Messages in this thread Patch in this message | | | Date | Wed, 20 Aug 2008 12:51:41 +0200 | From | Ingo Molnar <> | Subject | Re: VolanoMark regression with 2.6.27-rc1 |
| |
* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> And I must admit to having overlooked the effect on wake_affine.. > > Chris, could you see the effect of this on smp group fairness?
applied your commit below to tip/sched/urgent, thanks.
Ingo
--------------> From 939387c3a6141ec6aefc7acd40f8b186781bb098 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra <a.p.zijlstra@chello.nl> Date: Wed, 20 Aug 2008 12:44:55 +0200 Subject: [PATCH] sched: enable LB_BIAS by default
Yanmin reported a significant regression on his 16-core machine due to:
commit 93b75217df39e6d75889cc6f8050343286aff4a5 Author: Peter Zijlstra <a.p.zijlstra@chello.nl> Date: Fri Jun 27 13:41:33 2008 +0200
Flip back to the old behaviour.
Reported-by: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu> --- kernel/sched_features.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/sched_features.h b/kernel/sched_features.h index 862b06b..9353ca7 100644 --- a/kernel/sched_features.h +++ b/kernel/sched_features.h @@ -8,6 +8,6 @@ SCHED_FEAT(SYNC_WAKEUPS, 1) SCHED_FEAT(HRTICK, 1) SCHED_FEAT(DOUBLE_TICK, 0) SCHED_FEAT(ASYM_GRAN, 1) -SCHED_FEAT(LB_BIAS, 0) +SCHED_FEAT(LB_BIAS, 1) SCHED_FEAT(LB_WAKEUP_UPDATE, 1) SCHED_FEAT(ASYM_EFF_LOAD, 1)
| |