[plug] hyperthreading

[Tony Breeds]

On Wed, Dec 10, 2003 at 02:44:35PM +0800, smclevie wrote:
> Hi all,
> 
> I wonder if someone could inform me of the necessary steps to enable 
> hyperthreading (P4 2.4G Pentium)?

Select pIV as your processor
Enable Smymetric Multiprocessing
Enable ACPI (at the veryleast enable "ACPI CPU enumeration only"

when you build your kernel
 
> I thought I had enabled the option in a kernel build ...

The kernel I built for you was (but I guess it's loong gone now).  You
can tell for sure by grepping /proc/cpuinfo for the string "^proc"

ie.
  pythia:~# grep ^proc /proc/cpuinfo
  processor       : 0
  processor       : 1
Is a hyperthreading pIV

  balder:~# grep ^proc /proc/cpuinfo
  processor       : 0
Is a pIII non-nt machine.

> I would like to see two tuxes at the top of screen also.

That will only work if you enable frame-buffer support at the kernel
build time.  It will only last until you start X or you run your first
"clear" on the console.

Yours Tony

        Linux.Conf.AU       http://conf.linux.org.au/
        Jan 12-17 2004      The Australian Linux Technical Conference!