Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751595AbaJZOlk (ORCPT ); Sun, 26 Oct 2014 10:41:40 -0400 Received: from mail-lb0-f173.google.com ([209.85.217.173]:52546 "EHLO mail-lb0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751380AbaJZOlj (ORCPT ); Sun, 26 Oct 2014 10:41:39 -0400 Message-ID: <1414334494.5304.43.camel@marge.simpson.net> Subject: Re: bisected: futex regression >= 3.14 - was - Slowdown due to threads bouncing between HT cores From: Mike Galbraith To: "Steinar H. Gunderson" Cc: Thomas Gleixner , Linus Torvalds , Linux Kernel Mailing List , Peter Zijlstra Date: Sun, 26 Oct 2014 15:41:34 +0100 In-Reply-To: <20141026141144.GA22911@sesse.net> References: <20141003194428.GA27084@sesse.net> <1412782664.5179.75.camel@marge.simpson.net> <1412791184.5173.11.camel@marge.simpson.net> <1414168721.5308.3.camel@marge.simpson.net> <20141026103918.GA5259@sesse.net> <1414329375.5304.20.camel@marge.simpson.net> <1414331916.5304.23.camel@marge.simpson.net> <20141026141144.GA22911@sesse.net> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 2014-10-26 at 15:11 +0100, Steinar H. Gunderson wrote: > On Sun, Oct 26, 2014 at 02:58:36PM +0100, Mike Galbraith wrote: > > Can you try the below? > > I can bake it into the kernel the next time I boot, but that is unlikely to > be anytime soon, I'm afraid. I'm maybe a bit surprised nobody else can > reproduce my issue; I assume it won't help if I give out shell access > somehow. Sure it would, any bug I can get my hands on, I can toss rocks and sticks at until one of us gives up :) Trouble is me having time to go play with your box, and you trusting me to not do naughty things while there, /me nearly always being in godmode (permission denied allergy), that would be a problem. -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/