Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755006Ab3C0Itn (ORCPT ); Wed, 27 Mar 2013 04:49:43 -0400 Received: from 173-166-109-252-newengland.hfc.comcastbusiness.net ([173.166.109.252]:39721 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754953Ab3C0Itl (ORCPT ); Wed, 27 Mar 2013 04:49:41 -0400 Message-ID: <1364374174.5053.59.camel@laptop> Subject: Re: [RFC PATCH v3 5/6] sched: pack the idle load balance From: Peter Zijlstra To: Alex Shi Cc: Vincent Guittot , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linaro-kernel@lists.linaro.org, mingo@kernel.org, linux@arm.linux.org.uk, pjt@google.com, santosh.shilimkar@ti.com, morten.rasmussen@arm.com, chander.kashyap@linaro.org, cmetcalf@tilera.com, tony.luck@intel.com, preeti@linux.vnet.ibm.com, paulmck@linux.vnet.ibm.com, tglx@linutronix.de, len.brown@intel.com, arjan@linux.intel.com, amit.kucheria@linaro.org, corbet@lwn.net, Venkatesh Pallipadi , Suresh Siddha Date: Wed, 27 Mar 2013 09:49:34 +0100 In-Reply-To: <51527C17.3070901@intel.com> References: <1363955155-18382-1-git-send-email-vincent.guittot@linaro.org> <1363955155-18382-6-git-send-email-vincent.guittot@linaro.org> <1364302359.5053.21.camel@laptop> <1364308932.5053.46.camel@laptop> <51527C17.3070901@intel.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.6.2-0ubuntu0.1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 606 Lines: 16 On Wed, 2013-03-27 at 12:56 +0800, Alex Shi wrote: > Just one buddy to pack tasks for whole level cpus definitely has > scalability problem. Right, but note we already have this scalability problem in the form of the ILB. Some people were working on sorting that but then someone changed jobs and I think it fell in some deep and dark crack. Venki, Suresh? -- 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/