Re: Xeon processors &&Hyper-Threading

[Mark Watts]

> You recompile the kernel for SMP as well as P4. If the motherboard
> hasn't disabled HT capabilities, you will take full advantage of
> the processor under Linux. Whatever "full advantage" means, is
> not absolute, but whatever it is, will be used to its fullest.
> Basically, if the code is I/O bound, you'll not see any difference.
> If the code is compute-intensive, you will.

I discovered that you need the 'CPU Enumeration' part of ACPI to be enabled 
otherwise the kernel only sees physical processors, not sibling HT processors 
- shouldnt this be selected automatically when you select SMP ?