Publication no #376
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|Diagnosing architectural run-time failures|
Bradley Schmerl and Rui Abreu.
In Proceedings of the 8th International Symposium on Software Engineering for Adaptive and Self-Managing Systems, 20-21 May 2013. Received SEAMS 2013 Best Paper Award.
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|Self-diagnosis is a fundamental capability of selfadaptive
systems. In order to recover from faults, systems need
to know which part is responsible for the incorrect behavior. In
previous work we showed how to apply a design-time diagnosis
technique at run time to identify faults at the architectural level
of a system. Our contributions address three major shortcomings
of our previous work: 1) we present an expressive, hierarchical
language to describe system behavior that can be used to
diagnose when a system is behaving different to expectation; the
hierarchical language facilitates mapping low level system events
to architecture level events; 2) we provide an automatic way to
determine how much data to collect before an accurate diagnosis
can produced; and 3) we develop a technique that allows the
detection of correlated faults between components. Our results
are validated experimentally by injecting several failures in a
system and accurately diagnosing them using our algorithm.|
Keywords: Diagnosis, Self-adaptation.
| Created: 2013-01-28 09:39:27 Modified: 2013-05-30 16:14:21|