[LAU] Issue with the priority of the sound cards using rtirq

[Pablo Fernandez]

On Tue, May 1, 2012 at 9:11 AM, Jeremy Jongepier <jeremy at autostatic.com> wrote:
> On 05/01/12 08:07, Ralf Mardorf wrote:
>>
>> Doesn't work either:(.
>>
>> spinymouse at precise:~$ sudo gedit /etc/default/rtirq
>> spinymouse at precise:~$ sudo /etc/init.d/rtirq stop
>> spinymouse at precise:~$ sudo /etc/init.d/rtirq start
>> Setting IRQ priorities: start [rtc] irq=8 pid=92 prio=90: OK.
>> Setting IRQ priorities: start [hdsp] irq=18 pid=85 prio=85: OK.
>> Setting IRQ priorities: start [hdsp] irq=18 pid=89 prio=84: OK.
>> Setting IRQ priorities: start [hdsp] irq=18 pid=649 prio=83: OK.
>> Setting IRQ priorities: start [hdsp] irq=18 pid=1163 prio=82: OK.
>> Setting IRQ priorities: start [ice1] irq=20 pid=656 prio=80: OK.
>> Setting IRQ priorities: start [ice1] irq=21 pid=688 prio=79: OK.
>> Setting IRQ priorities: start [ohci_hcd] irq=16 pid=81 prio=75: OK.
>> Setting IRQ priorities: start [ohci_hcd] irq=17 pid=83 prio=74: OK.
>> Setting IRQ priorities: start [ohci_hcd] irq=17 pid=87 prio=73: OK.
>> Setting IRQ priorities: start [ehci_hcd] irq=19 pid=79 prio=75: OK.
>> Setting IRQ priorities: start [i8042] irq=1 pid=91 prio=70: OK.
>> spinymouse at precise:~$ sudo /etc/init.d/rtirq status
>>
>>   PID CLS RTPRIO  NI PRI %CPU STAT COMMAND
>>    92 FF      90   - 130  0.0 S    irq/8-rtc0
>>    85 FF      85   - 125  0.0 S    irq/18-ohci_hcd
>>    89 FF      84   - 124  0.0 S    irq/18-ohci_hcd
>>   649 FF      83   - 123  0.0 S    irq/18-snd_hdsp
>>  1163 FF      82   - 122  0.8 S    irq/18-nvidia
>>   656 FF      80   - 120  0.0 S    irq/20-snd_ice1
>>   688 FF      79   - 119  0.0 S    irq/21-snd_ice1
>>    79 FF      75   - 115  0.0 S    irq/19-ehci_hcd
>>    81 FF      75   - 115  0.1 S    irq/16-ohci_hcd
>>    83 FF      74   - 114  0.0 S    irq/17-ohci_hcd
>>    87 FF      73   - 113  0.0 S    irq/17-ohci_hcd
>>    91 FF      70   - 110  0.0 S    irq/1-i8042
>>    20 FF      50   -  90  0.0 S    irq/9-acpi
>>    68 FF      50   -  90  0.0 S    irq/22-ahci
>>   256 FF      50   -  90  0.0 S    irq/14-pata_ati
>>   257 FF      50   -  90  0.0 S    irq/15-pata_ati
>>   290 FF      50   -  90  0.0 S    irq/22-firewire
>>   570 FF      50   -  90  0.0 S    irq/7-parport0
>>  1008 FF      50   -  90  0.0 S    irq/43-eth0
>>     3 TS       -   0  19  0.2 S    ksoftirqd/0
>>     9 TS       -   0  19  0.2 S    ksoftirqd/1
>>
>> spinymouse at precise:~$ grep RTIRQ_NAME_LIST /etc/default/rtirq
>> #RTIRQ_NAME_LIST="rtc snd usb i8042"
>> #RTIRQ_NAME_LIST="rtc hdspm ice1712 snd usb i8042"
>> RTIRQ_NAME_LIST="rtc hdsp ice1 usb i8042"
>
>
> Looks good to me, except for the two ohci_hcd and the nvidia threads. I
> don't see those when you start rtirq but they are there when you query
> rtirq's status. Weird. Same issue after a reboot? And this hdspm device, is
> that an extension card (PCI, PCIe)? If so you might want to try another slot
> because having it to share the same IRQ as your GPU isn't ideal. And maybe
> you could post or pastebin your complete /etc/default/rtirq file.
>
> Best,
>
> Jeremy

 In my experience, restarting the script tries to raise the priorities
of the threads in RTIRQ_NAME_LIST, but the ones which are already
raised aren't lowered even if you leave them out of the list.

Try rebooting the computer.

Cheers, Pablo