From owner-cvs-src@FreeBSD.ORG Mon Jul 23 21:24:55 2007 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E5B4316A549 for ; Mon, 23 Jul 2007 21:24:55 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.171]) by mx1.freebsd.org (Postfix) with ESMTP id 2003E13C48E for ; Mon, 23 Jul 2007 21:24:54 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: by ug-out-1314.google.com with SMTP id o4so39414uge for ; Mon, 23 Jul 2007 14:24:54 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=eqGBZb+kbEtzabi1RZQG2X9sWQsc+0JmGpeRaGQSOXUGDumOGHhrzEYUTjQpimrLGj+TcrYRrvSCLD3mjFBOIfU/x2o0e1+Kz87rjw6zuNspKNjb2f9yC8TQzVgxTFjhPG+DyzYbE+IUCS8Dj7id8R0ywegF71qXka5OpB2/TsI= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=EFfE+yiidBREIslcEHadAp+l38ccn0p3PE5LkWic9djKVPWGQdxHyjFYi6Av66wG2RRHGDHom5Iy3K3bE5ZTTqYpPyzbF8/bYVlK08sfgtGrY8YRlhUJ/qoU2m6XPJ5O67cBPO9ITMxXiqN2Bk2fjs9ym1Y2d0FE34QbDcgVM3g= Received: by 10.78.171.20 with SMTP id t20mr874681hue.1185224359474; Mon, 23 Jul 2007 13:59:19 -0700 (PDT) Received: by 10.78.120.9 with HTTP; Mon, 23 Jul 2007 13:59:19 -0700 (PDT) Message-ID: <3bbf2fe10707231359ge18ef19s1db60160ee497bfa@mail.gmail.com> Date: Mon, 23 Jul 2007 22:59:19 +0200 From: "Attilio Rao" Sender: asmrookie@gmail.com To: "Jeremie Le Hen" In-Reply-To: <20070723201642.GC96643@obiwan.tataz.chchile.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200707032126.l63LQ7ea027929@repoman.freebsd.org> <20070703142714.F552@10.0.0.1> <20070723201642.GC96643@obiwan.tataz.chchile.org> X-Google-Sender-Auth: d263ac226a4cbfbc Cc: Jeff Roberson , src-committers@freebsd.org, cvs-all@freebsd.org, cvs-src@freebsd.org Subject: Re: cvs commit: src/sys/kern kern_descrip.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Jul 2007 21:24:56 -0000 2007/7/23, Jeremie Le Hen : > Hi Jeff, > > On Tue, Jul 03, 2007 at 02:27:51PM -0700, Jeff Roberson wrote: > > For the curious, these last two patches make a substantial improvement to > > mysql write performance on my 8way opteron: > > > > http://people.freebsd.org/~jeff/mysqlwrite.png > > > > The green line is without and the blue line is with. > > Just for information, do you have any hint why Linux eventually > performs better above 18 threads? IIRC, this workload is lockmgr() dominated now, which is particulary unlucky for us since they are very heavy. Attilio -- Peace can only be achieved by understanding - A. Einstein