Minimizing Aperiodic Response Times in a Firm Real-Time Environment
IEEE Transactions on Software Engineering
Optimal Deadline Assignment for Scheduling Soft Aperiodic Tasks in Hard Real-Time Environments
IEEE Transactions on Computers
IEEE Transactions on Computers
Elastic Scheduling for Flexible Workload Management
IEEE Transactions on Computers
Multiple Servers and Capacity Sharing for Implementing Flexible Scheduling
Real-Time Systems - Flexible Scheduling on Real-Time Systems
Handling Execution Overruns in Hard Real-Time Control Systems
IEEE Transactions on Computers
An object-oriented tool for simulating distributed real-time control systems
Software—Practice & Experience
Rate-Based Resource Allocation Models for Embedded Systems
EMSOFT '01 Proceedings of the First International Workshop on Embedded Software
Scalable Applications for Energy-Aware Processors
EMSOFT '02 Proceedings of the Second International Conference on Embedded Software
Addressing Timeliness/Accuracy/Cost Tradeoffs in Information Collection for Dynamic Environments
RTSS '03 Proceedings of the 24th IEEE International Real-Time Systems Symposium
Resource Reservation in Dynamic Real-Time Systems
Real-Time Systems
Rate monotonic vs. EDF: judgment day
Real-Time Systems
Timeliness-Accuracy Balanced Collection of Dynamic Context Data
IEEE Transactions on Parallel and Distributed Systems
Overrun handling approaches for overload-prone soft real-time systems
Advances in Engineering Software
Adaptive Fair Sharing Control in Real-Time Systems Using Nonlinear Elastic Task Models
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Efficient scheduling of sporadic, aperiodic, and periodic tasks with complex constraints
RTSS'10 Proceedings of the 21st IEEE conference on Real-time systems symposium
Euromicro-RTS'00 Proceedings of the 12th Euromicro conference on Real-time systems
Scheduling algorithms for dynamic message streams with distance constraints in TDMA protocol
Euromicro-RTS'00 Proceedings of the 12th Euromicro conference on Real-time systems
A novel thread scheduler design for polymorphic embedded systems
CASES '11 Proceedings of the 14th international conference on Compilers, architectures and synthesis for embedded systems
Timely provisioning of mobile services in critical pervasive environments
OTM'05 Proceedings of the 2005 Confederated international conference on On the Move to Meaningful Internet Systems - Volume >Part I
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When hard periodic and firm aperiodic tasks are jointly scheduled in the same system, the processor workload can vary according to the arrival times of aperiodic requests. In order to guarantee the schedulability of the periodic task set, in overload conditions some aperiodic tasks must be rejected. In this paper we propose a technique that, in overload conditions, adds robustness to the joint scheduling of periodic and aperiodic tasks in systems with dynamic priorities. Our technique is based on an aperiodic server, called total bandwidth server, already proven effective in a previous work. Here the algorithm is first extended to efficiently handle firm aperiodic tasks and then integrated with a robust guarantee mechanism that allows to achieve graceful degradation in case of transient overloads. Extensive simulations show that the proposed new algorithm is effective in all workload conditions.