  | |  | how to configure hyperthreading | how to configure hyperthreading 2004-02-18 - By Jason Dixon
Back On Wed, 2004-02-18 at 13:15, Ed Wilts wrote:
> 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.
Not entirely correct. The noht kernel option will disable
hyperthreading. We 've had to use this on 8-way DL740 's that report 16
CPU 's, when we only have enough spare APIC 's for about 12(?).
--
Jason Dixon, RHCE
DixonGroup Consulting
http://www.dixongroup.net
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