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Newsgroups: comp.os.386bsd.misc Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!bunyip.cc.uq.oz.au!munnari.oz.au!spool.mu.edu!howland.reston.ans.net!usc!elroy.jpl.nasa.gov!decwrl!netcomsv!ix.netcom.com!netcom.com!jmonroy From: jmonroy@netcom.com (Jesus Monroy Jr) Subject: Re: dual procesor motherboards the way forward? Message-ID: <jmonroyCx10rt.4FF@netcom.com> Organization: NETCOM On-line Communication Services (408 261-4700 guest) X-Newsreader: TIN [version 1.2 PL1] References: <Cww6x9.1A0@gnome.co.uk> <36hous$fdv@exile.oec.com> Date: Sun, 2 Oct 1994 03:38:17 GMT Lines: 40 Jim Doyle (doyle@OEC.COM) wrote: : : Would it : : be better to just place the kernel on one processor and run all other : : processes on the other; or some form of dynamic load balance which : : will have some overhead? Anyway I am sure the FreeBSD and NetBSD teams : : could have some fun with this after they have tired with porting 4.4 : : BSD. : This sort of evil non-canonical SMP has been attempted by other : vendors before.. : I'd say your best bet is to wait until the LiteSS or LinuxSS : single-servers become available.. Port Mach 3.0 to your MP hardware : platform an use that. Since the Unix single-server relies upon the : Mach kernel to schedule threads onto the processor pool, it should be : cleaner to achieve a real SMP Unix implementation. : I disagree with both your premises. I beleive, first, that the Mach kernel "model" is inefficent and is not a good choice for SMP. Bill Jolitz agrees to an extent with me. He has thrown out the Mach memory manager from 386bsd; claiming - it was getting in the way. I state that the thread management and thread scheme are definitely in the way. So without getting into theoritical (sp?) discussions. I'd say wait for 386bsd Release 1.0. Reason: Bill has had a Compac MP machine in-house and has found many inconsistences in MACH design or traditional thing. -- Jesus Monroy Jr jmonroy@netcom.com Zebra Research /386BSD/device-drivers /fd /qic /clock /documentation ___________________________________________________________________________