Date: Sat, 16 Mar 2002 13:55:40 -0800 From: Peter Wemm <peter@wemm.org> To: Sergey Babkin <babkin@bellatlantic.net> Cc: Terry Lambert <tlambert2@mindspring.com>, Alfred Perlstein <bright@mu.org>, Jordan Hubbard <jkh@winston.freebsd.org>, hackers@FreeBSD.ORG Subject: Re: Interesting sysctl variables in Mac OS X with hw info Message-ID: <20020316215540.138EB38CC@overcee.wemm.org> In-Reply-To: <3C93B5CF.CB4CCE71@bellatlantic.net>
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Sergey Babkin wrote: > Terry Lambert wrote: > > > > It got really bogged down when someone pointed out that > > they were running CPUs with different clock rates in their > > SMP box, just to see what the net effect would be. THe > > As far as I understand, you just physically can't do it: > the P-II CPU initialization depends on all the CPUs on the > bus running at the same rate. Or if you can do it then you still > should never do it. Unless you actually have a NUMA machine > (as opposed to an SMP machine). Nope, you most certainly can do this, I have such a box. One cpu is running at 866MHz, the other at 933MHz. The front-side-bus is the same speed though (133MHz), just the internal clock multiplier within the cpu is different. Cheers, -Peter -- Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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