Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932610AbXBZWhq (ORCPT ); Mon, 26 Feb 2007 17:37:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932626AbXBZWhq (ORCPT ); Mon, 26 Feb 2007 17:37:46 -0500 Received: from mx1.redhat.com ([66.187.233.31]:43733 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932620AbXBZWhp (ORCPT ); Mon, 26 Feb 2007 17:37:45 -0500 Date: Mon, 26 Feb 2007 17:36:45 -0500 From: Dave Jones To: Pete Harlan Cc: Nick Piggin , Rik van Riel , Lorenzo Allegrucci , linux-kernel@vger.kernel.org, Ingo Molnar , Suparna Bhattacharya , Jens Axboe Subject: Re: SMP performance degradation with sysbench Message-ID: <20070226223645.GA24174@redhat.com> Mail-Followup-To: Dave Jones , Pete Harlan , Nick Piggin , Rik van Riel , Lorenzo Allegrucci , linux-kernel@vger.kernel.org, Ingo Molnar , Suparna Bhattacharya , Jens Axboe References: <1172425476.5489.11.camel@odyssey.lan> <45E21FEC.9060605@redhat.com> <45E2E244.8040009@yahoo.com.au> <20070226220401.GA22363@artselect.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070226220401.GA22363@artselect.com> User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1077 Lines: 27 On Mon, Feb 26, 2007 at 04:04:01PM -0600, Pete Harlan wrote: > On Tue, Feb 27, 2007 at 12:36:04AM +1100, Nick Piggin wrote: > > I found a couple of interesting issues so far. Firstly, the MySQL > > version that I'm using (5.0.26-Max) is making lots of calls to > > FYI, MySQL fixed some scalability problems in version 5.0.30, as > mentioned here: > > http://www.mysqlperformanceblog.com/2007/01/03/innodb-benchmarks/ > > It may be worth using more recent sources than 5.0.26 if tracking down > scaling problems in MySQL. The blog post that originated this discussion ran tests on 5.0.33 Not that the mysql version should really matter. The key point here is that FreeBSD and Linux were running the *same* version, and FreeBSD was able to handle the situation better somehow. Dave -- http://www.codemonkey.org.uk - 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/