Military Communications and Information Technology: A Trusted ...

Applying NAF for Performance Analysis:
Performance Analysis of SOA Systems
Using LQN Models
Arkadiusz Wrzosk
Military University of Technology, Warsaw, Poland,
awrzosk@wat.edu.pl
Abstract: Service Oriented Architecture (SOA) is a concept of architecture that supports interoperability
which is a key factor to achieve network enabled capability. However, SOA principles have
also negative impact on performance. Performance problems detected during the mission when
the system is exploited can affect mission results. Late error correction in the software architecture
can greatly increase costs. This paper describes the tools which can be used for design and performance
evaluation of SOA systems. NATO Architecture Framework is used to document various
views of architecture. Layered Queuing Networks are used to build a performance model of SOA
system. An example of the system design and its performance model are presented to illustrate how
described tools can be used for the performance analysis.
Keywords: SOA; NAF; LQN; UML, performance; MARTE; SoaML
I. Introduction
Systems used during any mission led by NATO in collaboration with Nongovernmental
organizations (NGO) create complex, distributed and heterogeneous
environment. Network-enabled capability (NEC) require interoperability
of the information systems provided by various mission members. The integration
of heterogeneous systems can be time-consuming and expensive. Furthermore,
the diversity of missions require from the used systems to be flexible and scalable.
Described requirements force changes in the approach to system design.
Service Oriented Architecture (SOA) is a concept of architecture that supports
interoperability, scalability and flexibility of heterogeneous systems. SOA transforms
architecture style of an application into a set of connected services (internal and
external provided by nations), used when they are considered necessary.
Very important aspect of the mission systems are time constraints in which
they operate. Operational processes realized during mission use services provided
by these systems. Furthermore, the existing network infrastructure is used to transmit
data on mission field. Therefore, the services performance and the network