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A Priority Constrained Pre-emptive Scheduling of Online Real Time Services with Fixed Checkpoint Intervals for Cloud Computing

International Journal of Distributed and Cloud Computing

Volume 1 Issue 1

Published: 2013
Author(s) Name: Santhosh R., Ravichandran T. | Author(s) Affiliation: 1st Author is Research Scholar at Karpagam univ., 2nd Author is Principal at HIT, Coimbatore
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In cloud computing, various services are accessed by the different types of clients as pay per use over the internet. This paper presents a new scheduling technique for real time tasks in order to minimize the execution time and focuses on the priority constrained tasks. In older approaches, a non-preemptive scheduling with task migration algorithm is used to schedule the task with highest expected gain and executes the tasks in the queue in a non-preemptive manner. Therefore it increases the execution time of the task and response time of the priority constrained tasks. In order to overcome this problem, a priority constrained pre-emptive scheduling of online real time services with fixed checkpoint intervals is proposed to minimize the execution time of the tasks and improves the overall system performance by giving importance for higher priority tasks. Our simulation results outperform the traditional scheduling algorithms based on the similar model.

Keywords: Execution Time, Priority, Deadline, Preemptive, Checkpoint Intervals.

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