On Saturday 21 July 2007 10:03:24 David Causse wrote: > Atte André Jensen a écrit : > > 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 > > Hi, > > Your ubuntu kernel doesn't support this feature, to be sure try to look > at /proc/config.gz > zcat /proc/config.gz | grep PREEMPT > > You must have something like this : > CONFIG_PREEMPT_HARDIRQS=y > > It appears that the default kernel used by Ubuntu studio > (linux-image-lowlatency) is not patched against the Ingo's RT patch > (required to do what you want) > http://www.mail-archive.com/debian-multimedia@xxxxxxxxxxxxxxxx/msg01756.htm >l The RT kernel package seems to be linux-image-2.6.21-1-multimedia-486 > <http://apt.64studio.com/64studio/testing/pool/main/l/linux-2.6/linux-image >-2.6.21-1-multimedia-486_2.6.21-2_i386.deb> > > David C. > > > > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user it's probably, actually, because there's a dash in the proc name. IRQ-8, etc... james _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user
