From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756711Ab3INPzx (ORCPT ); Sat, 14 Sep 2013 11:55:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45595 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756321Ab3INPzv (ORCPT ); Sat, 14 Sep 2013 11:55:51 -0400 Message-ID: <523486E4.3000206@redhat.com> Date: Sat, 14 Sep 2013 11:55:16 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 MIME-Version: 1.0 To: dhillf@sina.com CC: Mel Gorman , Andrea Arcangeli , linux-kernel , linux-mm , Hillf Danton Subject: Re: [RFC PATCH] mm: numa: adjust hinting fault record if page is migrated References: <20130914115335.3AA33428001@webmail.sinamail.sina.com.cn> In-Reply-To: <20130914115335.3AA33428001@webmail.sinamail.sina.com.cn> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/14/2013 07:53 AM, Hillf Danton wrote: > After page A on source node is migrated to page B on target node, hinting > fault is recorded on the target node for B. On the source node there is > another record for A, since a two-stage filter is used when migrating pages. > > Page A is no longer used after migration, so we have to erase its record. What kind of performance changes have you observed with this patch? What benchmarks have you run, and on what kind of systems? -- All rights reversed