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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F0868C433EF for ; Fri, 8 Apr 2022 17:30:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235058AbiDHRcy (ORCPT ); Fri, 8 Apr 2022 13:32:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238227AbiDHRcr (ORCPT ); Fri, 8 Apr 2022 13:32:47 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id EFF599F3B3 for ; Fri, 8 Apr 2022 10:30:43 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B36BC1042; Fri, 8 Apr 2022 10:30:43 -0700 (PDT) Received: from [10.1.196.218] (eglon.cambridge.arm.com [10.1.196.218]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id CC78C3F5A1; Fri, 8 Apr 2022 10:30:41 -0700 (PDT) Subject: Re: [PATCH v3 00/21] x86/resctrl: Make resctrl_arch_rmid_read() return values in bytes To: 20220217182110.7176-1-james.morse@arm.com, x86@kernel.org, linux-kernel@vger.kernel.org Cc: Fenghua Yu , Reinette Chatre , Thomas Gleixner , Ingo Molnar , Borislav Petkov , H Peter Anvin , Babu Moger , shameerali.kolothum.thodi@huawei.com, Jamie Iles , D Scott Phillips OS , lcherian@marvell.com, bobo.shaobowang@huawei.com, cristian.marussi@arm.com References: From: James Morse Message-ID: Date: Fri, 8 Apr 2022 18:30:40 +0100 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Language: en-GB Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Cristian, On 15/03/2022 12:10, Cristian Marussi wrote: > I tested this on an Intel(R) Xeon(R) Gold 5120T trying to compare gathered > resctrl monitor data with and without your series and see if results > were consistent. > > I started from this paper [0] from Intel itself for my basic setup with > some minor variations: [..] > While doing that I collect in background (and out of node1 processors) all > the mon_data from the lc_cos group every 100ms and dump those in a file one > for each cache allocation mask. (mondata_LC_7f0_00f.txt etc) > > I tested first against a v5.17-rc1 mainline without your series (named as > 5.17.0-rc1-mainline in the results) and then again with your series on top > (named as 5.17.0-rc1-00021-g21c69a5706a5). Got your series from [1]. > > Then I used gnuplot to see what was the 'profile' of this data with and > without your series by plotting the LC process llc_occupancy data against > time for each one of the runs with the differerent cache allocated. > (each colored graphs represent a different run with a different > cache allocation as reported) > Hope this helps... This is great, thanks! Can I take this as a Tested-by? Thanks, James