6. Resource Allocation in Real-Time and Embedded Systems
Efficient resource allocation is crucial for real-time and embedded systems, which often operate under constraints of limited processing power and stringent timing requirements. Strategies like Rate Monotonic Scheduling and Earliest Deadline First are vital for optimizing CPU time allocation. Key challenges include preventing deadlocks and managing power effectively to ensure system performance and reliability.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Efficient resource allocation is essential to maintain system performance and meet deadlines.
- Different resource types require specific strategies for effective management, including CPU, memory, and I/O.
- Techniques such as mutexes and priority inheritance are crucial for avoiding conflicts and ensuring timely task execution.
Key Concepts
- -- RealTime Systems
- Systems that must respond to inputs within strict timing constraints.
- -- Rate Monotonic Scheduling (RMS)
- A fixed-priority scheduling algorithm where shorter periods yield higher priorities.
- -- Earliest Deadline First (EDF)
- A dynamic scheduling algorithm that prioritizes tasks based on their deadlines.
- -- Priority Inversion
- A situation where a lower-priority task holds a resource needed by a higher-priority task.
- -- Deadlock
- A state where two or more tasks cannot proceed because each is waiting for the other to release resources.
- -- Dynamic Voltage and Frequency Scaling (DVFS)
- An energy-saving technique that adjusts the voltage and frequency according to the load.
Additional Learning Materials
Supplementary resources to enhance your learning experience.