Re: [LAU] hdsp not happy with recent kernels

> did some observing...
> when i put snd_hdsp in the RTIRQ_NAME_LIST in the rtirq config, neither
priorities nor IRQs change. however...
> for ALL kernels under which jack fails:
> /etc/init.d/rtirq status
> shows irq/19-snd_hdsp AND irq/19-firewire
> and for the one kernel under which jack works:
> /etc/init.d/rtirq status
> shows irq/19-snd_hdsp and a DIFFERENT irq for firewire
> this seems significant.
> and... how can i ensure firewire gets a different irq?
> for now, i'll try killing the firewire module, since i don't use
anything
> firewire at the moment.
> cheers!
> .pltk.

experiment results:

on a 3.5-3 kernel, after killing firewire modules, rtirq status is:

  PID CLS RTPRIO NI PRI %CPU STAT COMMAND
   45 FF 90 - 130 0.0 S irq/8-rtc0
  757 FF 85 - 125 0.0 S irq/19-snd_hdsp
  767 FF 80 - 120 0.0 S irq/44-snd_hda_
  235 FF 75 - 115 0.0 S irq/16-ehci_hcd
  236 FF 74 - 114 0.0 S irq/23-ehci_hcd
   44 FF 70 - 110 0.0 S irq/1-i8042
   43 FF 69 - 109 0.1 S irq/12-i8042
   32 FF 50 - 90 0.0 S irq/9-acpi
  233 FF 50 - 90 0.0 S irq/16-mmc0
  239 FF 50 - 90 0.8 S irq/41-ahci
  641 FF 50 - 90 0.0 S irq/42-mei
  708 FF 50 - 90 0.0 S irq/17-rtlwifi
  716 FF 50 - 90 0.0 S irq/43-i915
 2371 FF 50 - 90 0.0 S irq/40-eth0
    3 TS - 0 19 0.2 S ksoftirqd/0
   15 TS - 0 19 0.1 S ksoftirqd/1
   19 TS - 0 19 0.1 S ksoftirqd/2
   23 TS - 0 19 0.1 S ksoftirqd/3

...and after my script which kills other unneeded things:

  PID CLS RTPRIO NI PRI %CPU STAT COMMAND
   45 FF 90 - 130 0.0 S irq/8-rtc0
  757 FF 85 - 125 0.0 S irq/19-snd_hdsp
  235 FF 75 - 115 0.0 S irq/16-ehci_hcd
  236 FF 74 - 114 0.0 S irq/23-ehci_hcd
   44 FF 70 - 110 0.0 S irq/1-i8042
   43 FF 69 - 109 0.1 S irq/12-i8042
   32 FF 50 - 90 0.0 S irq/9-acpi
  233 FF 50 - 90 0.0 S irq/16-mmc0
  239 FF 50 - 90 0.5 S irq/41-ahci
  641 FF 50 - 90 0.0 S irq/42-mei
  716 FF 50 - 90 0.0 S irq/43-i915
 2371 FF 50 - 90 0.0 S irq/40-eth0
    3 TS - 0 19 0.1 S ksoftirqd/0
   15 TS - 0 19 0.1 S ksoftirqd/1
   19 TS - 0 19 0.1 S ksoftirqd/2
   23 TS - 0 19 0.0 R ksoftirqd/3

...then, jack still fails. same story for the 3.2.0 kernel.

so, avoiding the irq conflict by unloading firewire modules doesn't solve
the problem. mrph.

??????????

cheers!
.pltk.

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Received on Sun Sep 16 00:15:02 2012