From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752485AbbFAKAx (ORCPT ); Mon, 1 Jun 2015 06:00:53 -0400 Received: from mail-wg0-f51.google.com ([74.125.82.51]:34782 "EHLO mail-wg0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753202AbbFAKAM (ORCPT ); Mon, 1 Jun 2015 06:00:12 -0400 Message-ID: <1433152808.6827.139.camel@gmail.com> Subject: Re: sched_setscheduler() vs idle_balance() race From: Mike Galbraith To: Peter Zijlstra Cc: LKML , Ingo Molnar , ktkhai@parallels.com Date: Mon, 01 Jun 2015 12:00:08 +0200 In-Reply-To: <20150601081658.GQ19282@twins.programming.kicks-ass.net> References: <1432799032.3237.119.camel@gmail.com> <20150528135355.GK3644@twins.programming.kicks-ass.net> <1432824866.3237.198.camel@gmail.com> <20150528152456.GO3644@twins.programming.kicks-ass.net> <1432924227.8727.23.camel@gmail.com> <20150601081658.GQ19282@twins.programming.kicks-ass.net> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.11 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 On Mon, 2015-06-01 at 10:16 +0200, Peter Zijlstra wrote: > On Fri, May 29, 2015 at 08:30:27PM +0200, Mike Galbraith wrote: > > > It took quite a bit longer than I thought it would, but I finally > > managed to cobble a standalone testcase together that brings nearly > > instant gratification on my 8 socket DL980. Patched kernel explodes, so > > first cut ain't quite ready to ship ;-) > > Could you perchance share this testcase? Sure, I'll send it off list. I'd just post it, but the duct tape might fall off somewhere in transit, and land god knows where ;-) -Mike