21 Nov
2015
21 Nov
'15
3:31 p.m.
Hi Ede,
20: <CPU List> IR-IO-APIC 20-fasteoi ohci_hcd:usb9, snd_rme9652,
vfio-intx(0000:07:00.0)
Have you tried plugging the device into a different USB port? Sometimes
this makes a difference for the USB interrupt.
So some USB, my passed-through parallel card and my soundcard are all
sharing interrupt #20.
Do you *use* the parrrallel port? If not, you can remove the kernel module
with rmmod, and then the interrupt won't fire..
And finally you could set the CPU affinity for each interrupt, so at least
they're going to be handled by a different CPU
than the one that's going to
handle the audio interrupt.
Some details about latency tuning, CPU affinities and tuning here:
http://openavproductions.com/real-time-latency-tuning/
Cheers, -Harry
--
http://www.openavproductions.com