Efficiency – The resources consumed in order to achieve their goals. In Software field, these terms are primarily used to indicate the effort put in to develop the Software and How much is customer satisfied with the product.
Efficiency is something, which is internal to the Organization that produced the Software product. It is basically- how efficiently the available resources (time, hardware, personnel, expertise etc.) were utilized to create the Software product.
Efficiency Testing : Efficiency testing test the amount of code and testing resources required by a program to perform a particular function. Software Test Efficiency is a number of test cases executed divided by the unit of time ( per hour).
Test Efficiency = (Test Defects / (Test Defects + Acceptance Defects)) * 100
The Test defects = Unit + Integration + System defects
Acceptance Defects = Bugs found by the customer