From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yuyang Du Subject: Re: [RFC PATCH] cpufreq: intel_pstate: Change the calculation of next pstate Date: Tue, 13 May 2014 03:34:53 +0800 Message-ID: <20140512193453.GB9351@intel.com> References: <5368255D.3090207@semaphore.gr> <536BEE89.3040602@gmail.com> <536CECB4.1090109@semaphore.gr> <53712F4B.7000101@semaphore.gr> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mga02.intel.com ([134.134.136.20]:33257 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752747AbaEMDjh (ORCPT ); Mon, 12 May 2014 23:39:37 -0400 Content-Disposition: inline In-Reply-To: <53712F4B.7000101@semaphore.gr> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Stratos Karafotis Cc: Dirk Brandewie , "Rafael J. Wysocki" , Viresh Kumar , Dirk Brandewie , "linux-pm@vger.kernel.org" , LKML , Doug Smythies On Mon, May 12, 2014 at 11:30:03PM +0300, Stratos Karafotis wrote: > On 09/05/2014 05:56 =CE=BC=CE=BC, Stratos Karafotis wrote: > > Next performance state =3D min_perf + (max_perf - min_perf) * load / = 100 >=20 Hi, This formula is fundamentally broken. You need to associate the load wi= th its frequency. Thanks, Yuyang