On Mon, Sep 29, 2003 at 12:09:18PM +0100, Andrew Ingram wrote: > Can anyone tell me if there is anything special I should enable in my > kernel (or any other Debian configuration) to make the most out of an > Intel P4 processor with HyperThreading? Just realised my kernel has SMP > disabled which might have been a mistake, but I can't find a definitive > answer by googling. You need to enable SMP, and also ACPI CPU Enumeration... either CONFIG_ACPI_HT_ONLY or CONFIG_ACPI_PROCESSOR. In the former case, you may also need to use the boot parameter "acpismp=force". If memory serves, it's no longer required as of 2.4.22.
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