Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752522AbZIIPw2 (ORCPT ); Wed, 9 Sep 2009 11:52:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752261AbZIIPw1 (ORCPT ); Wed, 9 Sep 2009 11:52:27 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:60293 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752181AbZIIPw1 (ORCPT ); Wed, 9 Sep 2009 11:52:27 -0400 Date: Wed, 9 Sep 2009 17:52:23 +0200 From: Ingo Molnar To: Serge Belyshev Cc: Con Kolivas , linux-kernel@vger.kernel.org, Peter Zijlstra , Mike Galbraith Subject: Re: Epic regression in throughput since v2.6.23 Message-ID: <20090909155223.GA12065@elte.hu> References: <20090906205952.GA6516@elte.hu> <87hbvdiogq.fsf@depni.sinp.msu.ru> <873a6xdqwq.fsf@depni.sinp.msu.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <873a6xdqwq.fsf@depni.sinp.msu.ru> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -1.5 BAYES_00 BODY: Bayesian 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: 778 Lines: 25 * Serge Belyshev wrote: > Serge Belyshev writes: > >[snip] > > I've updated the graphs, added kernels 2.6.24..2.6.29: > http://img186.imageshack.us/img186/7029/epicmakej4.png > > And added comparison with best-performing 2.6.23 kernel: > http://img34.imageshack.us/img34/7563/epicbfstips.png Thanks! I think we found the reason for that regression - would you mind to re-test with latest -tip, e157986 or later? If that works for you i'll describe our theory. 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/