From owner-freebsd-questions@FreeBSD.ORG Thu Jul 31 01:52:14 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B49AD37B401; Thu, 31 Jul 2003 01:52:14 -0700 (PDT) Received: from bluejay.mail.pas.earthlink.net (bluejay.mail.pas.earthlink.net [207.217.120.218]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0D1E243FBD; Thu, 31 Jul 2003 01:52:14 -0700 (PDT) (envelope-from tlambert2@mindspring.com) Received: from user-38lc0sl.dialup.mindspring.com ([209.86.3.149] helo=mindspring.com) by bluejay.mail.pas.earthlink.net with asmtp (SSLv3:RC4-MD5:128) (Exim 3.33 #1) id 19i9AS-0006I5-00; Thu, 31 Jul 2003 01:52:13 -0700 Message-ID: <3F28D884.FB243E9D@mindspring.com> Date: Thu, 31 Jul 2003 01:51:16 -0700 From: Terry Lambert X-Mailer: Mozilla 4.79 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: John Baldwin References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-ELNK-Trace: b1a02af9316fbb217a47c185c03b154d40683398e744b8a40ed3f422d33198a1540d9dfc70ad3078548b785378294e88350badd9bab72f9c350badd9bab72f9c cc: freebsd-smp@freebsd.org cc: freebsd-questions@freebsd.org Subject: Re: PIII SMP X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2003 08:52:15 -0000 John Baldwin wrote: > > You may not be happy with P III's. I'm not sure if the SMP code > > has been changed to handle only the xAPIC now, or not; there was > > a discussion a little while back about supporting more than 16 > > CPUs in a machine, which would require this change. > > Adding support for xAPICs isn't going to break P3 machines. Less > FUD please. One of my test machines is a dual ppro 200 and although > I haven't booted it in a while it ran current just fine the last > time I tried. I'm not trying to FUD. It wasn't clear to me at the time whether the discussion was geared toward having both APIC and xAPIC support, or only xAPIC support. Maybe you could clear that up. I'm not happy with my Circa 1996 dual P90 box. It's not inconceivable that non-xAPIC processors might get deprecated in the rush to more than 16 CPU's, like my ASUS dual P90 box seems to have been. Also, the recent change to make SSE instructions the build default also bit me on one of my machines without SSE support. -- Terry