Estimating Non-functional Properties of Component-based Software Based on Resource Consumption

The consideration of non-functional properties in the component-oriented approach to software development is important for its success. The COMQUAD project defines a system architecture and a development methodology for component-based software with quantitative properties and adaptivity, thereby respecting non-functional properties from design to provision at runtime. Based on an elementary model of software components, we show how response time as an exemplary property is treated: Its relation to available resources is investigated and it is shown how resource requirements of the whole system can be derived from knowledge about the constituent components.