Following the discussion about irq_balance, I was having a look at my
interrupts, I figured that my most important devices all share a single one:
cat /proc/interrupts:
20: <CPU List> IR-IO-APIC 20-fasteoi ohci_hcd:usb9, snd_rme9652,
vfio-intx(0000:07:00.0)
So some USB, my passed-through parallel card and my soundcard are all
sharing interrupt #20.
Now I wonder, is there a way to force the system to use a dedicated
interrupt just for the soundcard? So that the other ones shall use a
different one (and keep sharing, if the are happy there)?
Links are welcome, too, of course. So far I just found info on setting
interrupt CPU affinity, but not about configuring an exclusive interrupt
for a given PCI device.
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