From owner-freebsd-performance@FreeBSD.ORG Mon May 2 21:05:05 2005 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 08D5516A4CF for ; Mon, 2 May 2005 21:05:05 +0000 (GMT) Received: from mail.rfnj.org (ns1.rfnj.org [66.180.172.156]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5045A43D81 for ; Mon, 2 May 2005 21:05:04 +0000 (GMT) (envelope-from asym@rfnj.org) Received: from megalomaniac.rfnj.org (ool-45736df1.dyn.optonline.net [69.115.109.241]) by mail.rfnj.org (Postfix) with ESMTP id 740F7173; Mon, 2 May 2005 17:05:04 -0400 (EDT) Message-Id: <6.2.1.2.2.20050502170756.037186b0@mail.rfnj.org> X-Mailer: QUALCOMM Windows Eudora Version 6.2.1.2 Date: Mon, 02 May 2005 17:11:02 -0400 To: Sten Daniel =?iso-8859-1?Q?S=F8rsdal?= , Mike Tancsa From: Allen In-Reply-To: <42763F28.7020502@wm-access.no> References: <6.2.1.2.0.20050501094429.06974910@64.7.153.2> <42763F28.7020502@wm-access.no> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1"; format=flowed Content-Transfer-Encoding: quoted-printable cc: freebsd-performance@freebsd.org Subject: Re: 64bit CPUs X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 May 2005 21:05:05 -0000 At 10:54 5/2/2005, Sten Daniel S=F8rsdal wrote: >Mike Tancsa wrote: > > A somewhat obvious question to some perhaps, but what server application > > mix on FreeBSD today sees an improvement using 64bit CPUs ? In my ISP > > centric world, my big apps are BIND, IMAP/POP3, httpd via apache, SMTP, > > AV and SPAM scanning, and firewalls/routing. Apart from larger RAM, why > > would these benefit from the 64bit world ? Or would they ? > >Any application that would benefit from being able to copy 64 bits at a >time, i assume. Video applications and perhaps some encryption >applications. Perhaps IPv6 core would have a slight benefit (although >probably not with current code). Almost all the applications that you >mention are doing mostly string operations (afaik). Perhaps VPN tunnels >could benefit (unless of course you use hardware vpns like we do). The real benefit for ISP servers comes in from the 64bit address space, not= =20 the 64bit registers, though they can help out occasionally in those=20 workloads as you mentioned. Having 1MB+ of L2 cache, and supporting 20+GB of memory are the real wins=20 in your case.