Soft Realtime Debian

[Robert Leacroft]

Hi,

Does anyone know if it is possible to compile the latest Debian kernel with "realtime" patches etc. for the A10S or the A10 (for when they get stock of Lime).  I want to reduce the audio latency (already using Jack with RT switch) to as low as possible and it looks as if a soft realtime build is needed.  I have never compiled a kernel before and it would be nice to know if this is even possible for a beginner before I start. Any comments on the possibilities would be much appreciated.

Robert

[soenke]

If you compile the standard sunxi-kernel with preempt-options and high-precision timers, then thats enough to get "soft-realtime". If you require nanosecond-precision, you have to apply the RT-Patches which will probably go into the mainline kernel in the future.

I wouldnt recommend trying the RT-variant for someone who didnt do any kernel-compiling before. Start with the preemt-variant and try if this is enough for your application.

Do the debian-build-from-scratch howto but before starting to compile the kernel add the preemt-option and the high-precision timers via "make arch=arm menuconfig".

[Robert Leacroft]

Thanks Soenke.  I will give that a go. It sounds a bit easier than applying the "patches" and I am sure will be more than adequate.

Robert