Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759909AbXJKNc5 (ORCPT ); Thu, 11 Oct 2007 09:32:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759423AbXJKNc1 (ORCPT ); Thu, 11 Oct 2007 09:32:27 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:53531 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759632AbXJKNcY (ORCPT ); Thu, 11 Oct 2007 09:32:24 -0400 Date: Thu, 11 Oct 2007 15:32:11 +0200 From: Ingo Molnar To: "Zhang, Yanmin" Cc: Nicholas Miell , Linus Torvalds , Linux Kernel Mailing List Subject: Re: Linux 2.6.23 Message-ID: <20071011133211.GA5510@elte.hu> References: <1191996740.8694.7.camel@entropy> <20071010101452.GA25433@elte.hu> <1192070057.3019.17.camel@ymzhang> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1192070057.3019.17.camel@ymzhang> User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean 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=3.1.7-deb -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0001] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 932 Lines: 21 * Zhang, Yanmin wrote: > > ( Config is at http://redhat.com/~mingo/misc/config, system is Core2Duo > > 1.83 GHz, mysql-5.0.45, glibc-2.6. Nothing fancy either in the config > > nor in the setup - everything is pretty close to the defaults. ) > > I used FedoraCore 8 Test2 distribution, so glibc-2.6.90-13 already > fixed the old malloc scalability issue. Cpu is 2.66GHZ quad core, 2 > physical processor, totally 8 cores. The regression is about 28%. thanks for confirming this! I've updated glibc and mysql and now i can reproduce something similar. (I have a theory about the reason of this regression, and i'm working on a test-patch.) 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/