An overview of interrupt accounting techniques for multiprocessor real-time systems

An overview of interrupt accounting techniques for multiprocessor real-time systems

The importance of accounting for interrupts in multiprocessor real-time schedulability analsysis is discussed and three interrupt accounting methods, namely quantum-centric, task-centric, and processor-centric accounting, are analyzed and contrasted. Additionally, two special cases, dedicated interrupt handling (i.e., all interrupts are processed by one processor) and timer multiplexing (i.e., ...

Debugging Real-Time Multiprocessor Systems

Technology trends are causing a paradigm shift in how computer systems are designed: Instead of steadily getting faster single processors, the entire semiconductor industry is turning to multiprocessor designs to improve performance. Future real-time and embedded systems will be using multiple-processor hardware, and the software is expected to adapt to the situation. Writing parallel software ...

An Adaptive Framework for Multiprocessor Real-Time Systems

In this paper, we develop an adaptive scheduling framework for changing the processor shares of tasks—a process called reweighting—on real-time multiprocessor platforms. Our particular focus is adaptive frameworks that are deployed in environments in which tasks may frequently require significant share changes. Prior work on enabling realtime adaptivity on multiprocessors has focused exclusivel...

An adaptive framework for multiprocessor real-time systems

An Efficient Dynamic Scheduling Algorithm For Multiprocessor Real-Time Systems

Many time-critical applications require predictable performance and tasks in these applications have deadlines to be met. In this paper, we propose an efficient algorithm for nonpreemptive scheduling of dynamically arriving real-time tasks (aperiodic tasks) in multiprocessor systems. A real-time task is characterized by its deadline, resource requirements, and worst case computation time on p p...