Architectural homeostasis in self-adaptive software-intensive cyber-physical systems

Ilias Gerostathopoulos*, Dominik Skoda, Frantisek Plasil, Tomas Bures, Alessia Knauss

*Corresponding author for this work

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

Abstract

Self-adaptive software-intensive cyber-physical systems (sasiCPS) encounter a high level of run-time uncertainty. State-of-the-art architecturebased self-adaptation approaches assume designing against a fixed set of situations that warrant self-adaptation; as a result, failures may appear when sasiCPS operate in environment conditions they are not specifically designed for. In response, we propose to increase the homeostasis of sasiCPS, i.e., the capacity to maintain an operational state despite run-time uncertainty, by introducing run-time changes to the architecture-based self-adaptation strategies according to environment stimuli. In addition to articulating the main idea of architectural homeostasis, we describe three mechanisms that reify the idea: (i) collaborative sensing, (ii) faulty component isolation from adaptation, and (iii) enhancing mode switching. Moreover, our experimental evaluation of the three mechanisms confirms that allowing a complex system to change its self-adaptation strategies helps the system recover from runtime errors and abnormalities and keep it in an operational state.

Original languageEnglish
Title of host publicationSoftware Architecture - 10th European Conference, ECSA 2016, Proceedings
EditorsAli Babar, Uwe Zdun, Bedir Tekinerdogan
PublisherSpringer Verlag
Pages113-128
Number of pages16
ISBN (Print)9783319489919
DOIs
Publication statusPublished - 1 Jan 2016
Externally publishedYes
Event10th European Conference on Software Architecture, ECSA 2016 - Copenhagen, Denmark
Duration: 28 Nov 20162 Dec 2016

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume9839 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference10th European Conference on Software Architecture, ECSA 2016
CountryDenmark
CityCopenhagen
Period28/11/162/12/16

Keywords

  • Cyber-physical systems
  • Run-time uncertainty
  • Self-adaptation strategies
  • Software architecture

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