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I want to apply an rt patch to the latest stable vanilla kernel, which is 3.17.4 currently. The latest rt-patch found are for 3.14.24. Does that mean I have to use the the 3.14.x family, and can not use 3.17.4 ? Reason being; from above 3.15.x, my sound-card are working properly. Thank you.

This is btw the link for the rt patches: https://www.kernel.org/pub/linux/kernel/projects/rt/

  • what sound card do you have? Is it possible to compile the latest alsa to get support for your sound card instead of upgrading the kernel? also are you SURE you need a real time kernel and a preemptive kernel is not good enough? for the vast majority of audio related use cases a preemptive kernel will suffice. Also are you flexible on distro usage? I am sure ubuntudtudio kernels are compiled preemptive by default. – nass Dec 1 '14 at 14:06
  • Hi nass, I have a Saffire USB 6. Don't know about the latest alsa, but I think they came with some important updates after the 3.15.x version included in the vanilla source. Reason being for the rt kernel, are mostly test purposes...when i will use the system for live perfomances (e.g with a midi keyboard), the latency is what I think about. At the time I am testing out the KXStudio, which is ubuntu software. – Nicco Dec 1 '14 at 14:31
  • See the FAQ Section - What is the "3.x stable RT tree"? for the reason the RT Kernel lags behind the mainline. – eyoung100 Dec 1 '14 at 15:09
  • @Nicco with an ordinary preemptive kernel, I get jack to run without any xruns at 5msec. even 2msec with only clicks when i load a new effect or synth. I really don't think you need to even attempt the rt-kernel. Even if i'm wrong, you can still try out the preemptive one until a patch for >3.15.x kernel comes out. shouldn't be too long. – nass Dec 2 '14 at 9:56
  • Ok @nass, maybe that's a good idea. Thank you for sharing. And thank your the link eyoung100. – Nicco Dec 2 '14 at 11:15
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If you really need an rt-kernel you will have to wait for a patch to become available for the version of kernel you seek.

I would advise however to avoid the hassle of preparing an rt-kernel for your professional audio needs. You can easily get extremely low (<10msec) latencies even with the preemptive kernel. This should be more than enough.

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