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Efficiency Requirements in PIM to PSM Transformations

In the paper, we provide extensions for MDA (Model Driven Architecture), taking into consideration efficiency requirements. The scope of the proposition is limited to the PIM (Platform-Independent Model) and the PSM (Platform Specific Model) extension. Efficiency requirements are maximal rates of users requests under which the system has to perform. We extend the PIM to the model containing efficiency requirements. We introduce a PSMSpec (PSM Specification) containing a system architecture, platform, efficiency requirements, and a PSMInst (PSM Instance) defining a deployment of the system. The PIM’s functional specification and efficiency requirements are transformed to the PSMSpec’s system architecture and efficiency requirements. Finally, efficiency characteristics are estimated and verified against the efficiency requirements, the PSMInst is suggested.