alexa AN IMPROVED ROUND ROBIN CPU SCHEDULING ALGORITHM
ISSN: 1948-1432

Journal of Global Research in Computer Sciences
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Research Article

AN IMPROVED ROUND ROBIN CPU SCHEDULING ALGORITHM

Manish Kumar Mishra*1, Abdul Kadir Khan2
  1. Department of Information Technology, Haramaya University, Dire Dawa, Ethiopia
  2. Department of Computer Science, Haramaya University, Dire Dawa, Ethiopia
Corresponding Author: Manish Kumar Mishra, E-mail: [email protected]
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Abstract

One of the most important components of the computer resource is the CPU. CPU scheduling involves a careful examination of pending processes to determine the most efficient way to service the requests. CPU scheduling is the basis of multiprogrammed operating systems. Most CPU scheduling algorithms concentrate on maximizing CPU utilization and throughput and minimizing turnaround time, waiting time, response time and number of context switching for a set of requests. Some of the popular CPU scheduling algorithms are First-Come-First-Served (FCFS), Shortest Job First (SJF), Priority Scheduling and Round Robin (RR). FCFS is the simplest form of CPU scheduling algorithm. This algorithm is simple to implement, but it generally does not provide the fastest service. Round Robin being the most popular choice in time shared system, but it may not be suitable for real time systems because of larger waiting time, turnaround time and more number of context switches. This paper describes an improvement in RR. A simulator program has been designed and tested the Improved Round Robin (IRR). After improvement in RR it has been found that the waiting time and turnaround time have been reduced drastically.

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