[PlanetCCRMA] Re: [PlanetCCRMANews] added: new edge kernels for fc2/3

[Shayne O'Connor]

Fernando Lopez-Lezcano wrote:

>No, not "0' certainly :-)
>You can run this:
>  /etc/rc.d/init.d/rtirq status
>that will print the priority of the interrupt request handlers, I think
>think the second down from the top should be your soundcard (check to
>see which interrupt it is using by doing "cat /proc/interrupts/"). I
>think the best option would be to use a slightly lower priority than
>that (so that first to run is the interrupt handler and then jack). 60
>should be close. 
>  
>
here's the output for rtirq:


  PID CLS RTPRIO  NI PRI %CPU STAT COMMAND
  277 FF      80  -5 120  0.0 SW<  IRQ 8
  879 FF      60  -5 100  0.1 SW<  IRQ 22
  952 FF      60  -5 100  0.0 SW<  IRQ 20
  927 FF      59  -5  99  0.0 SW<  IRQ 21
  375 FF      50  -5  90  0.0 SW<  IRQ 1
   20 FF      49  -5  89  0.0 SW<  IRQ 9
  298 FF      49  -5  89  0.0 SW<  IRQ 12
  334 FF      46  -5  86  0.0 SW<  IRQ 14
  336 FF      45  -5  85  0.0 SW<  IRQ 15
 1882 FF      40  -5  80  0.0 SW<  IRQ 7
 2054 FF      39  -5  79  0.0 SW<  IRQ 6
 3447 FF      38  -5  78  0.2 SW<  IRQ 19
 3698 FF      37  -5  77  0.1 SW<  IRQ 17

and cat /proc/interrupts:

           CPU0      
  0:    1743956    IO-APIC-edge  timer  0/43956
  1:        410    IO-APIC-edge  i8042  0/410
  7:          2    IO-APIC-edge  parport0  0/0
  8:          1    IO-APIC-edge  rtc  0/1
  9:          0   IO-APIC-level  acpi  0/0
 12:     152827    IO-APIC-edge  i8042  160/52826
 14:      18240    IO-APIC-edge  ide0  44/18240
 15:        477    IO-APIC-edge  ide1  0/477
 17:     121688   IO-APIC-level  EMU10K1  77/21688
 19:     106598   IO-APIC-level  nvidia  7/6598
 20:          0   IO-APIC-level  ohci_hcd  0/0
 21:          0   IO-APIC-level  ohci_hcd  0/0
 22:     175682   IO-APIC-level  ehci_hcd, eth0  178/75682
NMI:          0
LOC:    1738855
ERR:          0
MIS:          0


as you can see, my soundcard is *last* rtirq list ... isn't irq 17 the
worst possible irq for the soundcard to be on? geez, could mean another
trip inside the computer ...

just in general, and i know there's heaps written on this subject but
i'm not sure how current it is, should i use ACPI (or is that APIC?) or
not? i currently have acpi daemon loading at start-up too ... or is this
supposed to be something that rtirq takes care of?!

shayne