From owner-freebsd-stable@FreeBSD.ORG Thu Dec 20 18:13:47 2007 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0C38C16A420 for ; Thu, 20 Dec 2007 18:13:47 +0000 (UTC) (envelope-from freebsd-stable@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id AC7A013C457 for ; Thu, 20 Dec 2007 18:13:46 +0000 (UTC) (envelope-from freebsd-stable@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1J5PTo-0007Ic-8p for freebsd-stable@freebsd.org; Thu, 20 Dec 2007 17:46:44 +0000 Received: from murdoc.gwi.net ([207.5.142.8]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 20 Dec 2007 17:46:44 +0000 Received: from jcoombs by murdoc.gwi.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 20 Dec 2007 17:46:44 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-stable@freebsd.org From: Joshua Coombs Date: Thu, 20 Dec 2007 12:14:49 -0500 Lines: 24 Message-ID: References: <200712201706.lBKH6fwn067680@lurza.secnetix.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: murdoc.gwi.net User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) In-Reply-To: <200712201706.lBKH6fwn067680@lurza.secnetix.de> Sender: news Subject: Re: FreeBSD 7 on old SMP server? 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, 20 Dec 2007 18:13:47 -0000 Oliver Fromme wrote: > > > My hacked up 386 showed gains going from 6.2 to 7, the big win that I've > > noticed is scp throughput, I can sustain 40 to 45kbps where in the past > > the box walled at around 30kbps. Apache seems to have less latency > > responding to gets also. I'm just running a 7b3 kernel at the moment, > > I'm going to have to repartition with a lot more swap space to be able > > to build a 7 world (When did the ram use for a buildworld skyrocket?!) > > but even with this setup, 7 + ULE is a win for me. > > Are you saying you run FreeBSD 7 on an 80386(SX/DX) machine? > How exactly did you hack it? As far as I know, support for > 80386 processors was removed from FreeBSD a while ago. For a very short while with 6.0 I was tweaking the kernel to detect 386s as 486s, as well as using CPU_DISABLE_CMPXCHG and having ok luck. I've now got a Cyrix 486DrX-2 66 installed in place of my Am386DX-40, which supports CMPXCHG as well as ID'ing as a 486 so I don't need to do any tweaking to stay running. If I can get another viable 386DX box reassembled I'll see if 7 can be pressed into functioning on it as 6 could. Joshua Coombs