Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755549AbYHTK5U (ORCPT ); Wed, 20 Aug 2008 06:57:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752374AbYHTK5L (ORCPT ); Wed, 20 Aug 2008 06:57:11 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:56587 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752298AbYHTK5K (ORCPT ); Wed, 20 Aug 2008 06:57:10 -0400 Date: Wed, 20 Aug 2008 12:51:41 +0200 From: Ingo Molnar To: Peter Zijlstra Cc: "Zhang, Yanmin" , Dhaval Giani , LKML , Srivatsa Vaddagiri , Aneesh Kumar KV , Balbir Singh , Chris Friesen Subject: Re: VolanoMark regression with 2.6.27-rc1 Message-ID: <20080820105141.GA18226@elte.hu> References: <20080804070508.GA4028@linux.vnet.ibm.com> <1217833939.9016.47.camel@twins> <1912217169.25608.228.camel@ymzhang> <1218180605.8625.64.camel@twins> <20080811185008.GA29291@linux.vnet.ibm.com> <1912726331.25608.235.camel@ymzhang> <20080817115035.GA32223@linux.vnet.ibm.com> <20080818052155.GA5063@linux.vnet.ibm.com> <1219217089.8781.27.camel@ymzhang> <1219218089.10800.404.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1219218089.10800.404.camel@twins> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1600 Lines: 49 * Peter Zijlstra 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 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 Date: Fri Jun 27 13:41:33 2008 +0200 Flip back to the old behaviour. Reported-by: "Zhang, Yanmin" Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- 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) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/