Date: Fri, 9 May 1997 21:11:14 -0400 (EDT) From: Chuck Robey <chuckr@mat.net> To: Terry Lambert <terry@lambert.org> Cc: Steve Passe <smp@csn.net>, james@westongold.com, smp@FreeBSD.ORG Subject: Re: maptable of SuperMicro P6DNH Message-ID: <Pine.BSF.3.91.970509210708.18685s-100000@Journey2.mat.net> In-Reply-To: <199705100043.RAA01343@phaeton.artisoft.com>
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On Fri, 9 May 1997, Terry Lambert wrote: > > I don't see it happening. There are major differences in the hardware on > > an SMP motherboard and a UP motherboard. The software differences are much > > more than just locking. A completely different INTerrupt sub-system is in > > order. Different scheduling strategies will be in place. The list goes on... > > Even if you could engineer it so that there was less than 5% cost at runtime, > > why should a UP user have to pay that cost. > > To encourage better (APIC-using) UP boards? > > Seriously, the MP boards are typically *better* than the UP boards > because they have more hurdles. The UP boards *should* jump the same > hurdles -- it would make for faster UP boards, for one thing, and > faster generic OS code, for another. I'm surprised there isn't a > push for this from MS on the basis of NT... heck, maybe there is? I don't know for sure, but I right now suspect FreeBSD is considerably ahead of MS in terms of stability on MP. I had to have a MS Windows environment this last semester, for an OS project I had to do. I tried installing NT on my SMP platform, which runs FreeBSD-SMP just ducky. Results were not good, it kept on panicing on install. I'm not a MS genius, and I had a friend who let me use her platform, so I let it go (I didn't want to run NT all that badly anyhow), but I am left with the feeling that maybe our SMP is more stable than their SMP. Of course, that's not really a surprise, is it? > > > Terry Lambert > terry@lambert.org > --- > Any opinions in this posting are my own and not those of my present > or previous employers. > > ----------------------------+----------------------------------------------- Chuck Robey | Interests include any kind of voice or data chuckr@eng.umd.edu | communications topic, C programming, and Unix. 9120 Edmonston Ct #302 | Greenbelt, MD 20770 | I run Journey2 and picnic, both FreeBSD (301) 220-2114 | version 3.0 current -- and great FUN! ----------------------------+-----------------------------------------------
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