Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753018AbcDIGlE (ORCPT ); Sat, 9 Apr 2016 02:41:04 -0400 Received: from mail-wm0-f53.google.com ([74.125.82.53]:34960 "EHLO mail-wm0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752351AbcDIGlB (ORCPT ); Sat, 9 Apr 2016 02:41:01 -0400 Message-ID: <1460184056.3765.160.camel@gmail.com> Subject: Re: [regression] cross core scheduling frequency drop bisected to 0c313cb20732 From: Mike Galbraith To: "Rafael J. Wysocki" Cc: Peter Zijlstra , "Rafael J. Wysocki" , LKML , Linux PM list , Doug Smythies , Rik van Riel Date: Sat, 09 Apr 2016 08:40:56 +0200 In-Reply-To: <2428384.mEkP3EOpsR@vostro.rjw.lan> References: <1460092854.4051.1.camel@gmail.com> <20160408064510.GK3448@twins.programming.kicks-ass.net> <1460098254.5582.17.camel@gmail.com> <2428384.mEkP3EOpsR@vostro.rjw.lan> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 649 Lines: 18 On Fri, 2016-04-08 at 22:59 +0200, Rafael J. Wysocki wrote: > On Friday, April 08, 2016 08:50:54 AM Mike Galbraith wrote: > > On Fri, 2016-04-08 at 08:45 +0200, Peter Zijlstra wrote: > > > > > Cute, I thought you used governor=performance for your runs? > > > > I do, and those numbers are with it thus set. > > Well, this is a trade-off. > > 4.5 introduced a power regression here so this one goes back to the previous > state of things. That sounds somewhat reasonable. Too bad I don't have a super duper watt meter handy.. seeing that you really really are saving me money would perhaps make me less fond of those prettier numbers. -Mike