From owner-freebsd-current@FreeBSD.ORG Mon Jun 4 14:31:19 2007 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id DFC1816A46B for ; Mon, 4 Jun 2007 14:31:19 +0000 (UTC) (envelope-from joao.barros@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 434A513C480 for ; Mon, 4 Jun 2007 14:31:19 +0000 (UTC) (envelope-from joao.barros@gmail.com) Received: by ug-out-1314.google.com with SMTP id u2so892529uge for ; Mon, 04 Jun 2007 07:31:17 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=B5OMFq5OoOrjBwUJQNTx5dNEjuNIKgMl9QkNUBB3mpWTrlKRfBaz5dtzFGPST2iTndl7vg8ZNBK5zLp196Tlzba0js71ZEO4rOXc9uwjSRuak+Ebi/fTppUwiEfct0aOXnRMinLMvi1fah6I84e0l8tf0f0G33/uvIX6rV1ib9Y= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=MGtZGwlZ4B3Rnl1Zs21Oe0XWP8t/qR6RxDHvILMJ6W17juQDLGOoVZ8YuMufjl6vS+3fLt6K3wRZUX+zivnQ7NWnDMmidAY2unoXkJjnXk3BhVBAMx21biuWPrBJWLIoWUogG91MEsmga8tYsgcp0e5WGuSKdU7tkwP2Qv+Y74M= Received: by 10.78.176.20 with SMTP id y20mr2013205hue.1180965933731; Mon, 04 Jun 2007 07:05:33 -0700 (PDT) Received: by 10.78.190.11 with HTTP; Mon, 4 Jun 2007 07:05:33 -0700 (PDT) Message-ID: <70e8236f0706040705h6d459373n8fa83b32aeaca117@mail.gmail.com> Date: Mon, 4 Jun 2007 15:05:33 +0100 From: "Joao Barros" To: "Alexander Kabaev" In-Reply-To: <20070604091628.51e9632a@kan.dnsalias.net> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070604091628.51e9632a@kan.dnsalias.net> Cc: youshi10@u.washington.edu, current@freebsd.org Subject: Re: Kudos to everyone who worked on the gcc-4.2 merge X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Jun 2007 14:31:20 -0000 On 6/4/07, Alexander Kabaev wrote: > On Sun, 3 Jun 2007 17:30:15 -0700 (PDT) > youshi10@u.washington.edu wrote: > > > I just wanted to thank everyone who helped make the gcc 4.2 merge > > possible -- I can see a noticeable performance increase (1.5x ~ 2.0x > > load time decrease) in my server (P4 HTT with SMP). > > > > This will be one of the great changes that will put FreeBSD back on > > the map closer to many Linux distros. > > > > Once gcc 4.2.1 gets in the tree, things will be much better, I'm > > sure :). > > > > Thank you very much, and let me know if you need testing with gcc > > 4.2.1 when it rolls around ;). > > > > -Garrett > > > Thanks, but I think kudos are addressed to wrong people. I very much > doubt that GCC can be responsible for any, let alone dramatic, > performance differences. Most likely you see effects of hard work done > by SMP scalability guys. > > -- > Alexander Kabaev > > I emailed Garrett but forgot to cc current@ My question was: "Can you specify the workload that you verify that much improvement?" Like you I had my doubts gcc was responsible for such an improvement. -- Joao Barros