Messages in this thread | | | Date | Sat, 21 Sep 2002 22:54:04 +0100 (BST) | From | Guido Arenstedt <> | Subject | Re: Hyperthreading in -ac series |
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On Fri, 20 Sep 2002, James Cleverdon wrote:
>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....)
no hyperthreading is on in the bios my problem is that hyperthreading does not work with an -ac kernel (i have check 2.4.19-ac4 and 2.4.20-pre5-ac4) whereas a stock kernel is working fine.
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