Performance analysis of a rule-based SOA component for real-time applications
Alexander Cameron, Markus Stumptner, Dhandapani Nandagopal, Wolfgang Mayer, Todd Mansell · 2013
In this paper we consider an event based architectural component that may overcome the present reluctance to the use of Service Orientation (SOA) in military distributed real-time environments. In particular, we propose a hybrid architecture component that is decentralised in all respects, making it more reactive to real-time events, as well as being easier to analyse and adapt to changing needs. As centralised scheduling and orchestration of SOA services does not scale to distributed systems, our architecture removes this key inhibitor by distributing the data and control flow to a rule-driven Distributed Real-Time SOA (DRT-SOA) component that resides with each service. Embedded deadline driven task scheduling means each service can now dynamically adjust to changes in process priorities. We also propose a method of analysing the performance of the new architecture using the dynamics of Petri Nets and the guarantees of Real-Time Calculus. We present task level worst case analysis results using the proposed method and also present results obtained from an implementation of the proposed architecture in a naval combat system context.