Functional vs. Non-functional Properties

  • Dick Hamlet


THE SYN tools used throughout this monograph measure (for components) and predict (for systems) two behaviors: output (usually called ‘functional behavior’) and run time (an example of a contrasting ‘non-functional behavior’). As described in Chapter 14, the tools actually process as ‘run time’ an arbitrary secondary output from components and systems. The ‘non-functional’ behavior could be any property of interest, so long as there is a way to measure it at the component level and then to combine its component values into system values. For run time, measurement is straightforward using operating-system services and the series combination operator is addition, although concurrency introduces a bit of complication (Chapter 11). Throughout this chapter, run time continues to stand in for an arbitrary non-functional property. Reliability, which can be treated in much the same way as run time, is not at all straightforward and has its own Chapter 12.


Safety Factor Test Point Functional Behavior Composition Rule Memory Leak 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Dick Hamlet
    • 1
  1. 1.Portland State UniversityPortlandUSA

Personalised recommendations