From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31DAFC00449 for ; Wed, 3 Oct 2018 13:22:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E2E162082A for ; Wed, 3 Oct 2018 13:22:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E2E162082A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=techsingularity.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726872AbeJCUKV (ORCPT ); Wed, 3 Oct 2018 16:10:21 -0400 Received: from outbound-smtp25.blacknight.com ([81.17.249.193]:40101 "EHLO outbound-smtp25.blacknight.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726720AbeJCUKV (ORCPT ); Wed, 3 Oct 2018 16:10:21 -0400 Received: from mail.blacknight.com (pemlinmail05.blacknight.ie [81.17.254.26]) by outbound-smtp25.blacknight.com (Postfix) with ESMTPS id 4A16CB8813 for ; Wed, 3 Oct 2018 14:21:57 +0100 (IST) Received: (qmail 7280 invoked from network); 3 Oct 2018 13:21:57 -0000 Received: from unknown (HELO techsingularity.net) (mgorman@techsingularity.net@[37.228.229.88]) by 81.17.254.9 with ESMTPSA (AES256-SHA encrypted, authenticated); 3 Oct 2018 13:21:57 -0000 Date: Wed, 3 Oct 2018 14:21:55 +0100 From: Mel Gorman To: Srikar Dronamraju Cc: Peter Zijlstra , Ingo Molnar , Jirka Hladky , Rik van Riel , LKML , Linux-MM 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> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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