From: Ingo Molnar Date: Mon, 22 Sep 2008 14:29:00 +0000 (+0200) Subject: sched: turn off WAKEUP_OVERLAP X-Git-Tag: v2.6.28-rc1~725^2~2^2~14 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=f681bbd656b01439be904250a1581ca9c27505a1;p=linux-2.6-omap-h63xx.git sched: turn off WAKEUP_OVERLAP WAKEUP_OVERLAP is not a winner on a 16way box, running psql+sysbench: .27-rc7-NO_WAKEUP_OVERLAP .27-rc7-WAKEUP_OVERLAP ------------------------------------------------- 1: 694 811 +14.39% 2: 1454 1427 -1.86% 4: 3017 3070 +1.70% 8: 5694 5808 +1.96% 16: 10592 10612 +0.19% 32: 9693 9647 -0.48% 64: 8507 8262 -2.97% 128: 8402 7087 -18.55% 256: 8419 5124 -64.30% 512: 7990 3671 -117.62% ------------------------------------------------- SUM: 64466 55524 -16.11% ... so turn it off by default. Signed-off-by: Ingo Molnar --- diff --git a/kernel/sched_features.h b/kernel/sched_features.h index bf027a7accf..7c9e8f4a049 100644 --- a/kernel/sched_features.h +++ b/kernel/sched_features.h @@ -11,4 +11,4 @@ SCHED_FEAT(ASYM_GRAN, 1) SCHED_FEAT(LB_BIAS, 1) SCHED_FEAT(LB_WAKEUP_UPDATE, 1) SCHED_FEAT(ASYM_EFF_LOAD, 1) -SCHED_FEAT(WAKEUP_OVERLAP, 1) +SCHED_FEAT(WAKEUP_OVERLAP, 0)