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Date:      Fri, 13 Jan 2012 16:48:21 +0000
From:      Mark Blackman <mark@exonetric.com>
To:        Marco Beishuizen <mbeis@xs4all.nl>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: no hyperthreading in FreeBSD 9?
Message-ID:  <26D6A1AE-292A-4EA0-B7E0-89789C1BCE30@exonetric.com>
In-Reply-To: <alpine.BSF.2.00.1201131724570.2982@yokozuna.lan>
References:  <alpine.BSF.2.00.1201131724570.2982@yokozuna.lan>

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On 13 Jan 2012, at 16:30, Marco Beishuizen wrote:

> Hi,
>=20
> 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.
> ...
>=20
> So isn't hyperthreading not available anymore in FreeBSD 9?

=
http://svnweb.freebsd.org/base/release/9.0.0/UPDATING?r1=3D222852&r2=3D222=
853&

Seems to imply HT is enabled by default and new sysctls are used to take=20=

logical CPUs offline.

How many CPUs does your boot message suggest FreeBSD 9 is reporting?

- Mark=



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