Re: HyperThreading CPUs under Debian
On Mon, 2003-09-29 at 13:19, Greg Norris wrote:
> On Mon, Sep 29, 2003 at 12:09:18PM +0100, Andrew Ingram wrote:
> > Can anyone tell me if there is anything special I should enable in my
> > kernel (or any other Debian configuration) to make the most out of an
> > Intel P4 processor with HyperThreading? Just realised my kernel has SMP
> > disabled which might have been a mistake, but I can't find a definitive
> > answer by googling.
>
> You need to enable SMP, and also ACPI CPU Enumeration... either
> CONFIG_ACPI_HT_ONLY or CONFIG_ACPI_PROCESSOR. In the former case, you
> may also need to use the boot parameter "acpismp=force". If memory
> serves, it's no longer required as of 2.4.22.
Thanks for the responses guys.
I'm running 2.4.22. So if I understand you right, I need to enable SMP,
and also CONFIG_ACPI_HT_ONLY or CONFIG_ACPI_PROCESSOR (I assume only one
of these will actually be available).
Sounds easy enough! Might explain why my BIOS logo doesn't sport the
"HT" after a reboot of Linux, but does after a reboot of Win XP (which
recognises 2 CPUs).
Thanks,
Andy
Reply to: