Einführung

Task Scenarios

Scheduling algorithms are applied to task sets. Depending on the algorithm tasks are periodic and/or aperiodic. The behavior of tasks depends on its type and can be specified by some type specific parameters like the arrival time, the execution time, the deadline and so on. More details about the task parameter you will find in the next chapter Tasks.

For the representation of schedules scheduling diagrams are often used. A scheduling diagram shows the execution of tasks along a timeline. For example it displays for each task when it arrives, when it is executed or interupted. In Figure 1 you can see a scheduling diagram for three aperiodic tasks.

example Schedule
Figure 1

A task scenario in this training module consists of a set of different tasks and a corresponding scheduling algorithm. Figure 2 shows a set of three aperiodc tasks.

Example Tasks
Figure 2

After the start of the training module a main window will be shown which consist of the menubar, the scenario editor with the toolbar, an empty scheduling diagram and this online help frame. The currently loaded task scenario is shown within the scenario editor. By using the buttons of the toolbar or the menu items of the menubar you can create, edit and visualize task scenarios.

 
Introduction > Task Scenarios

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