Scheduling Algorithms for Multiprogramming in a Hard-Real-Time Environment
Journal of the ACM (JACM)
Real-Time Virtual Resource: A Timely Abstraction for Embedded Systems
EMSOFT '02 Proceedings of the Second International Conference on Embedded Software
Periodic Resource Model for Compositional Real-Time Guarantees
RTSS '03 Proceedings of the 24th IEEE International Real-Time Systems Symposium
Scheduling within temporal partitions: response-time analysis and server design
Proceedings of the 4th ACM international conference on Embedded software
Preemptive Scheduling of Multi-criticality Systems with Varying Degrees of Execution Time Assurance
RTSS '07 Proceedings of the 28th IEEE International Real-Time Systems Symposium
On the Scheduling of Mixed-Criticality Real-Time Task Sets
RTSS '09 Proceedings of the 2009 30th IEEE Real-Time Systems Symposium
Efficient Elastic Resource Management for Dynamic Embedded Systems
TRUSTCOM '11 Proceedings of the 2011IEEE 10th International Conference on Trust, Security and Privacy in Computing and Communications
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System virtualization's consolidation in separated virtual machines provides a reasonable way to integrate formerly distinct systems into a single mixed-criticality multi-core system. We propose an adaptive resource management scheme for virtualization-based systems that have to be certified. Periodic servers and the elastic task model combine analyzability at design time with adaptability at runtime. A mode change or the enabling/disabling of tasks trigger a resource redistribution, which guarantees that a specified minimum is always allocated and obtains a fair distribution of spare capacity among the virtual machines. The partitioned scheduling and the assignment of static priorities ease certification. The scheme has the potential to improve the resource utilization and support adaptive and self-optimizing applications with strongly varying execution times.