4 _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
