Feasibility problems for recurring tasks on one processor
MFCS '90 Selected papers of the 15th international symposium on Mathematical foundations of computer science
Real-Time Systems
Resource kernels: a resource-centric approach to real-time and multimedia systems
Readings in multimedia computing and networking
Approximation algorithms
Proceedings of the 8th European software engineering conference held jointly with 9th ACM SIGSOFT international symposium on Foundations of software engineering
Interface Theories for Component-Based Design
EMSOFT '01 Proceedings of the First International Workshop on Embedded Software
Analysis of Hierar hical Fixed-Priority Scheduling
ECRTS '02 Proceedings of the 14th Euromicro Conference on Real-Time Systems
Efficient Scheduling of Real-Time Multi-Task Applications in Dynamic Systems
RTAS '00 Proceedings of the Sixth IEEE Real Time Technology and Applications Symposium (RTAS 2000)
Scheduling real-time applications in an open environment
RTSS '97 Proceedings of the 18th IEEE Real-Time Systems Symposium
A Fixed-Priority-Driven Open Environment for Real-Time Applications
RTSS '99 Proceedings of the 20th IEEE Real-Time Systems Symposium
A Model of Hierarchical Real-Time Virtual Resources
RTSS '02 Proceedings of the 23rd IEEE Real-Time Systems Symposium
Resource Partition for Real-Time Systems
RTAS '01 Proceedings of the Seventh Real-Time Technology and Applications Symposium (RTAS '01)
HLS: A Framework for Composing Soft Real-Time Schedulers
RTSS '01 Proceedings of the 22nd IEEE Real-Time Systems Symposium
FUNDAMENTAL DESIGN PROBLEMS OF DISTRIBUTED SYSTEMS FOR THE HARD-REAL-TIME ENVIRONMENT
FUNDAMENTAL DESIGN PROBLEMS OF DISTRIBUTED SYSTEMS FOR THE HARD-REAL-TIME ENVIRONMENT
Periodic Resource Model for Compositional Real-Time Guarantees
RTSS '03 Proceedings of the 24th IEEE International Real-Time Systems Symposium
An Event Stream Driven Approximation for the Analysis of Real-Time Systems
ECRTS '04 Proceedings of the 16th Euromicro Conference on Real-Time Systems
Biasing Effects in Schedulability Measures
ECRTS '04 Proceedings of the 16th Euromicro Conference on Real-Time Systems
Scheduling within temporal partitions: response-time analysis and server design
Proceedings of the 4th ACM international conference on Embedded software
Compositional Real-Time Scheduling Framework
RTSS '04 Proceedings of the 25th IEEE International Real-Time Systems Symposium
Real-time interfaces for interface-based design of real-time systems with fixed priority scheduling
Proceedings of the 5th ACM international conference on Embedded software
Hierarchical Fixed Priority Pre-Emptive Scheduling
RTSS '05 Proceedings of the 26th IEEE International Real-Time Systems Symposium
Interface-Based Design of Real-Time Systems with Hierarchical Scheduling
RTAS '06 Proceedings of the 12th IEEE Real-Time and Embedded Technology and Applications Symposium
An Interface Algebra for Real-Time Components
RTAS '06 Proceedings of the 12th IEEE Real-Time and Embedded Technology and Applications Symposium
Real-time interfaces for composing real-time systems
EMSOFT '06 Proceedings of the 6th ACM & IEEE International conference on Embedded software
Compositional Analysis Framework Using EDP Resource Models
RTSS '07 Proceedings of the 28th IEEE International Real-Time Systems Symposium
Compositional real-time scheduling framework with periodic model
ACM Transactions on Embedded Computing Systems (TECS)
Hierarchical Scheduling Framework for Virtual Clustering of Multiprocessors
ECRTS '08 Proceedings of the 2008 Euromicro Conference on Real-Time Systems
Advanced Hierachical Event-Stream Model
ECRTS '08 Proceedings of the 2008 Euromicro Conference on Real-Time Systems
Approximate Bandwidth Allocation for Compositional Real-Time Systems
ECRTS '09 Proceedings of the 2009 21st Euromicro Conference on Real-Time Systems
EDF-schedulability of synchronous periodic task systems is coNP-hard
SODA '10 Proceedings of the twenty-first annual ACM-SIAM symposium on Discrete Algorithms
RTSS'10 Proceedings of the 21st IEEE conference on Real-time systems symposium
Bandwidth allocation for fixed-priority-scheduled compositional real-time systems
ACM Transactions on Embedded Computing Systems (TECS)
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Allocation of bandwidth among components is a fundamental problem in compositional real-time systems. State-of-the-art algorithms for bandwidth allocation use either exponential-time or pseudo-polynomial-time techniques for exact allocation, or linear-time, utilization-based techniques which may over-provision bandwidth. In this paper, we propose research into a third possible approach: parametric approximation algorithms for bandwidth allocation in compositional real-time systems. We develop a fully-polynomial-time approximation scheme (FPTAS) for allocating bandwidth for sporadic task systems scheduled by earliest-deadline first (EDF) upon an Explicit-Deadline Periodic (EDP) resource. Our algorithm takes, as parameters, the task system and an accuracy parameter 驴0, and returns a bandwidth which is guaranteed to be at most a factor (1+驴) more than the optimal minimum bandwidth required to successfully schedule the task system. Furthermore, the algorithm has time complexity that is polynomial in the number of tasks and 1/驴.