Tag: real time system

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

  Raspberry Pi, Real Time Systems | 7 min | 102887

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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: Real Time System - Xenomai Patching Tutorial for Kernel 4.14.y

  Real Time Systems | 6 min | 23160

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  raspberry pi

  kernel patching

  real time system

  xenomai

  The website of Xenomai says the following about it Xenomai:

  Xenomai brings POSIX and traditional RTOS APIs for porting time-critical applications to Linux-based platforms. When the native Linux kernel cannot meet the response time requirements of the application, Xenomai supplements it with Cobalt, a small real-time infrastructure which schedules time-critical activities independently from the main kernel logic.

  Checking the list of supported hardware, the Raspberry Pi 2, 3 B(+) ARM micro (BCM2835) is included.

  This tutorial is almost the same as the tutorial for Preempt-RT patching, but in ...

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• #Raspberry Pi: Real Time System - Preempt-RT Patching Tutorial for Kernel 4.14.y

  Real Time Systems | 8 min | 63793

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  raspberry pi

  kernel patching

  preempt-rt

  real time system

  The Preempt-RT tutorial article is the most visited post on my blog. Therefore, I decided to update the tutorial to make it cleaner, and to introduce some other possible modifications and tips for solving problems.

  Preempt-RT is a popular patch for the Linux kernel to transform Linux into such a real-time operating system. There is another option to get this done, and that's Xenomai (tutorial and performance tests here).

  Tiejun Chen, the main responsible for the official Raspberry-Pi-RT branch, has published a video about Preempt-RT here. It includes tips, results and tests.

  Getting the Sour...

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