On 11/21/2015 02:40 PM, Ede Wolf wrote: > 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? No, unless the system supports MSI (Message Signaled Interrupts) and the sound card could use that. It's been a while since I had to use that so I have no links at hand :( You could also use rtirq for this and make sure the IRQ thread for snd_rme9652 gets the highest prio: http://wiki.linuxaudio.org/wiki/system_configuration#rtirq Another option would be to stick the RME in a different PCI(e) slot if possible. Jeremy
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