[ubuntu-studio-users] Questions about production

[Shubham Mishra]

These are the jack settings

/usr/bin/jackd -p128 -dalsa -dhw:0 -r48000 -p512 -n2 -Xseq

On Sunday 27 July 2014 04:47 PM, Ralf Mardorf wrote:
> On Sun, 2014-07-27 at 16:23 +0530, Shubham Mishra wrote:
>> $ /etc/init.d/rtirq status output
>>
>> PID CLS RTPRIO  NI PRI %CPU STAT COMMAND
>>     80 FF      90   - 130  0.0 S    irq/8-rtc0
>>     75 FF      80   - 120  0.0 S    irq/16-ehci_hcd
>>     77 FF      79   - 119  0.0 S    irq/23-ehci_hcd
>>     79 FF      75   - 115  0.0 S    irq/1-i8042
>>     78 FF      74   - 114  0.0 S    irq/12-i8042
>>     47 FF      50   -  90  0.0 S    irq/9-acpi
>>    152 FF      50   -  90  0.0 S    irq/40-ahci
>>    372 FF      50   -  90  0.0 S    irq/18-ips
>>    439 FF      50   -  90  0.1 S    irq/17-wlan%d
>>   3497 FF      50   -  90  0.0 S    irq/42-mei_me
>>   3498 FF      50   -  90  0.0 S    irq/43-snd_hda_
> Please post the output of
>
> $ grep RTIRQ_NAME_LIST /etc/default/rtirq
RTIRQ_NAME_LIST="rtc snd usb i8042"


> Your sound device doesn't share it's IRQ, but it has got a bad priority.
> The rtirq default is to care about snd drivers, but Ubuntu Studio has
> got the tendency to use current lowlatency kernels, but stay with
> outdated rtirq scripts, that don't fit to the kernel.
>
> Please also post the output of
>
> $ sudo apt-cache policy rtirq-init
> $ uname -rm
rtirq-init:
   Installed: 20130909-1
   Candidate: 20130909-1
   Version table:
  *** 20130909-1 0
         500 http://in.archive.ubuntu.com/ubuntu/ trusty/universe amd64 
Packages
         100 /var/lib/dpkg/status

and

3.13.0-32-lowlatency x86_64



> Not necessarily! But one step after the other, first we need to find out
> why you experience xruns. You set up the CPU frequency scaling to
> performance?
>
Yes it's set to performance now. I get almost the same number of xruns, 
a bit less may be. However DSP load seems to have gone down from 50% to 
20%. I'll record again in the evening after a system restart with the 
frequency scaling at performance and see how many dropouts i get.

Thanks
Mish