From owner-freebsd-questions@FreeBSD.ORG Thu Sep 18 05:28:37 2008 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E9AC21065676 for ; Thu, 18 Sep 2008 05:28:36 +0000 (UTC) (envelope-from andrewberry@sentex.net) Received: from ccshst09.cs.uoguelph.ca (ccshst09.cs.uoguelph.ca [131.104.94.206]) by mx1.freebsd.org (Postfix) with ESMTP id A4B6D8FC16 for ; Thu, 18 Sep 2008 05:28:36 +0000 (UTC) (envelope-from andrewberry@sentex.net) Received: from robin.cs.uoguelph.ca (robin.cs.uoguelph.ca [131.104.93.49]) by ccshst09.cs.uoguelph.ca (8.13.1/8.13.1) with ESMTP id m8I5G4HX006178 for ; Thu, 18 Sep 2008 01:16:04 -0400 Received: from blizzard.lan (p39agas2a.dsl.sentex.ca [206.130.91.39] (may be forged)) (authenticated bits=0) by robin.cs.uoguelph.ca (8.13.4/8.13.4) with ESMTP id m8I5G1We000396 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO) for ; Thu, 18 Sep 2008 01:16:01 -0400 Message-Id: <7D3E2F4C-5CF8-4DCA-8B8F-5AF2015250B1@sentex.net> From: Andrew Berry To: questions@freebsd.org Content-Type: multipart/signed; boundary=Apple-Mail-843-742111285; micalg=sha1; protocol="application/pkcs7-signature" Mime-Version: 1.0 (Apple Message framework v929.2) Date: Thu, 18 Sep 2008 01:16:03 -0400 X-Mailer: Apple Mail (2.929.2) X-Spam-Scanner: SpamAssassin 3.000004 (http://www.spamassassin.org/) on robin.cs.uoguelph.ca X-Spam-Score: hits=0.0 X-Spam-Level: X-Spam-Tests: FORGED_RCVD_HELO,SPF_PASS X-Spam-Status: Suspected X-Scanned-By: MIMEDefang 2.63 on 131.104.94.206 X-Scanned-By: MIMEDefang 2.52 on 172.17.94.86 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Subject: Upgrading to 64 bit from a 32 bit installation on FBSD 7 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Sep 2008 05:28:37 -0000 --Apple-Mail-843-742111285 Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Hi, I've got a server which will be upgraded to my "castoff" parts which support amd64. This machine has been running Freebsd since the 5.0 RC's, starting on a P2 233Mhz, upgraded incrementally for a few years - a real testament to the stability of a FreeBSD install! What I've done in the past while upgrading is simply move the drive, and rebuild everything with an updated make.conf optimized for the new processor. Can I simply rebuild the world (or use freebsd-update), and portupgrade everything to rebuild for amd64? Or, will things break as libraries are upgraded which still have 32-bit dependancies on the system? Also, AFAIK upgrading to a 64 bit system allows access to additional registers on the CPU, leading to a performance increase. The system will only have 1.5 gigs of RAM, so that's not an issue, but are there any benchmarks out there comparing performance on < 4GB hardware with 32 bit and 64 bit Freebsd? Thanks! --Andrew --Apple-Mail-843-742111285--