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Performance analysis can be performed on designs or production units and systems.
A performance analysis is essential when evaluating the potential benfits, and short-comings of a product or system. A performance analysis will provide a numerical measure of system performance if one is available.
Designs can be evaulated using dimensions and values. The difference is subtle but essential to good design. Enormous amounts of time and money can be wasted pursuing improved performance, if that performance is not clearly defined before the work starts.
Dimensions: These are performance measures that can be unequivicolly measured or calculated.. Examples of Dimensions are weight, density, top speed, and length.
Values: These are performance perceptions and therefore are subjective in nature. Different people will perceive the same product as having different values. Examples of Values are user-friendliness, nice colour, good looking.
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