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.
Performability analysis of containerized IMS through queueing networks and stochastic models
M. Di Mauro;G. Galatro;M. Longo;F. Postiglione;M. Tambasco
2022-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.