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Date: Wed, 12 Jan 2005 18:29:01 +1300
From: Jonathan Chen <jonc@chen.org.nz>
To: Bryan Fullerton <fehwalker@gmail.com>
Message-ID: <20050112052901.GA61033@osiris.chen.org.nz>
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cc: freebsd-questions@freebsd.org
Subject: Re: Hyperthreading hurts 5.3?
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On Wed, Jan 12, 2005 at 12:02:37AM -0500, Bryan Fullerton wrote:
> On Tue, 11 Jan 2005 23:52:11 -0500, Timothy Luoma <lists@tntluoma.com> wrote:
> > 
> > sorry to be dense, but which should be enough, BIOS or conf file?
> > 
> > is the default to use or not use hyperthreading in the kernel/conf?
> 
> By default the system will detect a HTT processor, but can only launch
> the second 'virtual' CPU core if you recompile the kernel with the SMP
> option enabled.

Not true on 5.3+ GENERIC systems. If you look at dmesg, you'll see the
second virtual CPU launched as well as the extra column in top(1) if
you enable HTT in the BIOS.
-- 
Jonathan Chen <jonc@chen.org.nz>
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