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Date: Wed, 01 Feb 2006 01:24:50 -0500
From: Mike Jakubik <mikej@rogers.com>
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To: John Von Essen <john@essenz.com>
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Cc: freebsd-stable@freebsd.org
Subject: Re: 6-stable and HTT P4
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John Von Essen wrote:
> Did all that.
>
> Just got it to work though... Had to add 
> machdep.hyperthreading_allowed=1 to loader.conf in addition to 
> hlt_logical_cpus=0

Great. FYI, HTT will give you little or even negative performance benefits.