scholarly journals Allocation and scheduling of real-time periodic tasks with relative timing constraints

2002 ◽  
Author(s):  
Sheng-Tzong Cheng ◽  
A.K. Agrawala
Keyword(s):  
Real Time ◽  
Timing Constraints ◽  
Relative Timing ◽  
Periodic Tasks ◽  
Relative Timing Constraints ◽  
Time Periodic

scholarly journals Generalized Weakly Hard Schedulability Analysis for Real-Time Periodic Tasks

2021 ◽  
Vol 20 (1) ◽  
pp. 1-26
Author(s):  
Paolo Pazzaglia ◽  
Youcheng Sun ◽  
Marco Di Natale
Keyword(s):  
Real Time ◽  
Schedulability Analysis ◽  
Periodic Tasks ◽  
Time Periodic

Runtime feasibility check for non-preemptive real-time periodic tasks

2006 ◽  
Vol 97 (3) ◽  
pp. 83-87 ◽  
Author(s):  
Sangwon Kim ◽  
Joonwon Lee ◽  
Jinsoo Kim
Keyword(s):  
Real Time ◽  
Periodic Tasks ◽  
Time Periodic

scholarly journals Hierarchical Scheduling for Real-Time Periodic Tasks in Symmetric Multiprocessing

2021 ◽  
Author(s):  
Tom Springer ◽  
Peiyi Zhao
Keyword(s):  
Real Time ◽  
Response Times ◽  
Periodic Tasks ◽  
Global Scheduling ◽  
Hierarchical Scheduling ◽  
Time Performance ◽  
Performance Guarantees ◽  
Partitioned Scheduling ◽  
Hard Real Time ◽  
Time Periodic

In this paper, we present a new hierarchical scheduling framework for periodic tasks in symmetric multiprocessor (SMP) platforms. Partitioned and global scheduling are the two main approaches used by SMP based systems where global scheduling is recommended for overall performance and partitioned scheduling is recommended for hard real-time performance. Our approach combines both the global and partitioned approaches of traditional SMP-based schedulers to provide hard real-time performance guarantees for critical tasks and improved response times for soft real-time tasks. Implemented as part of VxWorks, the results are confirmed using a real-time benchmark application, where response times were improved for soft real-time tasks while still providing hard real-time performance.

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