Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759190Ab1DPKO1 (ORCPT ); Sat, 16 Apr 2011 06:14:27 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:56349 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759127Ab1DPKOW (ORCPT ); Sat, 16 Apr 2011 06:14:22 -0400 Date: Sat, 16 Apr 2011 12:14:06 +0200 From: Ingo Molnar To: Peter Zijlstra Cc: Robert Richter , Stephane Eranian , LKML , Arnaldo Carvalho de Melo , =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker Subject: Re: [PATCH 4/4] perf, x86: Fix event scheduler to solve complex scheduling problems Message-ID: <20110416101406.GA11534@elte.hu> References: <1302913676-14352-1-git-send-email-robert.richter@amd.com> <1302913676-14352-5-git-send-email-robert.richter@amd.com> <1302943877.32491.9.camel@twins> <20110416094348.GA24711@elte.hu> <1302948520.32491.10.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1302948520.32491.10.camel@twins> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.3.1 -2.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 910 Lines: 23 * Peter Zijlstra wrote: > On Sat, 2011-04-16 at 11:43 +0200, Ingo Molnar wrote: > > I'd also prefer if we first had actual testcases in 'perf test' for all these > > failures - it took an *awfully* long time to find these regressions (the event > > scheduler code has been committed for months), while with proper testcases it > > would only take a second to run 'perf test'. > > These cases only exist on AMD F15, I don't think there's many people > with such systems around. Well, if the trend continues we'll have more twisted constraints and more bugs of this sort, so having a testsuite sure cannot hurt, right? Thanks, Ingo -- 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/