From mboxrd@z Thu Jan 1 00:00:00 1970 From: Srinivas Pandruvada Subject: Re: Regression in 4.8 - CPU speed set very low Date: Mon, 26 Sep 2016 14:41:49 -0700 Message-ID: <1474926109.35049.125.camel@linux.intel.com> References: <3919370.SGLjGupePs@vostro.rjw.lan> <075788ab-34e0-803c-f2b4-3f370ecc6b14@lwfinger.net> <2477506.olat0BX4ex@vostro.rjw.lan> <1474925190.35049.120.camel@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mga01.intel.com ([192.55.52.88]:9292 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936336AbcIZVlu (ORCPT ); Mon, 26 Sep 2016 17:41:50 -0400 In-Reply-To: Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: "Rafael J. Wysocki" Cc: "Rafael J. Wysocki" , Larry Finger , LKML , Linux PM list On Mon, 2016-09-26 at 23:30 +0200, Rafael J. Wysocki wrote: > On Mon, Sep 26, 2016 at 11:26 PM, Srinivas Pandruvada > wrote: > > > > On Mon, 2016-09-26 at 23:06 +0200, Rafael J. Wysocki wrote: > > > > > > On Monday, September 26, 2016 11:15:45 AM Larry Finger wrote: > > > > [...] > > > > > > > > > > > > > I have been reluctant to post my entire .config on the list. It > > > > is > > > > available at > > > > http://pastebin.com/aMZaAKwL. > > > > > > If the governor is ondemand, the driver is acpi-cpufreq, most > > > likely. > > > > > > How do you measure the frequency? > > > > > Also > > When you get into this situation, please dump: > > # cat /sys/devices/system/cpu/cpufreq/policy?/scaling_max_freq > > # cat /sys/devices/system/cpu/intel_pstate/* > > The driver is not intel_pstate. I guessed from CONFIG_X86_INTEL_PSTATE=y and Frequency is not 400 but something like 396.130 Thanks, Srinivas