(I don't seem to find the start of the thread in
my mailbox)
ohci_hcd is there is you specify usb in the list of priorities rtirq
needs to raise. And nvidia is there probably because it shares an
interrupt with a real soundcard. Rtirq does not raise the priority of
only the soundcard, but everything that uses the interrupt that the
soundcard uses.
AFAIK it is not possible (or simple) to raise _just_ the soundcard as
it
is impossible to know which irq process corresponds to a soundcard
(and
which one does not). That is because the labeling of the irq process
names in the ps listing is arbitrary. At least that is what I
remember
seeing last I looked at this issue. You can of course manually lower
the
priorities of non-soundcard irq processes with chrt.
-- Fernando
The IRQ issue also is there for e.g. my AVLinux install, but there it
anyway is possible to get the wanted prio order:
http://lists.linuxaudio.org/pipermail/linux-audio-user/2012-April/084689.ht…