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| author | Alex Shi <alex.shi@intel.com> | 2010-11-16 17:34:02 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-11-18 13:11:43 +0100 |
| commit | b5482cfa1c95a188b3054fa33274806add91bbe5 (patch) | |
| tree | bcd6091faa23ab203ea9f6f4262a466bf3a696a1 /kernel | |
| parent | 55f6561c6941713ab5ae9180525b026dd40b7d14 (diff) | |
| download | blackbird-op-linux-b5482cfa1c95a188b3054fa33274806add91bbe5.tar.gz blackbird-op-linux-b5482cfa1c95a188b3054fa33274806add91bbe5.zip | |
sched: Fix volanomark performance regression
Commit fab4762 triggers excessive idle balancing, causing a ~30% loss in
volanomark throughput. Remove idle balancing throttle reset.
Originally-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Nikhil Rao <ncrao@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1289928732.5169.211.camel@maggy.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched_fair.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 52ab113d8bb9..ba0556dc7c06 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -1758,10 +1758,6 @@ 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; } /* |
