Difference among Hard and Soft real-time systems
Explain difference among Hard and Soft real-time systems?
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A hard real-time system guarantees that critical tasks finished on time. This goal needs that all delays in the system be restricted from the retrieval of the stored data to the time that this takes the operating system to complete any request made of it.
A soft real time system where a critical real-time task obtains priority over other tasks and retains that priority until it finished. As in hard real time systems kernel delays require to be bounded
Starvation: It is a resource management problem in which a process does not get the resources it requires for a long time since the resources are being assigned to other processes.
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Greedy Best-First Search: It uses a heuristic that attempts to predict how close the end of a path is to the goal state, so that paths which are judged to be closer to the state are explored first.
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Error Preservation: When verification is used to disprove properties (find bugs), a third type of property preservation comes into play: An abstraction is error preserving if a set of properties that is false in the abstract system has corresponding p
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Semaphore: It is a software or hardware flag. In case of multitasking systems, a semaphore is a variable with a value which points out the status of a common resource. It is emp
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