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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 515D1C433DF for ; Tue, 30 Jun 2020 18:40:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2B5E020702 for ; Tue, 30 Jun 2020 18:40:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=telus.net header.i=@telus.net header.b="JFx5kCLq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726711AbgF3Skc (ORCPT ); Tue, 30 Jun 2020 14:40:32 -0400 Received: from cmta20.telus.net ([209.171.16.93]:46048 "EHLO cmta20.telus.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726161AbgF3Skc (ORCPT ); Tue, 30 Jun 2020 14:40:32 -0400 Received: from dougxps ([173.180.45.4]) by cmsmtp with SMTP id qLBAjf7NpmPBRqLBBjqXbR; Tue, 30 Jun 2020 12:40:30 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telus.net; s=neo; t=1593542430; bh=5lsW47LwcbLEtRnjtW+QOJmsT1zddKUIUZH9u4fGksw=; h=From:To:Cc:References:In-Reply-To:Subject:Date; b=JFx5kCLqN4LamJppGxGwSOJsn9jznwF87fwxh6722QXMSiD2/1+2vTC85iCounDJb A/Z1VDokZ03f16c18KzTQxFYcSgkuv074Ma8DrxSwwVwoLzIXPhWjGBUDcMmV1TusO 2g1lQsIoGpa5OvVx2cr9IHRSxC+2H2o6w3faGo1GXOX9WlX/hmePbyAqkLNJj5p8iu ubPQyGnTpuSlA/ybpuVdEyQ77F0Edsjh5ah37tDwyM3akuBuFXdg7FxVO7hdLiga4W BjeKpRvtnUhPJH6ntLUqUHz/BEylmPF7ncqJqtw4/iLK9fCTpG9Dz07tF/UhhLcwUn OkLGi/j2H5uCg== X-Telus-Authed: none X-Authority-Analysis: v=2.3 cv=ZvmT1OzG c=1 sm=1 tr=0 a=zJWegnE7BH9C0Gl4FFgQyA==:117 a=zJWegnE7BH9C0Gl4FFgQyA==:17 a=Pyq9K9CWowscuQLKlpiwfMBGOR0=:19 a=kj9zAlcOel0A:10 a=OM2GBPE6UocqHCZ_6TsA:9 a=CjuIK1q_8ugA:10 From: "Doug Smythies" To: "'Srinivas Pandruvada'" Cc: , , , , , , , , , , References: <20200626183401.1495090-1-srinivas.pandruvada@linux.intel.com> <20200626183401.1495090-3-srinivas.pandruvada@linux.intel.com> In-Reply-To: <20200626183401.1495090-3-srinivas.pandruvada@linux.intel.com> Subject: RE: [PATCH v4 2/2] cpufreq: intel_pstate: Allow raw energy performance preference value Date: Tue, 30 Jun 2020 11:40:24 -0700 Message-ID: <002301d64f0d$ee4bea10$cae3be30$@net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Content-Language: en-ca Thread-Index: AdZL6GfN1BQpAfQRQwWuKbhHibbLRAA8mfVA X-CMAE-Envelope: MS4wfO7oaIfxSFx3svGsM9XZ/bOt6LbDnNC2uVTFiGTFwNKr2B82MLeELAmZZnTJX9D9cQCCyy14mIw/vSa16A5QxZSJUQ5UYE6UBTogEYH0rzdE9/6yAVIE 2ydKkpE+D+89ZJRgt3xkzdaV49R4nSSX8Po2vgWhqAmunKRhEstLsHdakLxbjFUwSl+stHrUB77scr66zINi+bBKFdl52IRDkP0t5daD8bJ4XdXOwSB/hOTo KPCPX2Ed4tyrVMDckiKrnIOfip7pPWw+s/Xhx2BKKJmBabElLJcBgYGcvd7lTMYodgtxaSiWz47J1icIBbuzRFFU6HKZjpKSwUO/4RBWy/LoYmJpdolVg7Mg 2v2yIELSTDG/9hfPLu0SgK/WjLRjhNBBprEmOD95TerlpGMmRyUqmkCpxGdy+RTKPexLmorgC0ovlGRny4eMtN4WBraxNvRzrK4mHuOgHYXQkyrX+DPUAGtI EDDmKt2C82CvTn5KO961z5k4rNaeDIiuwophog== Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Hi Srinivas, Thanks for all your work on this. I have fallen behind, and not sure when I can catch up. However... On 2020.06.26 11:34 Srinivas Pandruvada wrote: > Similarly on battery the default "balance_performance" mode can be > aggressive in power consumption. But picking up the next choice > "balance power" results in too much loss of performance, which results in > bad user experience in use cases like "Google Hangout". It was observed > that some value between these two EPP is optimal. There is a possibility that one of the issues I have been ranting about could be a contributing factor to things like this. (I don't know if it actually is.) One way to compensate is to lower EPP. I am going to send a new e-mail in a minute about it. Please consider the possibility that some of these EPP adjustments might just be programming around the issue. ... Doug