From owner-freebsd-current@FreeBSD.ORG Mon Jun 4 15:27:37 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 6D42416A421 for ; Mon, 4 Jun 2007 15:27:37 +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 4B38113C45B for ; Mon, 4 Jun 2007 15:27:37 +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 l54FRaTj020547 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 4 Jun 2007 08:27:37 -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 l54FRaZI017973 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 4 Jun 2007 08:27:36 -0700 Message-ID: <46642F68.9050102@u.washington.edu> Date: Mon, 04 Jun 2007 08:27:36 -0700 From: Garrett Cooper User-Agent: Thunderbird 2.0.0.0 (Windows/20070326) MIME-Version: 1.0 To: Alexander Kabaev References: <20070604091628.51e9632a@kan.dnsalias.net> In-Reply-To: <20070604091628.51e9632a@kan.dnsalias.net> 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 15:27:37 -0000 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. > > Ok. Interesting. All the changes I could see were at the kernel level (I saw a speed improvement after installing the kernel, before I ran make installworld). -Garrett