From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx191.postini.com [74.125.245.191]) by kanga.kvack.org (Postfix) with SMTP id CFA686B0078 for ; Sat, 14 Sep 2013 21:11:26 -0400 (EDT) Received: by mail-lb0-f181.google.com with SMTP id u14so3210019lbd.12 for ; Sat, 14 Sep 2013 18:11:24 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <523486E4.3000206@redhat.com> References: <20130914115335.3AA33428001@webmail.sinamail.sina.com.cn> <523486E4.3000206@redhat.com> Date: Sun, 15 Sep 2013 09:11:24 +0800 Message-ID: Subject: Re: [RFC PATCH] mm: numa: adjust hinting fault record if page is migrated From: Hillf Danton Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: Rik van Riel Cc: dhillf@sina.com, Mel Gorman , Andrea Arcangeli , linux-kernel , linux-mm Hello Rik On Sat, Sep 14, 2013 at 11:55 PM, Rik van Riel wrote: > 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? > Due to no NUMA box, I can not answer you now. I will try best to borrow one next Monday. Thanks Hillf -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org