Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763027Ab3DCH2v (ORCPT ); Wed, 3 Apr 2013 03:28:51 -0400 Received: from mga11.intel.com ([192.55.52.93]:63217 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762636Ab3DCH2u (ORCPT ); Wed, 3 Apr 2013 03:28:50 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,399,1363158000"; d="scan'208";a="312844730" Message-ID: <515BDA1B.2040801@intel.com> Date: Wed, 03 Apr 2013 15:28:27 +0800 From: Alex Shi User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130221 Thunderbird/17.0.3 MIME-Version: 1.0 To: Michael Wang CC: mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de, akpm@linux-foundation.org, arjan@linux.intel.com, bp@alien8.de, pjt@google.com, namhyung@kernel.org, efault@gmx.de, morten.rasmussen@arm.com, vincent.guittot@linaro.org, gregkh@linuxfoundation.org, preeti@linux.vnet.ibm.com, viresh.kumar@linaro.org, linux-kernel@vger.kernel.org, len.brown@intel.com, rafael.j.wysocki@intel.com, jkosina@suse.cz, clark.williams@gmail.com, tony.luck@intel.com, keescook@chromium.org, mgorman@suse.de, riel@redhat.com Subject: Re: [patch v3 0/8] sched: use runnable avg in load balance References: <1364873008-3169-1-git-send-email-alex.shi@intel.com> <515A877B.3020908@linux.vnet.ibm.com> <515A9859.6000606@intel.com> <515B97FF.2040409@linux.vnet.ibm.com> <515B9A7A.6030807@intel.com> <515BA0B7.2090906@linux.vnet.ibm.com> <515BAFE6.1020804@intel.com> <515BCA94.6050703@linux.vnet.ibm.com> <515BD1FE.7030901@intel.com> <515BD7DB.6020602@linux.vnet.ibm.com> In-Reply-To: <515BD7DB.6020602@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1025 Lines: 27 On 04/03/2013 03:18 PM, Michael Wang wrote: >> > the following patch include the renamed knob, and you can tune it under >> > /proc/sys/kernel/... to see detailed impact degree. > Could I make the conclusion that the improvement on pgbench was caused > by the new weighted_cpuload()? guess too. > > The burst branch seems to just adopt the load in old world, if reduce > the rate to enter that branch could regain the benefit, then I could > confirm my supposition. > >> > >> > + if (cpu_rq(this_cpu)->avg_idle < sysctl_sched_migration_cost || >> > + cpu_rq(prev_cpu)->avg_idle < sysctl_sched_migration_cost) > It should be 'sysctl_sched_burst_threshold' here, isn't it? anyway, I > will take a try with different rate. Ops, sth wrong in my git operation. -- Thanks Alex -- 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/