Title :
Evaluation of resilience in self-adaptive systems using probabilistic model-checking
Author :
Cámara, Javier ; De Lemos, Rogério
Author_Institution :
Univ. of Coimbra, Coimbra, Portugal
Abstract :
The provision of assurances for self-adaptive systems presents its challenges since uncertainties associated with its operating environment often hamper the provision of absolute guarantees that system properties can be satisfied. In this paper, we define an approach for the verification of self-adaptive systems that relies on stimulation and probabilistic model-checking to provide levels of confidence regarding service delivery. In particular, we focus on resilience properties that enable us to assess whether the system is able to maintain trustworthy service delivery in spite of changes in its environment. The feasibility of our proposed approach for the provision of assurances is evaluated in the context of the Znn.com case study.
Keywords :
fault tolerant computing; formal verification; trusted computing; operating environment; probabilistic model-checking; resilience evaluation; self-adaptive systems; service delivery; trustworthy service delivery; Adaptation models; Data models; Monitoring; Probabilistic logic; Resilience; Servers; Time factors; assurances; evaluation; probabilistic model checking; resilience; self-adaptation; stimulation;
Conference_Titel :
Software Engineering for Adaptive and Self-Managing Systems (SEAMS), 2012 ICSE Workshop on
Conference_Location :
Zurich
Print_ISBN :
978-1-4673-1788-7
DOI :
10.1109/SEAMS.2012.6224391