I have a freshly installed 4.0_RC2/i386 system where the CPU spends more than 84% in interrupt mode when the machine is idle.
With sysstat vm, I notice ~106000 interrupts on ioapic0 pin 9. On the other hand, dmesg doesn't show anythin interrupting on that pin.
Any idea how to track this down? I've tracked down some interrupt problems on an amd64 system some months ago, but forgotten most of it in the meantime.
Please cc: me since I'm not subscribed to port-i386, only port-amd64.