Received: by 2002:ac0:a582:0:0:0:0:0 with SMTP id m2-v6csp1002192imm; Thu, 4 Oct 2018 06:50:30 -0700 (PDT) X-Google-Smtp-Source: ACcGV61O0O5S0WGXoF87UPF1PJf/cxOIQ9v6JaV/CsbDAZMHBFHbYwF6BjzHM9urknjQ2uBreJOk X-Received: by 2002:a63:3dcb:: with SMTP id k194-v6mr5825678pga.191.1538661030898; Thu, 04 Oct 2018 06:50:30 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1538661030; cv=none; d=google.com; s=arc-20160816; b=pgzxGNow0I72d9Tto2lRty5n3GrtDuMHqqJaIFjml0QIXW8gpeYQC4zbi8eEilhVTy li0i2tyloA4013voSyZwXx7zx2GSvcMS54ETgaxOEyz9hu/BJhQQpAXnjzcTF17IqTPP ja/9evV3tZmC9kULHWeGCHMwoVRr2cvGJ2IPxaYe+wUpmqlP3O5fZ+pSf2Us3uyufME0 MjzQJRVn4759qbLf5HkNdOn/CGD4rrxs6AgGYNomsxQR1n1BAvaave4HLenh7DdQxEsy eUr+nmA6Y9UkkLC7LzgeKSFciV+opG6zvQxtii7VU881mCREYvhuAsjrenotiljijqbS dDEA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:subject:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to; bh=QsEAv7dsbxmBZC2SF3S9DKxU9vfgIgm2F74lY8jDv2k=; b=jRKcwePmNw6zwvq3b+e69VJ3isRB0ReIi0lZn9tSAfD6Q2dPBKzWNIGn8454oUl1tb +h7snQY/NNlyeLgA4IAGfkeswpy+1kYUGNYBI6xeQOWH/cpGZCHczgb34OO3pWXbdmLL V9tZQxSYBdpxm10wVK75q6euDBstC5U11GvzgRpVp2pagPN1HvyoiMCcVbgsGqUKwgLN PyFjTiYfgvHUbAdCjcC6tcV8XRe0jyE70XuLkXY+ksW3/30sWr187BcxGlUaTlMl+To5 4/h02wVloGnYZBGdkAldET/ocgTNeaNiSzZ8JhJqSYQcvYkFcjnOMukKS7/AidKPvumi eNnw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q5-v6si4426246pgg.105.2018.10.04.06.50.15; Thu, 04 Oct 2018 06:50:30 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727666AbeJDUnI (ORCPT + 99 others); Thu, 4 Oct 2018 16:43:08 -0400 Received: from edison.jonmasters.org ([173.255.233.168]:43586 "EHLO edison.jonmasters.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727293AbeJDUnH (ORCPT ); Thu, 4 Oct 2018 16:43:07 -0400 X-Greylist: delayed 2475 seconds by postgrey-1.27 at vger.kernel.org; Thu, 04 Oct 2018 16:43:07 EDT Received: from boston.jonmasters.org ([74.92.29.237] helo=tonnant.bos.jonmasters.org) by edison.jonmasters.org with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1g83Ms-0001np-0Z; Thu, 04 Oct 2018 13:08:38 +0000 To: Jirka Hladky , Srikar Dronamraju Cc: Mel Gorman , =?UTF-8?Q?Jakub_Ra=c4=8dek?= , linux-kernel , "kkolakow@redhat.com" , Ingo Molnar , Peter Zijlstra References: From: Jon Masters Message-ID: <47e91887-089b-ba71-5f13-5acca0c8c5ad@jonmasters.org> Date: Thu, 4 Oct 2018 09:08:36 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 74.92.29.237 X-SA-Exim-Mail-From: jcm@jonmasters.org X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on edison.jonmasters.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.3.1 Subject: Re: [SCHEDULER] Performance drop in 4.19 compared to 4.18 kernel X-SA-Exim-Version: 4.2.1 (built Sun, 08 Nov 2009 07:31:22 +0000) X-SA-Exim-Scanned: Yes (on edison.jonmasters.org) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/7/18 5:34 AM, Jirka Hladky wrote: > We would also be more than happy to test the new patches for the > performance - please let us know if you are interested. We have a > pool of 1 NUMA up to 8 NUMA boxes for that, both AMD and Intel, > covering different CPU generations from Sandy Bridge till Skylake. I've followed up internally on ensuring Arm is added to your mix. Can get you suitable 1 and 2P systems for internal use. Jon.