Date: Thu, 20 Dec 2007 12:14:49 -0500 From: Joshua Coombs <jcoombs@gwi.net> To: freebsd-stable@freebsd.org Subject: Re: FreeBSD 7 on old SMP server? Message-ID: <fke7ua$k5o$1@ger.gmane.org> In-Reply-To: <200712201706.lBKH6fwn067680@lurza.secnetix.de> References: <fk927j$3pm$1@ger.gmane.org> <200712201706.lBKH6fwn067680@lurza.secnetix.de>
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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
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