Abstract
Safety-critical systems are designed to operate millions of hours without losing or harming life. Millions of hours enable events with small occurrence probability to materialise. Owing to this, rare events have to be factored when designing for millions of safe operating hours. In this paper, we apply a statistical paradigm named Extreme Value analysis for the modeling of the rare events and probabilistic risk assessment. Without loss of generality, our motivation is cyber-physical-systems where the IT infrastructure is frequently shared between functionally independent tasks and the run-time platform, such as Industry 4.0 based on 5G and edge cloud computing.
As a practical example, we present our method on a case study on a typical micro-service-based edge computing setup by measuring and analysing the container restart times in Kubernetes. The results can be used to asses and compare resilience mechanism design alternatives.
This paper partially relies on a previous joint project with Ericsson. Additionally, the research reported in this paper and carried out at the BME has been supported by the NRDI Fund based on the charter of bolster issued by the NRDI Office under the auspices of the Ministry for Innovation and Technology and a funding from the EU ECSEL JU under the H2020 Framework Programme, JU grant nr. 826452 (Arrowhead Tools project) and from the partners’ national funding authorities.
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Bozóki, S., Pataricza, A. (2021). IT Design for Resiliency Using Extreme Value Analysis. In: Habli, I., Sujan, M., Bitsch, F. (eds) Computer Safety, Reliability, and Security. SAFECOMP 2021. Lecture Notes in Computer Science(), vol 12852. Springer, Cham. https://doi.org/10.1007/978-3-030-83903-1_4
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DOI: https://doi.org/10.1007/978-3-030-83903-1_4
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