Date: Fri, 9 May 1997 17:43:19 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: smp@csn.net (Steve Passe) Cc: james@westongold.com, smp@FreeBSD.ORG Subject: Re: maptable of SuperMicro P6DNH Message-ID: <199705100043.RAA01343@phaeton.artisoft.com> In-Reply-To: <199705092325.RAA15100@Ilsa.StevesCafe.com> from "Steve Passe" at May 9, 97 05:25:00 pm
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> 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? Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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