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=-3.8 required=3.0 tests=BAYES_00, 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 1AD81C4742C for ; Thu, 5 Nov 2020 14:31:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BCE25206FA for ; Thu, 5 Nov 2020 14:31:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730429AbgKEObX (ORCPT ); Thu, 5 Nov 2020 09:31:23 -0500 Received: from cloudserver094114.home.pl ([79.96.170.134]:60204 "EHLO cloudserver094114.home.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727275AbgKEObW (ORCPT ); Thu, 5 Nov 2020 09:31:22 -0500 Received: from 89-64-88-191.dynamic.chello.pl (89.64.88.191) (HELO kreacher.localnet) by serwer1319399.home.pl (79.96.170.134) with SMTP (IdeaSmtpServer 0.83.514) id 655d08c39cdc583d; Thu, 5 Nov 2020 15:31:20 +0100 From: "Rafael J. Wysocki" To: Mike Galbraith Cc: lkml , Peter Zijlstra , Linux PM Subject: Re: v5.8+ powersave governor breakage? Date: Thu, 05 Nov 2020 15:31:19 +0100 Message-ID: <2948497.iyA2Nh11HS@kreacher> In-Reply-To: <59d0b9516ce9a553b1e526c6495ac302f1f73e0d.camel@gmx.de> References: <580d12716f6363d7404805fd4bc50e2d5ab459b0.camel@gmx.de> <59d0b9516ce9a553b1e526c6495ac302f1f73e0d.camel@gmx.de> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On Monday, November 2, 2020 7:18:41 AM CET Mike Galbraith wrote: > On Sun, 2020-11-01 at 17:23 +0100, Mike Galbraith wrote: > > Greetings, > > > > As you can see in the data below, my i4790 box used to default to the > > powersave governor despite CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y, and > > disallowed switching to ondemand. > > Ok, my HP lappy running master.today still defaults to powersave, with > CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL=y, still disallows selecting > ondemand as before, and powersave still works. IOW for lappy, it was > business as usual, no change. OK > Desktop box did, it gained a working ondemand, while its previously > working powersave went broke. Most likely that's because it was handled by intel_pstate in the "active" mode previously, while it is now handled by it in the "passive" mode (the modes are described in detail in Documentation/admin-guide/pm/intel_pstate.rst) and the default governor should be "schedutil". Which should be slightly better from the functionality perspective. > Box had schedutil forced upon it, but it > seems perfectly fine with that performance wise. Which is the expected outcome (sorry for the confusion). Cheers!