trouble with HT

Kris Kennaway kris at
Wed Apr 4 16:00:06 UTC 2007

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 
> ( 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.

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