Software Engineering

11.3.2 
Allocate resource budgets
Analysis of the behavioral model should be conducted to balance resource utiliza-
tion among the software functions. Resources become constrained when data pro-
cessing functions execute concurrently and require access to or control of limited 
resource assets. A resource that is unavailable to a function responds with a denial-
of-service response, which may place the function in a wait state (i.e., waiting for 
resource availability). Some resources can be managed by queuing or organizing 
functional requests for service. Prioritization of resource requests provides a basis 
for managing resources and ensuring that data processing actions are accomplished 
in the most efficient manner.
Initial resource allocations should be considered budgets that will be adjusted 
as the software design and implementation are finalized. Performance budgets rep-
resent desired objectives for each element of the physical architecture. Structural 
element specifications should identify performance requirements for implementa-
tion, however, these specifications may be adjusted to reflect the actual performance 
achieved during implementation. The software implementation and test activities 

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