linuxaudio.org

Atte André Jensen wrote:

quoted text
> Jeremy wrote:

>

>> jeremy@soushi:~$ cat /proc/interrupts | grep ohci1394

>>  16:    1123463    1075232   IO-APIC-fasteoi   uhci_hcd:usb3, ohci1394,

>> eth1, mmc0, jmb38x_ms:slot0, nvidia

>>

>> IRQ 16 in my case. In your case also according to your opening mail. You

>> can see that it's crowded on 16 in my case, I can't get my Firewire to

>> work without the help of rtirq.

>

> That's great, thanks. Can't believe I overlooked that!

>

> I'm also on irq 16, it seems, and only sharing with one usb port:

> atte@vestbjerg:~$ cat /proc/interrupts | grep ohci1394

>   16:     110664     111091   IO-APIC-fasteoi   uhci_hcd:usb3, ohci1394

>

> Two questions:

>

> 1) Why doesn't `pidof IRQ-16` return anything here, I guess I need that

> to call chrt, right:

>

> atte@vestbjerg:~$ pidof IRQ-16

> atte@vestbjerg:~$ pidof IRQ 16

> atte@vestbjerg:~$ pidof "IRQ 16"

> atte@vestbjerg:~$ pidof "IRQ-16"

> atte@vestbjerg:~$

> 

Try ps -eLo pid,cmd | grep "irq/16"

But it might be a good idea to use the rtirq script:

http://subversion.ffado.org/wiki/IrqPriorities

http://alsa.opensrc.org/Rtirq
> 2) I'm hoping the usb shared with my firewire is one of the three usb

quoted text
> ports, how can I investigate further in this direction? Ultimately I'd

> like to be able to leave whatever-usb-is-sharing-irq-with-the-firewire

> unused...

> 

Yes it's port 3. You can investigate further with the lsusb command.
Best,
Jeremy

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