From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f197.google.com (mail-qk0-f197.google.com [209.85.220.197]) by kanga.kvack.org (Postfix) with ESMTP id AE229280271 for ; Fri, 5 Jan 2018 04:20:19 -0500 (EST) Received: by mail-qk0-f197.google.com with SMTP id r188so2817036qke.21 for ; Fri, 05 Jan 2018 01:20:19 -0800 (PST) Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com. [148.163.158.5]) by mx.google.com with ESMTPS id x22si4490156qtc.143.2018.01.05.01.20.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 05 Jan 2018 01:20:19 -0800 (PST) Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id w059J9jq042950 for ; Fri, 5 Jan 2018 04:20:18 -0500 Received: from e06smtp11.uk.ibm.com (e06smtp11.uk.ibm.com [195.75.94.107]) by mx0b-001b2d01.pphosted.com with ESMTP id 2fa3ngqda1-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Fri, 05 Jan 2018 04:20:18 -0500 Received: from localhost by e06smtp11.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 5 Jan 2018 09:20:16 -0000 Subject: Re: [PATCH 1/3] mm, numa: rework do_pages_move References: <20180103082555.14592-1-mhocko@kernel.org> <20180103082555.14592-2-mhocko@kernel.org> <20180105091443.GJ2801@dhcp22.suse.cz> From: Anshuman Khandual Date: Fri, 5 Jan 2018 14:50:04 +0530 MIME-Version: 1.0 In-Reply-To: <20180105091443.GJ2801@dhcp22.suse.cz> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Message-Id: Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko , Anshuman Khandual Cc: Andrew Morton , Zi Yan , Naoya Horiguchi , "Kirill A. Shutemov" , Vlastimil Babka , Andrea Reale , linux-mm@kvack.org, LKML On 01/05/2018 02:44 PM, Michal Hocko wrote: > On Fri 05-01-18 09:22:22, Anshuman Khandual wrote: > [...] >> Hi Michal, >> >> After slightly modifying your test case (like fixing the page size for >> powerpc and just doing simple migration from node 0 to 8 instead of the >> interleaving), I tried to measure the migration speed with and without >> the patches on mainline. Its interesting.... >> >> 10000 pages | 100000 pages >> -------------------------- >> Mainline 165 ms 1674 ms >> Mainline + first patch (move_pages) 191 ms 1952 ms >> Mainline + all three patches 146 ms 1469 ms >> >> Though overall it gives performance improvement, some how it slows >> down migration after the first patch. Will look into this further. > > What are you measuring actually? All pages migrated to the same node? The mount of time move_pages() system call took to move these many pages from node 0 to node 8. Yeah they migrated to the same node. > Do you have any profiles? How stable are the results? No, are you referring to perf record kind profile ? Results were repeating. -- 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