Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757205AbaAIUBT (ORCPT ); Thu, 9 Jan 2014 15:01:19 -0500 Received: from mx1.redhat.com ([209.132.183.28]:38683 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756062AbaAIUBH (ORCPT ); Thu, 9 Jan 2014 15:01:07 -0500 Message-ID: <52CEFF97.6000709@redhat.com> Date: Thu, 09 Jan 2014 14:59:19 -0500 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: Mel Gorman , Alex Shi , Ingo Molnar CC: Linus Torvalds , Thomas Gleixner , Andrew Morton , Fengguang Wu , H Peter Anvin , Linux-X86 , Linux-MM , LKML Subject: Re: [PATCH 4/5] x86: mm: Change tlb_flushall_shift for IvyBridge References: <1389278098-27154-1-git-send-email-mgorman@suse.de> <1389278098-27154-5-git-send-email-mgorman@suse.de> In-Reply-To: <1389278098-27154-5-git-send-email-mgorman@suse.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/09/2014 09:34 AM, Mel Gorman wrote: > There was a large performance regression that was bisected to commit 611ae8e3 > (x86/tlb: enable tlb flush range support for x86). This patch simply changes > the default balance point between a local and global flush for IvyBridge. > > In the interest of allowing the tests to be reproduced, this patch was > tested using mmtests 0.15 with the following configurations > > configs/config-global-dhp__tlbflush-performance > configs/config-global-dhp__scheduler-performance > configs/config-global-dhp__network-performance > Based on these results, changing the default for Ivybridge seems > like a logical choice. > > Signed-off-by: Mel Gorman > Reviewed-by: Alex Shi Reviewed-by: Rik van Riel -- 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/