3. Different approaches and solutions
3.1 Linux, the real-time kernel
3.1.1 How to make Linux real-time
The first approach to improving Linux's real-time characteristics is to search the kernel for portions of code that take too long to execute, and insert explicit scheduling points. When the kernel encounters an explicit scheduling point, it can decide whether to finish executing the current process or hand over to a higher-priority task. This minimizes interrupt processing time or the scheduling of real-time tasks. Indeed, the length of the longest non-preemptive...
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Different approaches and solutions
Application study: Alograf
Bibliography
In Engineering Techniques
Standards
- Documentation and graphic symbols – Functional diagrams for control systems – GRAFCET" function diagram – Extension of basic concepts. - UTE C03-191 - 06-93
- Langage de spécification GRAFCET pour diagrammes fonctionnels en séquence. - CEI 60848 - 02-02
- Automates programmables. - CEI 61131 - 2003
Websites
Linux temps réel par Nicolas Ferre http://nferre.free.fr
Linux France http://www.linux-france.org
Association francophone des utilisateurs de Linux (AFUL) http://www.aful.org
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