diff options
| author | Alex Shi <alex.shi@intel.com> | 2011-02-10 10:23:29 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-17 15:37:29 -0800 |
| commit | 82dd2a0c715ff88660278a3cb8a2d0efa866e234 (patch) | |
| tree | 5958aa08866c92350ff429e6890cc46a4eab6016 /kernel | |
| parent | 134f7feec8110044202aa6776f3b700022fe0213 (diff) | |
sched: Fix volanomark performance regression
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 <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>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index 445f2d1101fc..ffd4f574008f 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; } /* |