FWIW another version of RTIRQ_NAME_LIST: spinymouse@precise:~$ sudo /etc/init.d/rtirq stop spinymouse@precise:~$ sudo /etc/init.d/rtirq start Setting IRQ priorities: start [rtc] irq=8 pid=92 prio=90: OK. Setting IRQ priorities: start [snd_hdsp] irq=18 pid=628 prio=85: OK. Setting IRQ priorities: start [snd_ice1] irq=20 pid=663 prio=80: OK. Setting IRQ priorities: start [snd_ice1] irq=21 pid=671 prio=79: OK. Setting IRQ priorities: start [ohci_hcd] irq=16 pid=81 prio=70: OK. Setting IRQ priorities: start [ohci_hcd] irq=17 pid=83 prio=69: OK. Setting IRQ priorities: start [ohci_hcd] irq=17 pid=87 prio=68: OK. Setting IRQ priorities: start [ehci_hcd] irq=19 pid=79 prio=70: OK. Setting IRQ priorities: start [i8042] irq=1 pid=91 prio=65: OK. spinymouse@precise:~$ grep RTIRQ_NAME_LIST /etc/default/rtirq RTIRQ_NAME_LIST="rtc snd_hdsp snd_ice1 snd usb i8042" spinymouse@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 628 FF 85 - 125 0.0 S irq/18-snd_hdsp 1230 FF 82 - 122 0.9 S irq/18-nvidia 663 FF 80 - 120 0.0 S irq/20-snd_ice1 671 FF 79 - 119 0.0 S irq/21-snd_ice1 85 FF 78 - 118 0.0 S irq/18-ohci_hcd 89 FF 77 - 117 0.0 S irq/18-ohci_hcd 79 FF 70 - 110 0.0 S irq/19-ehci_hcd 81 FF 70 - 110 0.4 S irq/16-ohci_hcd 83 FF 69 - 109 0.0 S irq/17-ohci_hcd 87 FF 68 - 108 0.0 S irq/17-ohci_hcd 91 FF 65 - 105 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 285 FF 50 - 90 0.0 S irq/14-pata_ati 286 FF 50 - 90 0.0 S irq/15-pata_ati 293 FF 50 - 90 0.0 S irq/22-firewire 537 FF 50 - 90 0.0 S irq/7-parport0 979 FF 50 - 90 0.0 S irq/43-eth0 3 TS - 0 19 0.3 S ksoftirqd/0 9 TS - 0 19 0.2 S ksoftirqd/1 spinymouse@precise:~$