From owner-freebsd-questions@FreeBSD.ORG Fri Oct 5 18:38:48 2007 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AF69216A417 for ; Fri, 5 Oct 2007 18:38:48 +0000 (UTC) (envelope-from mario.lobo@ipad.com.br) Received: from ipad.com.br (recife.ipad.com.br [200.249.204.129]) by mx1.freebsd.org (Postfix) with SMTP id CDDC313C44B for ; Fri, 5 Oct 2007 18:38:46 +0000 (UTC) (envelope-from mario.lobo@ipad.com.br) Received: (qmail 6659 invoked by uid 79); 5 Oct 2007 18:38:44 -0000 Received: from 192.168.64.1 by recife.ipad.com.br (envelope-from , uid 1008) with qmail-scanner-1.25-st-qms (clamdscan: 0.91.2-exp/4472. spamassassin: 3.1.8. perlscan: 1.25-st-qms. Clear:RC:1(192.168.64.1):. Processed in 0.020951 secs); 05 Oct 2007 18:38:44 -0000 X-Antivirus-IPAD-Mail-From: mario.lobo@ipad.com.br via recife.ipad.com.br X-Antivirus-IPAD: 1.25-st-qms (Clear:RC:1(192.168.64.1):. Processed in 0.020951 secs Process 6652) Received: from unknown (HELO lobo.ipad.com.br) (mario.lobo@ipad.com.br@192.168.64.1) by ipad.com.br with SMTP; 5 Oct 2007 18:38:44 -0000 From: Mario Lobo Organization: IPAD To: freebsd-questions@freebsd.org Date: Fri, 5 Oct 2007 15:39:00 -0300 User-Agent: KMail/1.9.7 References: <50409.192.168.64.1.1191606704.squirrel@webmail.ipad.com.br> <47068295.7020807@infracaninophile.co.uk> In-Reply-To: <47068295.7020807@infracaninophile.co.uk> X-Face: "j9,S@~?m[/.]/lb=?utf-8?q?S=5D=2EI=0A=09ITlWP=3A-?=" MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200710051539.01333.mario.lobo@ipad.com.br> Subject: Re: what cpu type to use for a intel duo e6850 (i386 or amd64) 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: Fri, 05 Oct 2007 18:38:48 -0000 On Friday 05 October 2007, Matthew Seaman wrote: > mario.lobo@ipad.com.br wrote: > > So, I did an SMP/i386 install. I cannot say I regret it since everything > > runs absolutely smooth and fast here. > > > > On the tecnical side (not practical) was it correct to give up 64 bit > > processing? > > This is a question to which there is no simple answer, other than > 'It depends.' > > What it depends on are such things as: > > * software compatibility with 32 or 64 bit system > > * what application load you require > > * how large the disk and memory structures you're dealing with are > > * how much RAM you have > > You'll find that programs like databases that have to do large > amounts of IO benefit greatly from being on a 64bit system, > especially if that system is fully populated with memory and disks. > > On the other hand, really compute-intensive programs can often gain > on a 32bit system by virtue of being able to fit more 32bit sized > objects into cache RAM. > > Desktops tend to be run at 32bit because of software compatibility > problems. Machines with Nvidia graphics cards need to be 32bit in > order to use the Nvidia accelerated graphics driver. > > As it is, for your server it seems that you have achieved that happy > performance level of "fast enough." Anything else is just gravy. > > Cheers, > > Matthew I have both types running (dual-core servers as 64 and dual-core desktops at 32). I was just curious as to what would happen if the roles were reversed. You sure cleared that up Thanks for the confirmation ! -- ********************************************************** //| //| Mario Lobo // |// | http://www.ipad.com.br // // ||||||| FreeBSD since 2.2.8 - 100% Rwindows-free **********************************************************