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Date: Sat, 14 Jan 2012 11:02:13 +0100 (CET)
From: Marco Beishuizen <mbeis@xs4all.nl>
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To: Mark Blackman <mark@exonetric.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: no hyperthreading in FreeBSD 9?
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Reply-To: Marco Beishuizen <mbeis@xs4all.nl>
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On Fri, 13 Jan 2012, the wise Mark Blackman wrote:

> On 13 Jan 2012, at 16:30, Marco Beishuizen wrote:
>
>> Hi,
>>
>> I just upgraded from 8-STABLE to 9-STABLE on my dual Xeon (nocona). Now I have in my boot messages:
>> ...
>> root: /etc/rc.d/sysctl: WARNING: sysctl machdep.hlt_logical_cpus does not exist.
>> root: /etc/rc.d/sysctl: WARNING: sysctl machdep.hyperthreading_allowed does not exist.
>> ...
>>
>> So isn't hyperthreading not available anymore in FreeBSD 9?
>
> http://svnweb.freebsd.org/base/release/9.0.0/UPDATING?r1=222852&r2=222853&
>
> Seems to imply HT is enabled by default and new sysctls are used to take
> logical CPUs offline.
>
> How many CPUs does your boot message suggest FreeBSD 9 is reporting?

Yeah, I just deleted the lines from sysctl.conf and it doesn't seem to 
make a difference at all (2 cpu's x 2 threads).

Sorry,
Marco
-- 
Who on earth would eat a charred caterpillar!?
No, no, you SINGE 'em!  You SINGE 'em and eat 'em!