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Real-Time Workload Allocation on a Uni-processor

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Abeer Hamdy, Ahmed E. Youssef, Reda Ammar Published in Applied Electronics

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Communications on Applied Electronics
Year of Publication 2014
© 2014 by CAE Journal
Series Volume 1 Number 1
Authors Ahmed E. Youssef, Reda Ammar
10.5120/59-1302
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Abeer Hamdy, Ahmed E Youssef and Reda Ammar. Real-Time Workload Allocation on a Uni-processor. Communications on Applied Electronics 1(1):6-13, 2014. Published by Foundation of Computer Science, New York, USA. BibTeX

@article{key:article,
	author = {Abeer Hamdy and Ahmed E. Youssef and Reda Ammar},
	title = {Real-Time Workload Allocation on a Uni-processor},
	journal = {Communications on Applied Electronics},
	year = {2014},
	volume = {1},
	number = {1},
	pages = {6-13},
	note = {Published by Foundation of Computer Science, New York, USA}
}

Abstract

The paper presents a novel allocation algorithm to allocate independent real time tasks on a processor in a way that improves the processor’s throughput (Processor’s throughput is the number of tasks the processor can accept for execution). The proposed approach allocates tasks’ workloads (task’s workload is the percentage of work required by the processor to execute the task) instead of their processing powers (Processing power assigned to a task is a percentage of the processor reserved to execute the task such that its deadline is satisfied). To achieve our objective a variable processing power is assigned to the task under consideration over its deadline to satisfy its timing requirements instead of rejecting it if a constant processing power cannot be guaranteed as in previous CPU reservation approaches. Simulation results revealed that the acceptance rate of the admitted tasks to a certain processor using the new approach is superior to that achieved using the traditional processing power reservation approach.

Reference

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Keywords

Workload allocation, Processing power, Processor utilization, Scheduling real-time tasks