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: Wed, 30 Mar 2016 15:46:43 -0700 Message-ID: <1459378003.13525.117.camel@linux.intel.com> References: <1459376311.13525.108.camel@linux.intel.com> <56FC5277.9050906@intel.com> 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]:20303 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752706AbcC3Wq2 (ORCPT ); Wed, 30 Mar 2016 18:46:28 -0400 In-Reply-To: <56FC5277.9050906@intel.com> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: "Rafael J. Wysocki" Cc: sedat.dilek@gmail.com, Doug Smythies , =?ISO-8859-1?Q?J=F6rg?= Otte , Linux PM List , LKML , "Rafael J. Wysocki" On Thu, 2016-03-31 at 00:25 +0200, Rafael J. Wysocki wrote: > On 3/31/2016 12:18 AM, Srinivas Pandruvada wrote: > >=20 > > On Wed, 2016-03-30 at 23:41 +0200, Sedat Dilek wrote: > > >=20 > > > Hi, > > >=20 > > > I am using Intel-PState-Driver here with v4.6-rc1 and Intel- > > > SandyBridge-CPU. > > >=20 > > > Here are my turbostat results attached. > > >=20 > > > $ cd $BUILD_DIR > > > $ LC_ALL=3DC make -C tools/ turbostat > > >=20 > > > $ sudo ./turbostat -i 1 --msr=3D0x199 --debug --out > > > /tmp/turbostat-i-1-msr-0x199-debug.txt > > >=20 > > > Will try . > > >=20 > > > Please see attached files. > > >=20 > > 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? >=20 There are two turbostat output files, In both I see we are requesting max (0x1700) in performance mode. This CPU is Sandybridge, so no config TDP here, the other problem system reported is Haswell =2E =C2=A00=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A01=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A03=C2=A0=C2=A0=C2=A0=C2=A00.15=C2=A0=C2=A0=C2=A0=C2= =A02017=C2=A0=C2=A0=C2=A0=C2=A01596=C2=A0=C2=A00x00001700=C2=A0 I am not sure whether Sedat is saying that he has the same issue as Jorg. I think Sedat will see the same turbostat output if he ran 4.5. Sedat,=C2=A0 Please confirm whether you see difference between 4.5 and 4.6-rc1. Thanks, Srinivas > So there seems to be a problem here AFAICS. >=20 > -- > To unsubscribe from this list: send the line "unsubscribe linux-pm" > in > the body of a message to majordomo@vger.kernel.org > More majordomo info at=C2=A0=C2=A0http://vger.kernel.org/majordomo-in= fo.html