From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Doug Smythies" Subject: RE: Can't enable/switch to 'schedutil' governor with kernel 4.7.2 ? Date: Wed, 24 Aug 2016 16:51:26 -0700 Message-ID: <002401d1fe62$6ea9d8d0$4bfd8a70$@net> References: <1471969523.3010993.703762385.6A0277B5@webmail.messagingengine.com> <000f01d1fd84$9fd127d0$df737770$@net> <1472068841.1982612.705147345.1DDE879C@webmail.messagingengine.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from cmta16.telus.net ([209.171.16.89]:34935 "EHLO cmta16.telus.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754911AbcHYEqd (ORCPT ); Thu, 25 Aug 2016 00:46:33 -0400 In-Reply-To: <1472068841.1982612.705147345.1DDE879C@webmail.messagingengine.com> Content-Language: en-ca Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: lists@ssl-mail.com Cc: linux-pm@vger.kernel.org On 2016.08.24 13:01 lists@ssl-mail.com wrote: > On Tue, Aug 23, 2016, at 02:23 PM, Doug Smythies wrote: >> On 2016.08.23 09:25 lists@ssl-mail.com wrote: >> >>> Can't enable/switch to 'schedutil' governor >>> I'm running >>> uname -rm >>> 4.7.2-1.g34ba8d6-default x86_64 >>> >>> I'm trying to set/use the 'schedutil' governor. >> >> ...[cut]... >> >> Please try not using cpupower or any other utility. >> Please try using the primitive commands directly. > as a general rule? That is up to you. Myself, I never use other utilities or tools if I can avoid it (and this issue is a good example as to why). > or in this case? Yes, in this case as a way to separate the variables. If you use a separate tool then you don't know if the problem is in the tool or the kernel. > IT appears the problem's actually a kernel bug: > > Bug 135391 - cpupower does not change the governor anymore > https://bugzilla.kernel.org/show_bug.cgi?id=135391 No, that looks to me like a bug in the tool/utility and not the kernel itself. > AFAICT the fix isn't in the 4.7.X tree, just in the 4.8.X one.