From owner-freebsd-stable@FreeBSD.ORG Thu Oct 12 18:11:55 2006 Return-Path: X-Original-To: freebsd-stable@FreeBSD.ORG Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A7F1216A543 for ; Thu, 12 Oct 2006 18:11:55 +0000 (UTC) (envelope-from petefrench@ticketswitch.com) Received: from mail.ticketswitch.com (mail.ticketswitch.com [194.200.93.188]) by mx1.FreeBSD.org (Postfix) with ESMTP id 34F5443DE6 for ; Thu, 12 Oct 2006 18:08:48 +0000 (GMT) (envelope-from petefrench@ticketswitch.com) Received: from [172.16.1.6] (helo=dilbert.firstcallgroup.co.uk) by mail.ticketswitch.com with esmtp (Exim 4.60 (FreeBSD)) (envelope-from ) id 1GY4yz-000FOt-Ah; Thu, 12 Oct 2006 19:08:37 +0100 Received: from petefrench by dilbert.firstcallgroup.co.uk with local (Exim 4.61 (FreeBSD)) (envelope-from ) id 1GY4yw-000MUh-QT; Thu, 12 Oct 2006 19:08:34 +0100 To: mike@urgle.com, olli@lurza.secnetix.de In-Reply-To: <20061012162003.GA56821@wafer.urgle.com> Message-Id: From: Pete French Date: Thu, 12 Oct 2006 19:08:34 +0100 Cc: rebehn@ant.uni-bremen.de, freebsd-stable@FreeBSD.ORG Subject: Re: Another whirl with FreeBSD X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Oct 2006 18:11:55 -0000 > Doesn't the increased number of registers available when running amd64 > really, really help when compared with the traditionally register-starved > i386? Yes, it seems to - evereything soemone else said about context switch verhead and compiles is true of course, but the FreeBSD compiler seems to be able to take advantgae of those registers, and everything I have measured on my home box has come out faster, if only by a few percentage points. But the only way for any particular users workload is to try it for themselves. Personally I think everything will end up 64 bit, so am just making the move now for the hell of it. Moved the Windows boxes first as they are expendable (though actually XP x64 is a lot more stable than the original XP pro I was running) and then moved the BSD machines over a few months later after doing a lot of testing. Have no regrets whatsoever. -pete.