From owner-freebsd-current@FreeBSD.ORG Mon Jun 4 15:26:35 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 ED2AE16A400 for ; Mon, 4 Jun 2007 15:26:35 +0000 (UTC) (envelope-from youshi10@u.washington.edu) Received: from mxout5.cac.washington.edu (mxout5.cac.washington.edu [140.142.32.135]) by mx1.freebsd.org (Postfix) with ESMTP id C994813C44C for ; Mon, 4 Jun 2007 15:26:35 +0000 (UTC) (envelope-from youshi10@u.washington.edu) Received: from smtp.washington.edu (smtp.washington.edu [140.142.33.9] (may be forged)) by mxout5.cac.washington.edu (8.13.7+UW06.06/8.13.7+UW07.05) with ESMTP id l54FQZI4020230 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 4 Jun 2007 08:26:35 -0700 X-Auth-Received: from [192.168.10.45] (c-67-166-149-71.hsd1.ca.comcast.net [67.166.149.71]) (authenticated authid=youshi10) by smtp.washington.edu (8.13.7+UW06.06/8.13.7+UW07.03) with ESMTP id l54FQYSF017783 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 4 Jun 2007 08:26:34 -0700 Message-ID: <46642F2A.8000501@u.washington.edu> Date: Mon, 04 Jun 2007 08:26:34 -0700 From: Garrett Cooper User-Agent: Thunderbird 2.0.0.0 (Windows/20070326) MIME-Version: 1.0 To: Joao Barros References: <20070604091628.51e9632a@kan.dnsalias.net> <70e8236f0706040705h6d459373n8fa83b32aeaca117@mail.gmail.com> In-Reply-To: <70e8236f0706040705h6d459373n8fa83b32aeaca117@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-PMX-Version: 5.3.1.294258, Antispam-Engine: 2.5.1.298604, Antispam-Data: 2007.6.4.80535 X-Uwash-Spam: Gauge=IIIIIII, Probability=7%, Report='__CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __HAS_MSGID 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __SANE_MSGID 0, __USER_AGENT 0' Cc: 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 15:26:36 -0000 Joao Barros wrote: > 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. > > The differences I saw (ok, limited), were a decrease in bootup time (about 15-30 seconds faster), login via ssh (almost instantaneous when the sshd thread seemingly hasn't gone to sleep), restarting the samba daemon (3 seconds to ~1 second), and running make buildworld and installworld. The only thing that I've noticed so far is that acpi is broken again... I was shocked when I hit my power button and my machine instantly shut off 0_0... Synced to HEAD yesterday and rebuilt. ASUS P4800DX motherboard with a P4 3.0GHz Northwood chip. -Garrett