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Transcript: Designing Predictable Real-Time Systems
Slide 3
Designing Predictable Real-Time Systems
I would like to introduce what it means to have a predictable real-time system. We can start with a look at what it means to have a resource constrained embedded platform that we can analyze to determine if tasks meet their deadlines: - this could be any multi-tasking application executing on a hardware device where some software threads must meet physical deadlines; - or this could be an application integrated with a commercial off the shelf (COTS) real-time operating system (RTOS) like VxWorks, embedded Linux, or Integrity; - but the minimum requirement is that your multiple tasks execute on one or more CPUs using a preemptive, priority-based scheduling algorithm. The schedulability analysis can take place at the design level using a simulator, the source code level directly on the target hardware, or a combination of both techniques. Designing a functional model with real-time consideration came about in September of 2002 when real-time annotations became a part of the unified modeling language (UML) – as approved by OMG.
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