Date: Wed, 4 Apr 2007 12:00:04 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Andrea Milani <andre.mil@tiscali.it> Cc: freebsd-questions@freebsd.org Subject: Re: trouble with HT Message-ID: <20070404160004.GA59829@xor.obsecurity.org> In-Reply-To: <4613848B.5080306@tiscali.it> References: <20070403194555.4a9d1f2f.freebsd@dfwlp.com> <20070404005721.GA19966@xor.obsecurity.org> <20070403212527.b94753ea.freebsd@dfwlp.com> <4613848B.5080306@tiscali.it>
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[-- Attachment #1 --] On Wed, Apr 04, 2007 at 12:57:15PM +0200, Andrea Milani wrote: > Jonathan Horne wrote: > >well, wikipedia says this (something that i just now learned about > >standard pentium4 line of processors) > >[wikipedia] > >HyperThreading was present in all Northwood CPUs, but was disabled in the > >core in all but the 3.06 GHz model. > >[/wikipedia] > > > > That's not true. I have a 2.6 GHz Northwood, and it supports > HyperThreading (however I'm not running FreeBSD on it, so I can't help > you with SMP). > You can use the Intel Processor Spec Finder > (http://processorfinder.intel.com/) to discover the capabilities of your > CPU, but I think the "HTT" that appears in the dmesg output stands for > Hyper Threading Technology. The 'HTT' feature bit says the CPU can be queried about whether it supports HTT, not that it supports it. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFGE8uEWry0BWjoQKURArfIAJ4nE38b05H9kLcEpJfEdlKa1po1JQCfdJ0N L57CqJdL9pFvySM7nbOjRb8= =KDpK -----END PGP SIGNATURE-----
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