A New CPU Scheduling Algorithm Using Round-robin and Mean of the Processes

  • N. Sujith Kumar Reddy
  • H. Santhi
  • P. Gayathri
  • N. Jaisankar
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 732)


This paper aims to develop the round-robin (RR) process scheduling algorithm, to get optimized waiting and turnaround time with less number of context switching for the given process. RR algorithm is the most adopted algorithm in modern computing as it overcomes the problem of starvation in first-come first-serve (FCFS) and short job first (SJF). In this article, an improved round-robin algorithm is proposed by calculating the mean of the given processes namely Check Mean with round-robin (CMRR), which reduces the average waiting time (AWT) and average turnaround time (ATT) of the given processes. The drawback of the present round-robin algorithm is that it turns to FCFS in case of large time quantum values which results in higher waiting and turnaround time of the processes. This method gives the most optimized values for scheduling the given processes reducing waiting and turnaround time comparatively. This method is more efficient if the processes burst time is in ascending order. It also reduces the number of context switches increasing the throughput.


CPU scheduling Multiprogramming operating systems Round-robin algorithm FCFS SJF Gantt chart Turnaround time Waiting time Context switches 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • N. Sujith Kumar Reddy
    • 1
  • H. Santhi
    • 1
  • P. Gayathri
    • 1
  • N. Jaisankar
    • 1
  1. 1.School of Computing Science and Engineering (SCSE)VIT UniversityVelloreIndia

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