From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-f71.google.com (mail-ed1-f71.google.com [209.85.208.71]) by kanga.kvack.org (Postfix) with ESMTP id 176536B0266 for ; Wed, 3 Oct 2018 09:21:59 -0400 (EDT) Received: by mail-ed1-f71.google.com with SMTP id c26-v6so3183330eda.7 for ; Wed, 03 Oct 2018 06:21:59 -0700 (PDT) Received: from outbound-smtp12.blacknight.com (outbound-smtp12.blacknight.com. [46.22.139.17]) by mx.google.com with ESMTPS id t21-v6si1012882ejf.152.2018.10.03.06.21.57 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 03 Oct 2018 06:21:57 -0700 (PDT) Received: from mail.blacknight.com (pemlinmail05.blacknight.ie [81.17.254.26]) by outbound-smtp12.blacknight.com (Postfix) with ESMTPS id 502EE1C1EFE for ; Wed, 3 Oct 2018 14:21:57 +0100 (IST) Date: Wed, 3 Oct 2018 14:21:55 +0100 From: Mel Gorman Subject: Re: [PATCH 2/2] mm, numa: Migrate pages to local nodes quicker early in the lifetime of a task Message-ID: <20181003132155.GD7003@techsingularity.net> References: <20181001100525.29789-1-mgorman@techsingularity.net> <20181001100525.29789-3-mgorman@techsingularity.net> <20181002124149.GB4593@linux.vnet.ibm.com> <20181002135459.GA7003@techsingularity.net> <20181002173005.GD4593@linux.vnet.ibm.com> <20181003130741.GA4488@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <20181003130741.GA4488@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Srikar Dronamraju Cc: Peter Zijlstra , Ingo Molnar , Jirka Hladky , Rik van Riel , LKML , Linux-MM On Wed, Oct 03, 2018 at 06:37:41PM +0530, Srikar Dronamraju wrote: > * Srikar Dronamraju [2018-10-02 23:00:05]: > > > I will try to get a DayTrader run in a day or two. There JVM and db threads > > act on the same memory, I presume it might show some insights. > > I ran 2 runs of daytrader 7 with and without patch on a 2 node power9 > PowerNv box. > https://github.com/WASdev/sample.daytrader7 > In each run, has 8 JVMs. > > Throughputs (Higher are better) > Without patch 19216.8 18900.7 Average: 19058.75 > With patch 18644.5 18480.9 Average: 18562.70 > > Difference being -2.6% regression > That's unfortunate. How much does this workload normally vary between runs? If you monitor migrations over time, is there an increase spike in migration early in the lifetime of the workload? -- Mel Gorman SUSE Labs