A new memory scheduling policy for real time systems

2017 ◽  
Author(s):  
Ankita Samaddar ◽  
Moumita Das ◽  
Ansuman Banerjee
Keyword(s):  
Real Time ◽  
Real Time Systems ◽  
Scheduling Policy ◽  
Memory Scheduling ◽  
Time Systems

scholarly journals Contention-Free Scheduling for Mixed-Criticality Multiprocessor Real-Time System

Symmetry ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1515
Author(s):  
Hyeongboo Baek ◽  
Kilho Lee
Keyword(s):  
Real Time ◽  
Schedulability Analysis ◽  
Multiprocessor Systems ◽  
Real Time Systems ◽  
Time System ◽  
Real Time System ◽  
Scheduling Policy ◽  
And Performance ◽  
Time Systems ◽  
Mixed Criticality

Zero-laxity (ZL) and contention-free (CF) policies have received considerable attention owing to their simplicity and applicability to real-time systems equipped with symmetry multiprocessors. Recently, the ZL policy for mixed-criticality (MC) systems has been proposed and studied, but the applicability to and performance of the CF policy for MC systems have not been investigated yet. In this paper, we propose the CF policy (as a scheduling policy) for MC symmetry multiprocessor systems, referred to as the MC systems tailored CF policy (MC-CF), and a schedulability analysis in support thereof. We define the notion of contention-free slots for two different criticalities (of MC systems) of tasks, propose a technique to limit the amount to be utilized for each task by defining an upper bound, and subsequently explain the way in which the contention-free slots are systematically utilized to improve the schedulability of MC symmetry multiprocessor systems. Following this, we develop a deadline analysis (DA) for MC-CF. Using our experimental results under various environmental settings, we demonstrate that MC-CF can significantly improve the schedulability of fixed-priority scheduling.

Software Engineering for Real Time Systems

IEE Review ◽  
1992 ◽  
Vol 38 (3) ◽  
pp. 112
Author(s):  
Stuart Bennett
Keyword(s):  
Software Engineering ◽  
Real Time ◽  
Real Time Systems ◽  
Time Systems

Generic Round Robin Scheduling for Real Time Systems

2017 ◽  
Vol 7 (5) ◽  
pp. 148-155
Author(s):  
Pallab Banerjee ◽  
◽  
Riya Shree ◽  
Richa Kumari Verma ◽  
◽  
...  
Keyword(s):  
Real Time ◽  
Round Robin ◽  
Real Time Systems ◽  
Time Systems

Elastic scheduling in real-time systems

2013 ◽  
Vol 32 (2) ◽  
pp. 573-577
Author(s):  
Zhi-bang YANG ◽  
Cheng XU ◽  
Xu ZHOU ◽  
Xue-qing ZHU
Keyword(s):  
Real Time ◽  
Real Time Systems ◽  
Time Systems ◽  
Elastic Scheduling
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