Software Engineering

9.3.2 
Performance allocation
The performance associated with the operational requirements must be satisfied 
by the combination of functions. Therefore, the functional solution must satisfy 
the operational performance characteristics established by the operational require-
ments. The functional timing and resource utilization of the functional solution 
must resolve the performance requirements specified for the software product.
Performance allocation involves the establishment of performance budgets as 
the operational functions are decomposed. Root functions must then be analyzed to 
determine the range of execution performance measures utilizing computer science, 
mathematics, and knowledge of the computing environment performance character-
istics. Functional performance budgets must be revised to establish the functional 
specifications for each element of the functional architecture. The functional archi-
tecture is declared to be complete when the functional specifications for functional 
components and units can be verified to satisfy the software product requirements.
The allocation of performance requirements throughout the functional archi-
tecture establishes the basis for achieving software product performance require-
ments. The objective of software performance engineering is to achieve response 

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