R: [PD] Real-time Linux; hard req. and suggestions?

[Davide Morelli]

> I'm currently using Fedora Core 4 with the 2.4.19 kernel on a 
> 1.6 GHz Sempron processor (could be upgraded to an Athlon64). 
>  I'm not sure which system specs are most important for 
> getting good throughput, front side bus, memory access 
> speed...how to balance them?
> 

try CCRMA packages on top of your FC4 system, they come with 2 realtime
kernels: 50% preepmption (rdt kernels) and 100% preemption (rtt ones). see
http://ccrma.stanford.edu/planetccrma/software/node3.html

I think the interrupt priority of your soundcard should be high and it
should not be shared with other devices, jackd should be executed with
realtime priority ( -R flag). 
I'd really like to know how to set the irq priority.. but i don't.. i guess
it has something to do with APIC/ACPI...
If anyone knows how to set:
* the process priority
* the irq priority
could please tell how? i can't find anything on the web..

ciao,
davide.