Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752707AbcDILHk (ORCPT ); Sat, 9 Apr 2016 07:07:40 -0400 Received: from casper.infradead.org ([85.118.1.10]:49899 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751019AbcDILHj (ORCPT ); Sat, 9 Apr 2016 07:07:39 -0400 Date: Sat, 9 Apr 2016 13:07:29 +0200 From: Peter Zijlstra To: "Rafael J. Wysocki" Cc: Mike Galbraith , "Rafael J. Wysocki" , LKML , Linux PM list , Doug Smythies , Rik van Riel Subject: Re: [regression] cross core scheduling frequency drop bisected to 0c313cb20732 Message-ID: <20160409110729.GS3448@twins.programming.kicks-ass.net> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2428384.mEkP3EOpsR@vostro.rjw.lan> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 527 Lines: 15 On Fri, Apr 08, 2016 at 10:59:59PM +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. Just for my elucidation; how can gov=performance have a 'power' regression?