From mboxrd@z Thu Jan 1 00:00:00 1970 From: Srinivas Pandruvada Subject: Re: [intel-pstate driver regression] processor frequency very high even if in idle Date: Fri, 01 Apr 2016 10:44:34 -0700 Message-ID: <1459532674.13525.136.camel@linux.intel.com> References: <2727017.UmaUvtBLeX@vostro.rjw.lan> <3623107.tlAuqH4F7s@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mga09.intel.com ([134.134.136.24]:12679 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751775AbcDARoU (ORCPT ); Fri, 1 Apr 2016 13:44:20 -0400 In-Reply-To: Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: =?ISO-8859-1?Q?J=F6rg?= Otte , "Rafael J. Wysocki" Cc: "Rafael J. Wysocki" , Linux Kernel Mailing List , Linux PM list , Doug Smythies On Fri, 2016-04-01 at 16:06 +0200, J=C3=B6rg Otte wrote: > 2016-04-01 14:40 GMT+02:00 Rafael J. Wysocki : > >=20 > > On Friday, April 01, 2016 11:20:42 AM J=C3=B6rg Otte wrote: > > >=20 > > > 2016-03-31 17:43 GMT+02:00 Rafael J. Wysocki : > > > >=20 > > > > On Thursday, March 31, 2016 05:25:18 PM J=C3=B6rg Otte wrote: > > > > >=20 > > > > > 2016-03-31 13:42 GMT+02:00 Rafael J. Wysocki > > > > et>: > > > > > >=20 > > > > > > On Thursday, March 31, 2016 11:05:56 AM J=C3=B6rg Otte wrot= e: > > > > > >=20 [Cut] > > > > > >=20 > Done. Attached the tracer. > For me it looks like the previous one of the failing case. >=20 The traces show that idle task is constantly running without sleep. The driver is processing samples for idle task for every 10ms and aperf/mperf are showing that we are always in turbo mode for idle task. Need to find out why idle task is not sleeping. Thanks, Srinivas > Thanks, J=C3=B6rg