On Sat, 19 Nov 2005 19:18:13 -0500 Lee Revell <rlrevell@xxxxxxxxxxx> wrote: > On Sat, 2005-11-19 at 15:19 -0800, thewade wrote: > > Hello pd and lau lists, > > > > I am having trouble figuring out how to actually change the irq's of specific devices. > > You are wasting your time. Those IRQ settings are hard wired. Even if > this was possible there's no point - there's no meaningful relationship > between which IRQ your device is on and the performance. I beg to differ. Especially with RT setups, it can make very much sense when the audio device does have an irq for itself. On a -rt system this opens the possibility of raising the soundcard's irq handler priority to a value higher than the prios of all other irq handlers (i.e. 90). Also rising i.e. jackd's prio higher (70) than the other irq handlers (around 50) will give rocksolid performance. Compiling a kernel while jack is running? No problem. Heavy network load? No problem. This would not work quite as nice with several devices sharing the soundcard irq. I wonder how non -rt systems (or not properly setup -rt systems) hold up to loads like this.. Have fun, Flo -- Palimm Palimm! http://tapas.affenbande.org
