Date: Thu, 15 Mar 2001 21:53:12 -0600 From: Mike Meyer <mwm@mired.org> To: "Dorr H. Clark" <dclark@applmath.scu.edu> Cc: questions@freebsd.org Subject: Re: MP & FreeBSD Message-ID: <15025.36392.539952.340643@guru.mired.org> In-Reply-To: <22904716@toto.iv>
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Dorr H. Clark <dclark@applmath.scu.edu> types: > 1) According to the release notes for 4.1.1, > SMP is not considered a base capability of the OS. > Is there a separate baseline which is an > experimental SMP, or are the changes hidden > behind a particular build flag? If there > is a baseline & it is open, can I find out > a link for downloads? The baseline kernel includes the SMP code. However, it's a kernel option that must be enabled at build time. > 2) What is the earliest revision of FreeBSD > which will boot both CPUs on a dual CPU board? > Are the changes coherently archived, or do > they need to be extracted from CVS somewhere? 3.0. It's been in the base kernel code since then. > 3) Is there an individual or group leading the > SMP development? What are the issues which keep > this from being a mainstream capability? > I can't promise any useful output from my work > but I'd be happy to help with forward progress > if possible. I'm sure there are people who could be considered to be leading the development, but I'm not sure who they are. At this point, pretty much everyone working on the kernel has to deal with SMP. I'd say it's already a mainstream capability. It's just not enabled by default. I expect it's of low enough utility that it's deemed not worth the cost. Then again, it might just cause horrible things to happen on some older (386 or 486) UP boards. <mike -- Mike Meyer <mwm@mired.org> http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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