Title: Performability modelling and analysis of server virtualised systems subject to workload-dependent software aging
Authors: Mohamed Escheikh; Zayneb Tayachi; Kamel Barkaoui
Addresses: Syscom Lab, ENIT, University of Tunis El Manar, Tunis, Tunisia ' Cedric Lab, Conservatoire National des Arts et Métiers, Paris, France; Syscom Lab, ENIT, University of Tunis El Manar, Tunis, Tunisia ' Cedric Lab, Conservatoire National des Arts et Métiers, Paris, France
Abstract: This paper tackles performability modelling and analysis of versatile server virtualised systems subject to workload-dependent software aging, failures and rejuvenation. We develop a modular modelling approach based on stochastic reward nets to investigate dependencies between several server virtualised system modules including virtual machine monitor, virtual machine, data intensive applications and workload-aware power management mechanism. Two case studies are considered, each of them accounts for a specific virtual machine monitor rejuvenation technique (Cold-VM or Migrate-VM). We show through numerical analysis how steady-state availability and power-performance metric are impacted by workload-dependent software aging and workload burstiness.
Keywords: server virtualisation systems; workload-dependent software aging; software rejuvenation; performability; stochastic reward nets; SRNs; workload-aware power management.
International Journal of Critical Computer-Based Systems, 2019 Vol.9 No.3, pp.248 - 292
Accepted: 27 Jun 2019
Published online: 14 Jan 2020 *