From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753990Ab1LUMwm (ORCPT ); Wed, 21 Dec 2011 07:52:42 -0500 Received: from casper.infradead.org ([85.118.1.10]:44970 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753331Ab1LUMwl convert rfc822-to-8bit (ORCPT ); Wed, 21 Dec 2011 07:52:41 -0500 Message-ID: <1324471944.10752.8.camel@twins> Subject: Re: [tip:sched/urgent] sched: Fix select_idle_sibling() regression in selecting an idle SMT sibling From: Peter Zijlstra To: alex shi Cc: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, efault@gmx.de, alex.shi@intel.com, suresh.b.siddha@intel.com, tglx@linutronix.de, mingo@elte.hu, linux-tip-commits@vger.kernel.org Date: Wed, 21 Dec 2011 13:52:24 +0100 In-Reply-To: References: <1323978421.1984.244.camel@sbsiddha-desk.sc.intel.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Mailer: Evolution 3.2.1- Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2011-12-21 at 20:33 +0800, alex shi wrote: > > Fix it. Slightly bigger patch of cleaning all these goto's etc > > is queued up for the next release. > > > > Even with this fix, the loopback netperf testing TCP-RR, still have > about 5% regresion on our 2 socket * 8 cores SNB machine. > which is your patchset includes all cleaning? wondering if that is helpful. Sorry, but that question fails to parse here. What were you asking?