Performance Specification Definition

A performance specification is a document that specifies the required performance of a product or system. It defines what the product or system must do in order to meet the needs of the user or customer. The performance specification should be clear, concise, and free of ambiguity. It should identify all requirements, both functional and non-functional.

The purpose of a performance specification is to define the necessary characteristics of a product or system so that it can be developed, manufactured, and tested. It is used as a basis for developing the detailed design of the product or system. The performance specification should be traceable to the requirements which drove its development.

Functional requirements are those that describe what the product or system must do. They are typically expressed in terms of inputs, outputs, and functions. Non-functional requirements are those that describe how the product or system must behave. They are typically expressed in terms of constraints, such as performance, reliability, safety, security, etc.

The content of a performance specification will vary depending on the type of product or system being specified. For example, the specification for a computer system would include things like processing speed, memory size, storage capacity, etc. The specification for an automobile would include things like engine size, fuel efficiency, safety features, etc.

When writing a performance specification, it is important to keep in mind who will be using the product or system and what they need it to do. The target audience for the specification should