Methodological Guidelines for Measuring Energy Consumption of Software Applications

Table 2

Evaluation of measurement techniques.

Measurement technique	PROS		CONS
	Energy	Power	Energy	Power
Instant power measurement	Precise if sampling frequency is high.	—	Physical instrumentation needed. Difficult to isolate a single software application’s contribution.
Time measurement	Precise if the exact energy stored in the battery is known.	—	Requires many repetitions of long tasks. Difficult to isolate a single software application’s contribution.
Model estimation	No instrumentation required. Easy to isolate a single software application’s contribution.		Precision not always declared.