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Date:      Mon, 23 Sep 2002 09:40:01 -0400 (EDT)
From:      John Baldwin <jhb@FreeBSD.org>
To:        Terry Lambert <tlambert2@mindspring.com>
Cc:        smp@freebsd.org, beemern <beemern@ksu.edu>
Subject:   Re: For those with P4 SMP problems..
Message-ID:  <XFMail.20020923094001.jhb@FreeBSD.org>
In-Reply-To: <3D8CBE7D.877EA3A4@mindspring.com>

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On 21-Sep-2002 Terry Lambert wrote:
> beemern wrote:
>> i'm preparing to start in on Terry Lambert's suggestion, however,
>> perhaps you (anyone) could clear up a few minor questions..
>> 
>> -he says other systems are "matching CPUs started at the time of the
>> check"
>> ..matching them with what?
> 
> The theory is that the BIOS has the corect information, but in the
> wrong order, and FreeBSD cares about the order, but Linux and Windows
> do not, because they;ve performed an additional optimization that lets
> them start the APs simultaneously, and a side effect of this is that
> they don't care about order of start, they just care *that* they start.

Except that in this case we have a 2-cpu system so we are only starting
one additional processor.  Hence, this entire argument is irrelevant.

-- 

John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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