Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752943AbcC3Xl0 (ORCPT ); Wed, 30 Mar 2016 19:41:26 -0400 Received: from mail-lf0-f66.google.com ([209.85.215.66]:35269 "EHLO mail-lf0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750907AbcC3XlY convert rfc822-to-8bit (ORCPT ); Wed, 30 Mar 2016 19:41:24 -0400 MIME-Version: 1.0 In-Reply-To: References: <1459376311.13525.108.camel@linux.intel.com> <56FC5277.9050906@intel.com> <1459378003.13525.117.camel@linux.intel.com> <1459379847.13525.129.camel@intel.com> Date: Thu, 31 Mar 2016 01:41:22 +0200 X-Google-Sender-Auth: PoMhh0v20nArIWi8q1OJmn6G6bA Message-ID: Subject: Re: [intel-pstate driver regression] processor frequency very high even if in idle From: "Rafael J. Wysocki" To: sedat.dilek@gmail.com Cc: "Rafael J. Wysocki" , "Pandruvada, Srinivas" , "Wysocki, Rafael J" , "dsmythies@telus.net" , "linux-kernel@vger.kernel.org" , "jrg.otte@gmail.com" , "linux-pm@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2129 Lines: 60 On Thu, Mar 31, 2016 at 1:32 AM, Sedat Dilek wrote: > On Thu, Mar 31, 2016 at 1:28 AM, Rafael J. Wysocki wrote: >> On Thu, Mar 31, 2016 at 1:25 AM, Sedat Dilek wrote: >>> On Thu, Mar 31, 2016 at 1:17 AM, Pandruvada, Srinivas >>> wrote: >>>> On Wed, 2016-03-30 at 15:46 -0700, Srinivas Pandruvada wrote: >>>>> On Thu, 2016-03-31 at 00:25 +0200, Rafael J. Wysocki wrote: >>>>> > >>>>> > On 3/31/2016 12:18 AM, Srinivas Pandruvada wrote: >>>>> > > >>>>> > > >>>>> > > On Wed, 2016-03-30 at 23:41 +0200, Sedat Dilek wrote: >>>>> > > > >>>>> > > > >>>>> > > > Hi, >>>>> > > > >>>>> > > > I am using Intel-PState-Driver here with v4.6-rc1 and Intel- >>>>> > > > SandyBridge-CPU. >>>>> > > > >>>>> > > > Here are my turbostat results attached. >>>>> > > > >>>>> > > > $ cd $BUILD_DIR >>>>> > > > $ LC_ALL=C make -C tools/ turbostat >>>>> > > > >>>>> > > > $ sudo ./turbostat -i 1 --msr=0x199 --debug --out >>>>> > > > /tmp/turbostat-i-1-msr-0x199-debug.txt >>>>> > > > >>>>> > > > Will try . >>>>> > > > >>>>> > > > Please see attached files. >>>>> > > > >>>>> > > Thanks. Your logs make sense. You have config set to performance >>>>> > > mode >>>>> > > by default (Which I believe default in all kernel Ubuntu). So as >>>>> > > expected Intel P state was asking for max. So there is no issue >>>>> > > here. >>>>> > But the behavior is different from what it used to be, isn't it? >>>>> > >> >> [cut] >> >>> >>> Too much questions. >> >> OK >> >>> I switched to CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE=y and tested with >>> the simplified revert-patch of Rafael. >> >> Why do you need the revert patch in the first place? > > I simply wanted to test CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE=y and > keep the rest. But it is not clear to us whether or not your system has regressed with respect to 4.5, which is the whole point of this thread. Do you see a regression here? Jörg in particular is saying that he sees the problem with both performance and powersave settings. What about you?