Messages in this thread | | | From | James Cleverdon <> | Subject | Re: Hyperthreading in -ac series | Date | Fri, 20 Sep 2002 15:47:59 -0700 |
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On Friday 20 September 2002 03:36 pm, Guido Arenstedt wrote: > Hyperthreading does not seem to work in the -ac series > it works fine with a stock 2.4.19 kernel > > during bootup i only get the message: > WARNING: No sibling found for CPU 0. > WARNING: No sibling found for CPU 1. > > or is this done on purpose?
The latter. Hyperthreading _is_ working in the kernel, but it is not finding "sibling" CPUs to match the real ones. (Or, as we prefer to call them, DiVitos to match the Schwartzenegers. ;^)
Check your BIOS. Some turn off hyperthreading by default. (Notably, IBM's x440....)
-- James Cleverdon IBM xSeries Linux Solutions {jamesclv(Unix, preferred), cleverdj(Notes)} at us dot ibm dot com
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