IPDPS '00 Proceedings of the 15 IPDPS 2000 Workshops on Parallel and Distributed Processing
Regression testing of multi-tasking real-time systems: a problem statement
ACM SIGBED Review - Special issue: IEEE RTAS 2005 work-in-progress
Using deterministic replay for debugging of distributed real-time systems
Euromicro-RTS'00 Proceedings of the 12th Euromicro conference on Real-time systems
Software debugging and testing using the abstract diagnosis theory
Proceedings of the 2011 SIGPLAN/SIGBED conference on Languages, compilers and tools for embedded systems
Optimal instrumentation of data-flow in concurrent data structures
OPODIS'11 Proceedings of the 15th international conference on Principles of Distributed Systems
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Reproducible and deterministic testing of sequential programs can in most cases be achieved by controlling the sequence of inputs to the program. The behavior of a distributed real-time system, on the other hand, not only depends on the inputs but also on the order and timing of the concurrent tasks that execute and communicate with each other and the environment. Hence, sequential test techniques are not directly applicable, since they disregard the significance of order and timing of the tasks.In this paper we present a method for identifying all possible orderings of task starts, preemptions and completions for tasks executing in a distributed real-time system. Together with an accompanying testing strategy, this method allows test methods for sequential programs to be applied, since each identified ordering can be regarded as a sequential program. In the presented analysis and testing strategy, we consider task sets with recurring release patterns, and take into account the effects of clock synchronization and variations in start and execution times of the involved tasks.