ACPI and interrupt storm--7.0 and 6.2
fu at spamtrench.com
Sat Nov 24 10:02:46 PST 2007
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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