From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.62) (envelope-from ) id 1IBtlw-0004Zd-Px for garchives@archives.gentoo.org; Fri, 20 Jul 2007 14:48:01 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.14.0/8.14.0) with SMTP id l6KEhBjW016345; Fri, 20 Jul 2007 14:43:11 GMT Received: from euclid.r.igoro.us (209-242-5-195.rev.dls.net [209.242.5.195]) by robin.gentoo.org (8.14.0/8.14.0) with ESMTP id l6KEhAIn016311 for ; Fri, 20 Jul 2007 14:43:11 GMT Received: by euclid.r.igoro.us (Postfix, from userid 9000) id AF1046C1B; Fri, 20 Jul 2007 09:43:10 -0500 (CDT) Date: Fri, 20 Jul 2007 09:43:10 -0500 From: "Dustin J. Mitchell" To: gentoo-amd64@lists.gentoo.org Subject: Re: [gentoo-amd64] 32 or 64 for web server and mysql Message-ID: <20070720144310.GJ3830@v.igoro.us> References: <46A0B6C6.5000803@singnet.com.sg> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-amd64@gentoo.org Reply-to: gentoo-amd64@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <46A0B6C6.5000803@singnet.com.sg> X-PGP-Key: http://people.cs.uchicago.edu/~dustin/pubkey.txt User-Agent: mutt-ng/devel-r804 (Linux) X-Archives-Salt: 09f24e68-cdcd-4152-b629-d089b9aa6f66 X-Archives-Hash: 5436a7df3652302e7aebbb548addf5ac On Fri, Jul 20, 2007 at 09:21:10PM +0800, P.V.Anthony wrote: > The reason for this questions is that there are some information on the > net that says that there is no much difference between them. > Is that true? Thought that 64bit is always better. Building a system 64-bit buys you: - wider integers (so math with 64-bit integers is faster) - wider pointers (so an application can have a *lot* more address space allocated to it) - bigger binaries and data structures (so more RAM consumed) - future-proofing (in a few years, 32-bit hardware will not be available new) There's no "better" and it's not inherently faster in any way. As another poster said, most UNIX apps have been running 64-bit on other architectures (SPARC being the most common) for years, so compatibility isn't a big deal. Those are the points on which I base my 32/64 decisions. Dustin -- gentoo-amd64@gentoo.org mailing list