scholarly journals Sufficient Schedulability Tests for EDF-Scheduled Real-Time Systems under Interference of a High Priority Task

2012 ◽  
Author(s):  
J. Augusto Santos Jr. ◽  
George Lima
Keyword(s):  
Real Time ◽  
Real Time Systems ◽  
High Priority Task ◽  
Priority Task ◽  
Time Systems ◽  
Schedulability Tests

Causes, Effects, and Consequences of Priority Inversion in Transaction Processing

2020 ◽  
pp. 1-13 ◽  
Author(s):  
Sarvesh Pandey ◽  
Udai Shanker
Keyword(s):  
Real Time ◽  
Transaction Processing ◽  
Priority Inversion ◽  
High Priority Task ◽  
Research Areas ◽  
Priority Task ◽  
Wide Range ◽  
System Resource ◽  
Research Questions ◽  
Time Systems

The problem of priority inversion occurs when a high priority task is required to wait for completion of some other task with low priority as a result of conflict in accessing the shared system resource(s). This problem is discussed by many researchers covering a wide range of research areas. Some of the key research areas are real-time operating systems, real-time systems, real-time databases, and distributed real-time databases. Irrespective of the application area, however, the problem lies with the fact that priority inversion can only be controlled with no method available to eliminate it entirely. In this chapter, the priority inversion-related scheduling issues and research efforts in this direction are discussed. Different approaches and their effectiveness to resolve this problem are analytically compared. Finally, major research accomplishments to date have been summarized and several unanswered research questions have also been listed.

scholarly journals Efficient Exact Schedulability Tests for Fixed Priority Real-Time Systems

2008 ◽  
Vol 57 (9) ◽  
pp. 1261-1276 ◽  
Author(s):  
Robert I. Davis ◽  
Attila Zabos ◽  
Alan Burns
Keyword(s):  
Real Time ◽  
Real Time Systems ◽  
Fixed Priority ◽  
Time Systems ◽  
Schedulability Tests

scholarly journals Facilitating Preemptive Hardware System Design Using Partial Reconfiguration Techniques

2014 ◽  
Vol 2014 ◽  
pp. 1-15 ◽  
Author(s):  
Julio Dondo Gazzano ◽  
Fernando Rincon ◽  
Carlos Vaderrama ◽  
Felix Villanueva ◽  
Julian Caba ◽  
...  
Keyword(s):  
System Design ◽  
System Integration ◽  
Partial Reconfiguration ◽  
Real Time Systems ◽  
High Priority Task ◽  
Dynamically Reconfigurable ◽  
Hardware System ◽  
Priority Task ◽  
Time Systems ◽  
Remote Invocation

In FPGA-based control system design, partial reconfiguration is especially well suited to implement preemptive systems. In real-time systems, the deadline for critical task can compel the preemption of noncritical one. Besides, an asynchronous event can demand immediate attention and, then, force launching a reconfiguration process for high-priority task implementation. If the asynchronous event is previously scheduled, an explicit activation of the reconfiguration process is performed. If the event cannot be previously programmed, such as in dynamically scheduled systems, an implicit activation to the reconfiguration process is demanded. This paper provides a hardware-based approach to explicit and implicit activation of the partial reconfiguration process in dynamically reconfigurable SoCs and includes all the necessary tasks to cope with this issue. Furthermore, the reconfiguration service introduced in this work allows remote invocation of the reconfiguration process and then the remote integration of off-chip components. A model that offers component location transparency is also presented to enhance and facilitate system integration.

scholarly journals Efficient online schedulability tests for real-time systems

2003 ◽  
Vol 29 (8) ◽  
pp. 734-751 ◽  
Author(s):  
Tei-Wei Kuo ◽  
Li-Pin Chang ◽  
Yu-Hua Liu ◽  
Kwei-Jay Lin
Keyword(s):  
Real Time ◽  
Real Time Systems ◽  
Time Systems ◽  
Schedulability Tests

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
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