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Rtirq - Independent ALSA and linux audio support site
https://alsa.opensrc.org/Rtirq
The script has identified an external USB card and has hence raised the priority of the threads managing the USB bus (uhci_hcd and ehci_hcd). See also. Rui Nuno Capela's website, with interesting info and applications for linux audio; rtirq download page (near bottom) former schedutils download page (now included in the standard util-linux package)
rtirq - correct defintion of RTIRQ_NAME_LIST in /etc ...
https://www.rncbc.org/drupal/node/850
The standard entry for RTIRQ_NAME_LIST installed with Ubuntu 14.04LTS is: RTIRQ_NAME_LIST="rtc snd usb i8042". KXStudio recommends: RTIRQ_NAME_LIST=“firewire snd usb i8042”. As I am currently testing a firewire audio device whereby the ffado stream is being tripped up by unwanted xruns, would adding "firwire" to the begining of the list ...
rtirq | rncbc.org
https://www.rncbc.org/drupal/node/107
rtirq is a simple init script, which main purpose is about to setup IRQ service thread priorities in such a reasonable ordering for general audio workstation. That might be just what you're after, indeed. The way it should be installed depends on your distro, although it tries to comply with LSB.
System configuration [Linux-Sound] - Linux Audio
https://wiki.linuxaudio.org/wiki/system_configuration
RTIRQ_NAME_LIST="rtc firewire usb" If RTIRQ_PRIO_HIGH is set to 90 and RTIRQ_PRIO_DECR to 5 then the real-time clock (rtc) will get prio 90 and the FireWire controller prio 85. All other bottom-halves of IRQ 16 will get a default prio of 50 so the FireWire controller will always take precedence.
REALTIME PRIORITY - AudioLinux
http://www.audio-linux.com/html/realtime.html
In this case the DAC (SA9023 USB Audio) is at irq 25, more specifically irq/25-xhci_hcd. Because of this we will change the rtirq.conf line from RTIRQ_NAME_LIST="usb" to RTIRQ_NAME_LIST=" xhci " This way the max. priority specified in the configuration file will be given only to the DAC. NETWORK BRIDGE
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