학술논문
Performability Analysis of Containerized IMS through Queueing Networks and Stochastic Models
Document Type
Conference
Source
NOMS 2022-2022 IEEE/IFIP Network Operations and Management Symposium Network Operations and Management Symposium, NOMS 2022-2022 IEEE/IFIP. :1-8 Apr, 2022
Subject
Language
ISSN
2374-9709
Abstract
As a case study of a novel approach to characterize service chains in terms of performance and availability, we consider a containerized IP Multimedia Subsystem (cIMS) infrastructure. The performance analysis is carried out by exploiting the queueing network decomposition method useful to model each cIMS node as a realistic M/G/c system, jointly with the solution of a convex optimization problem for containers allocation. Such a solution is used to feed the availability analysis (faced through the Stochastic Reward Network technique) amenable to derive a set of configurations guaranteeing a given availability target at minimum cost. The whole analysis is supported by a testbed based on the Clearwater platform used to derive some experimental parameters values.