1 Dec
2006
1 Dec
'06
4:05 p.m.
On Fri, 2006-12-01 at 11:39 -0800, st wrote:
I found this. It looks like it might be
of interest to you.
http://cae.best.vwh.net/irqtune/
Useless with -rt kernel which already lets you prioritize interrupts by
setting the RT priority of the handler.
IRQ sharing is hard wired in a laptop - it's not going to be possible
for you to get the soundcard on its own IRQ. It will help if you don't
load drivers for other devices sharing that IRQ though.
Anyway having your soundcard on a non-shared IRQ is overrated - as long
as you aren't sharing it with a "heavy" device like a disk controller or
ethernet adapter. If you find it impossible to eliminate xruns on a
laptop there's a good chance that SMI is the problem and you must use a
higher latency.
Lee
Atte André Jensen wrote:
Hi
Reading the thread(s) on realtime-kernels, I decided to have another go
at putting my sound card (IBM T41 laptop) on it's own IRQ. Through luck,
some black BIOS-magic and help from linux thinkpad mailing list I
managed to move the sound card, PC-card, modem and SMBus
controller(whatever that is) to their own IRQ. I'm still trying to get
*only* the sound card's IRQ moved.
My question is: Since I don't use the pc-card or the modem, and provided
that SMBus is something I don't use, will having these extra stuff on
the same IRQ as the sound card be a problem? Will it make any difference
if I don't load the kernel modules for the pc card/modem thereby
disabling them?