FreeBSD on dual core Opterons - stupid buildworld test

Sten Spans sten at blinkenlights.nl
Wed May 18 13:14:29 PDT 2005


On Wed, 18 May 2005, Astrodog wrote:

> On 5/18/05, Jung-uk Kim <jkim at niksun.com> wrote:
>>
>> FYI, Linux says:
>>
>> http://lxr.linux.no/source/include/asm-x86_64/cpufeature.h#L78
>> http://lxr.linux.no/source/arch/x86_64/kernel/setup.c#L834
>>
>> Jung-uk Kim
>>
>
> Opteron reports Hyperthreading, because it tries to take advantage of
> the licencing benifit. Keep in mind, HT P4s are counted as a single
> CPU for the most part, in a licence. Opteron may not. By acting as
> though its a HT processor, it gets that same benifit.

And some windows software only uses multiple threads
when htt is available ...

-- 
Sten Spans

"There is a crack in everything, that's how the light gets in."
Leonard Cohen - Anthem


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