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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_2 autolearn=no 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 A9B95C19437 for ; Fri, 4 Dec 2020 17:11:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B22522B30 for ; Fri, 4 Dec 2020 17:11:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388593AbgLDRKz (ORCPT ); Fri, 4 Dec 2020 12:10:55 -0500 Received: from mx2.suse.de ([195.135.220.15]:42368 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388544AbgLDRKy (ORCPT ); Fri, 4 Dec 2020 12:10:54 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id A7643ACC3; Fri, 4 Dec 2020 17:10:12 +0000 (UTC) Message-ID: <1607101812.24959.157.camel@suse.cz> Subject: Re: [PATCH v4 RESEND] x86, sched: Use midpoint of max_boost and max_P for frequency invariance on AMD EPYC From: Giovanni Gherdovich To: Borislav Petkov , Thomas Gleixner , Ingo Molnar , Peter Zijlstra , Len Brown , "Rafael J . Wysocki" Cc: Nathan Fontenot , x86@kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org Date: Fri, 04 Dec 2020 18:10:12 +0100 In-Reply-To: <20201204170326.4178-1-ggherdovich@suse.cz> References: <20201112182614.10700-3-ggherdovich@suse.cz> <20201204170326.4178-1-ggherdovich@suse.cz> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2020-12-04 at 18:03 +0100, Giovanni Gherdovich wrote: > Frequency invariant accounting calculations need the ratio > freq_curr/freq_max, but freq_max is unknown as it depends on dynamic power > allocation between cores: AMD EPYC CPUs implement "Core Performance Boost". > Three candidates are considered to estimate this value: > [...] > > Benchmarks are described in the next section. > Tilde (~) means the value is the same as baseline. > > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - > ondemand perfgov sugov-noinv sugov-max sugov-mid sugov-P0 better if > - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - > [...] Hello, this patch is currently merged in the tip tree, branch sched/core as commit 46609527577d1def0af29ca5b56cffeeea771ada. Unfortunately in the original commit message I used "----------" for making table headers, and git dropped all the commit message after that sign, i.e. the benchmark results and my signed-off-by. In this "resend" I replaced the offending sign and the new commit message should make it intact to the destination tree. Thanks, Giovanni