21 Nov
2015
21 Nov
'15
2:59 p.m.
On Sat, Nov 21, 2015 at 8:56 AM, Jeremy Jongepier <jeremy(a)autostatic.com>
wrote:
On 11/21/2015 02:40 PM, Ede Wolf wrote:
Actually, it depends on the BIOS in your motherboard.
In general, most laptops and many newer motherboards do not allow
interrupt/slot assignment to be controlled.
Most older desktop-y motherboards and a few contemporary ones do.
If you can't find it in the BIOS setup stuff, then it probably isn't there.
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 :(