From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Shi Subject: Re: bltk-game regressions on snb laptop Date: Thu, 18 Apr 2013 13:24:51 +0800 Message-ID: <516F83A3.9050401@intel.com> References: <516CFA57.3060709@intel.com> <516F42EE.6080802@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mga03.intel.com ([143.182.124.21]:25325 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752417Ab3DRFZ3 (ORCPT ); Thu, 18 Apr 2013 01:25:29 -0400 In-Reply-To: Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Viresh Kumar Cc: Linux PM list , "Brown, Len" , "Wysocki, Rafael J" , Arjan van de Ven , LKP ML On 04/18/2013 12:36 PM, Viresh Kumar wrote: >>> >> Wihtout your patch >>> >> [alexs@lkp-sb01 ~]$ cat /sys/.../cpu*/cpufreq/scaling_cur_freq >>> >> 2201000 >>> >> 2201000 >>> >> 2201000 >>> >> 2201000 >>> >> 2201000 >>> >> 2201000 >>> >> 2201000 >>> >> 2201000 >> > >> > I think something wrong is happening without my patch as setting >> > related_cpus alone was wrong. > BTW, it looks many of your cpus are staying at higher or max freq and > that's why you are getting better values. And this happened unintentionally > due to a bug in setting related_cpus which my patch fixed. Anyway, that make 'ondemand' governor get quite better performance and perf/watt. :) -- Thanks Alex