A semi greedy soft real-time multiprocessor scheduling algorithm

• Main Authors: Alhussian, H., Zakaria, N., Hussin, F.A., Bahbouh, H.T.
• Format: Conference or Workshop Item
• Published: Institute of Electrical and Electronics Engineers Inc. 2014
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938792258&doi=10.1109%2fICCOINS.2014.6868397&partnerID=40&md5=e5043cab152cb910af9f840d8e13f81a; http://eprints.utp.edu.my/31211/

Soft real-time systems are systems that can tolerate deadline misses but at the expense of degradation in quality of service. Many of the Scheduling algorithms used to schedule real-time tasks in a multiprocessor soft real-time systems are extended from their uniprocessor counterparts such as Global Earliest Deadline First (G-EDF) and Least Laxity First (LLF). However such algorithms when extended to real-time multiprocessor scheduling achieve low schedulability rates. In this paper, we present an efficient real-time multiprocessor scheduling algorithm that achieves high schedulability rates compared to currently existing algorithms. Unlike the current algorithms which are known to be greedy, our proposed algorithm uses a semi-greedy criteria to schedule tasks. The simulation showed that the proposed algorithm misses few deadlines as well as achieves high schedulability rates compared to currently existing algorithms. © 2014 IEEE.