Hope this is the right place to post this...please correct me if this is not the case.

I'm building 7.0 BETA3 (though same problem appears in 6.2-STABLE) on 2- and 4-CPU Xeon boxes. Generic SMP and custom kernel configs build fine and all CPUs launch on reboot.

However, I get a lot of interrupts from ACPI. Load only settles down to around 0.4 at complete idle with almost no services running. If I turn off ACPI, obviously the interrupt 'storm' ceases, but then I lose the multiple CPUs.

I don't have access to the machine(s) at the moment, but my recollection is around 75000 ACPI interrupts per second (per vmstat -i).

Any suggestions? pointers? would be much appreciated.

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