Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965127AbcCOIws (ORCPT ); Tue, 15 Mar 2016 04:52:48 -0400 Received: from mga02.intel.com ([134.134.136.20]:8488 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964915AbcCOIwk convert rfc822-to-8bit (ORCPT ); Tue, 15 Mar 2016 04:52:40 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,338,1455004800"; d="scan'208";a="937358508" From: "Longepe, Philippe" To: Thomas Voegtle CC: "linux-kernel@vger.kernel.org" , "Gasparini, Stephane" , "Wysocki, Rafael J" , "Pandruvada, Srinivas" Subject: RE: Performance drop on Baytrail with 4.5-rc2 Thread-Topic: Performance drop on Baytrail with 4.5-rc2 Thread-Index: AQHRXS/8zqWkQWhQ8kiK1i6GH0/eFZ8Yjm0ggABbxoCAASkiG4A9kiOAgALNKhw= Date: Tue, 15 Mar 2016 08:52:34 +0000 Message-ID: <8B729BF8A98FF048A53185F813A469D935B3697A@HASMSX105.ger.corp.intel.com> References: <8B729BF8A98FF048A53185F813A469D935B19D03@HASMSX105.ger.corp.intel.com>, <8B729BF8A98FF048A53185F813A469D935B1A189@HASMSX105.ger.corp.intel.com>, In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [163.33.3.153] Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1976 Lines: 61 Hi Thomas, The patches which are improving ffmeg had to be tested for 2 months on android before submission. That's why I resubmitted them very recently for review on our internal list. They will be submitted them to the linux-pm list as soon as our internal review will be finished. Srinivas, Rafael, did you get a chance to look at my patches (Perf/Power improvements for load-based algorithm) ? In the meantime I'll do some additional tests with phoronix test suites. Regards, Philippe, ________________________________________ From: Thomas Voegtle [tv@lio96.de] Sent: Sunday, March 13, 2016 4:54 PM To: Longepe, Philippe Cc: linux-kernel@vger.kernel.org; Gasparini, Stephane; Wysocki, Rafael J Subject: RE: Performance drop on Baytrail with 4.5-rc2 On Wed, 3 Feb 2016, Longepe, Philippe wrote: > Hi Thomas, > > Thank you for sharing this test. I just did a quick test and yes this is > really interesting ! > > Without the scale option, the load is close to 100% for each cpus (so > the pstates are increasing up to the turbo frequency) but with > scale=320:208, the load is oscillating (close to 50% in average), so the > requested frequencies are lower (the power is also reduced). > > I have a patch (not yet submitted) that reduce the gap for such a use > case. Hi, may I ask you where this patch stays? I have seen nothing in Linus' tree, that fixes that performance drop? Thanks, Thomas --------------------------------------------------------------------- Intel Corporation SAS (French simplified joint stock company) Registered headquarters: "Les Montalets"- 2, rue de Paris, 92196 Meudon Cedex, France Registration Number: 302 456 199 R.C.S. NANTERRE Capital: 4,572,000 Euros This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.