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

shift8 shift8 at digitrash.com
Fri Sep 8 19:46:32 CEST 2006


pci tuning is done using the lspci (for viewing pci bus ids, etc) and
setpci commands.  review the man pages of both of these, and have a look
in google for "linux pci latency"

ibm has a good article on this:
http://www-128.ibm.com/developerworks/linux/library/l-hw2.html

On Fri, 2006-09-08 at 09:41 +0200, Davide Morelli wrote:
> > 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.
> 
> 
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-- 
Mechanize something idiosyncratic.






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