Tag: preempt-rt kernel

• #Raspberry Pi 4B: Real-Time System using Preempt-RT (kernel 4.19.y)

  Raspberry Pi, Real Time Systems | 7 min | 102106

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  preempt-rt kernel

  performance

  real time system

  raspberry pi 4b

  raspbian buster

  The Preempt-RT patching article is one of the most visited articles in my blog. However, that article needed a small update: Raspberry Pi 4B is out there and with Raspbian Buster, a new version of kernel is available: 4.19.y.

  I also uploaded the compiled and patched kernel to lemariva/RT-Tools-RPi. You can follow all these steps and compile the kernel by yourself or you can download the files from the repository and deploy the kernel on your Raspberry Pi 4B.

  This tutorial is the second of a...

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• #Raspberry Pi: Preempt-RT vs. Standard Kernel 4.14.y

  Real Time Systems | 5 min | 19630

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  raspberry pi

  kernel patching

  standard kernel

  preempt-rt kernel

  latency

  performance

  The last week I was working on a real-time application (with a 1 ms sample time) that runs on an ARMv8 Cortex-A53 (Raspberry Pi 3 Model B based board) and I was wondering the differences between latencies on the standard and the Real-Time (RT) Linux kernel. I had some problems with the standard kernel version, then I thought I could analyze the latencies of both kernels, and make some conclusions. Many test are available but with older kernel versions. The tests were perfo...

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