HTT on single CPU?
John Baldwin
jhb at FreeBSD.org
Tue Jul 8 10:13:35 PDT 2003
On 08-Jul-2003 Lukas Ertl wrote:
> On Tue, 8 Jul 2003, Marco Wertejuk wrote:
>
>> Hi Lukas,
>>
>> | how do I enable Hyperthreading on a box that has just a single CPU?
>>
>> you just have to enable Hyperthreading in the computers
>> BIOS and compile a SMP Kernel with options HTT.
>
> I would need to look a second time, but there is no such BIOS option, and
> "options HTT" was nuked in 5.1, replaced by machdep.hlt_logical_cpus,
> which I don't have on my system.
You need to enable SMP and APIC_IO in your kernel to use HTT. Also,
the BIOS setting probably won't make a difference.
--
John Baldwin <jhb at FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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