Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755184AbcC3WSR (ORCPT ); Wed, 30 Mar 2016 18:18:17 -0400 Received: from mga02.intel.com ([134.134.136.20]:19854 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755085AbcC3WSQ (ORCPT ); Wed, 30 Mar 2016 18:18:16 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,418,1455004800"; d="scan'208";a="774977825" Message-ID: <1459376311.13525.108.camel@linux.intel.com> Subject: Re: [intel-pstate driver regression] processor frequency very high even if in idle From: Srinivas Pandruvada To: sedat.dilek@gmail.com, "Rafael J. Wysocki" , Doug Smythies , =?ISO-8859-1?Q?J=F6rg?= Otte Cc: Linux PM List , LKML Date: Wed, 30 Mar 2016 15:18:31 -0700 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.18.5.1 (3.18.5.1-1.fc23) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1028 Lines: 39 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. I would expect the same in Jorg's platform. But he has a haswell which has a special feature called config TDP. So he is effectively running in powersave mode, his platform may be forcing to lower TDP. So Jorg, can you send the turbostate also with the above debug option. Also rdmsr 0xce rdmsr 0x1ad rdmsr 0x648 rdmsr 0x649 rdmsr 0x64A rdmsr 0x64b rdmsr 0x64c Thanks, Srinivas