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how to configure hyperthreading

how to configure hyperthreading

2004-02-18       - By Ed Wilts

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Reply:     1     2     3     4     5     6     7     8     9     10     >>  

On Wed, Feb 18, 2004 at 06:14:46AM -0800, a s p a s i a wrote:
> however, is there a kernel parameter that also controls
> this even if the BIOS has it turn on (i think in Intel XEON
> it is by default?) .... i only see 2 normal CPUs.

There is no kernel parameter for this in 2.4. As long as you 're running
an smp kernel, and the BIOS presents all the 4 CPUs (2 physical with 2
logical CPUs each), the Linux will see and use all 4.

Your comment about "in Intel XEON it is by default " doesn 't make any
sense. The chip - that is, the Xeon - will always present the logical
CPUs. The BIOS can then turn that off and that 's what you need to
double-check. Have you in fact verified your BIOS settings?

.../Ed

--
Ed Wilts, Mounds View, MN, USA
mailto:ewilts@(protected)
Member #1, Red Hat Community Ambassador Program


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