only one logical CPU used in Xeon

[John Baldwin]

On Wednesday 11 March 2009 11:01:51 am Oliver Fromme wrote:
> Here's how you can see the details in the demsg output:
> The older machine:
> 
>  > Features = 0xbfebfbff <...,HTT,...>
> 
> The "HTT" bit in the features bitmask indicates that the
> processor supports hyperthreading.

No, that flag just means it supports a register where you can ask for the 
total number of threads/cores per package.  Multi-core CPUs that don't have 
hyperthreads have 'HTT' set, but when you read the registers properly you see 
that they have 1 thread per core.

-- 
John Baldwin