Task with shorter duration has higher priority   

a.       Same priority to all tasks

a.       Task with longer duration has higher priority

a.       Priority dynamically changes during each deadline

Soft real time functionality    

a.       Hard real time functionality

a.       Memory protection

a.       Burst time

Turnaround time       

a.       Deadline

a.       Turn-off time

  Central Data Flow Graph

Control Data Flow Graph

Control Digital Flow Graph

Central Digital Flow Graph

Change of State

Event

Action

State

Loop tiling

a.       Strength reduction

a.       Loop fusion

a.       Loop unrolling

Compiler

Debugger

a.       Editor

Linker

Math Libraries

a.       Hardware Abstraction Layer

Kernel

a.       Device Drivers

Constant Propagation & Dead Code Elimination

Constant Folding only

Constant Folding & Dead code elimination

Constant Propagation only