Look-ahead energy efficient VM allocation approach for data centers

Journal of Cloud Computing

Advances, Systems and Applications

Table 2 Threshold usage differences of energy efficiency techniques

Technique	Threshold		Papers
Allocation	Up to fully loaded	Single resource	[6, 27, 28]
	Up to fully loaded	Multiple resources	[29]
	Up to optimal utilization rate	Single resource	[26]
	Up to optimal utilization rate	Multiple resources	[2, 13]
Migration	Single threshold	Single resource	[25]
Migration	Multiple thresholds	Single resource	[31, 33, 34]