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     Research Journal of Applied Sciences, Engineering and Technology


Enhanced Precedence Scheduling Algorithm with Dynamic Time Quantum (EPSADTQ)

1G. Siva Nageswara Rao, 2S.V.N. Srinivasu, 3N. Srinivasu and 4G. Ramakoteswara Rao
1Department of Computer Science and Engineering, K L University
2Department of Computer Science, HOD, PNC & KR PG College Narasaraopet
3Department of Computer Science and Engineering, K L University
4Department of Computer Science and Engineering, VR Siddhartha Engineering College, Vijayawada, India
Research Journal of Applied Sciences, Engineering and Technology  2015  8:938-941
http://dx.doi.org/10.19026/rjaset.10.2450  |  © The Author(s) 2015
Received: February ‎22, ‎2015  |  Accepted: March ‎7, ‎2015  |  Published: July 20, 2015

Abstract

This study proposes a new algorithm which is a logical extension of the popular Round Robin CPU scheduling algorithm. The Round Robin algorithm can be effective only if the time quantum is chosen accurately. Even by taking mean average of burst times as time quantum, the performance of the RR cannot be improved beyond a certain point. However, the novel method proposed here, suggests that a priority be assigned to each process based on balanced precedence factor. The novel method also uses mean average as a time quantum. Experiments are conducted in order to measure the effectiveness of this novel method. The results clearly showed that EPSADTQ is superior to RR and PSMTQ and its variants. EPSADTQ resulted in a significant reduction of the no. of context switches, average waiting time and average turnaround time.

Keywords:

Avg. waiting time, context switch, process, ready queue, turnaround time,


References


Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.

ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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