Re: [LAU] Ubuntu: changing realtime priority of irqs

Hi I trying out ubuntu with ubuntustudio kernel. In debian I always set the priority of the IRQ's using chrt -f -p 85 `pidof "IRQ 8"` However that doesn't work in ubuntu. The reason is that there seems to be no process named "IRQ 8": atte@ajstrup:~$ ps aux | grep -i IRQ root 3 0.0 0.0 0 0 ? SN 13:43 0:00 [ksoftirqd/0] atte 6274 0.0 0.0 2884 772 pts/0 R+ 13:51 0:00 grep -i irq Whereas on debian I would get: atte@ajstrup:~$ ps aux | grep IRQ root 18 0.2 0.0 0 0 ? S< 13:34 0:00 [IRQ 9] root 261 0.0 0.0 0 0 ? S< 13:34 0:00 [IRQ 4] root 286 0.0 0.0 0 0 ? S< 13:34 0:00 [IRQ 12] root 300 0.0 0.0 0 0 ? S< 13:34 0:00 [IRQ 1] root 608 0.0 0.0 0 0 ? S< 13:34 0:00 [IRQ 11] root 761 0.0 0.0 0 0 ? S< 13:34 0:00 [IRQ 14] root 787 0.0 0.0 0 0 ? S< 13:34 0:00 [IRQ 15] root 1592 0.0 0.0 0 0 ? S< 13:34 0:00 [IRQ 8] root 1593 0.0 0.0 0 0 ? S< 13:34 0:00 [IRQ 7] root 1683 0.0 0.0 0 0 ? S< 13:34 0:00 [IRQ 10] atte 4672 0.0 0.0 2848 704 pts/1 R+ 13:41 0:00 grep IRQ I suspect it has something to do with "ksoftirqd" which according to the man page seems to be a daemon handling irqs. http://tapas.affenbande.org/wordpress/?page_id=40 also doesn't seem to take ksoftirqd into account. So my question is: How do I set the priorities in ubuntu? Is it possible/clever/stupid to get rid og ksoftirqd and get things working the way I'm used to under debian, and if so how?