تنهایی

Abstract

Software architecture is known as the fundamental basis to achieve high quality system. Not only main purpose and functionality of the system are illustrated by software architecture, but also it presents a way to describe interaction between subsystems and their components. Software product line (SPL) as a method of development in software engineering concentrates on developing a family of software that share common aspects. As SPL concentrates on developing high quality software, the ability of evaluating and predicting the performance is crucial. The main idea behind of architecture-based performance evaluation is transforming software architecture to QNM system and use QNM formula for evaluation of it.