On Elasticity Measurement in Cloud Computing

Table 4

Comparison of CTMC model results and experimental results with Gamma service times.

Arrival rate	Start-up rate	Shut-off rate	Service distribution	Method		Difference
				CTMC model	Experiment
60	120	540		0.701205	0.716401	2.2%
60	120	540		0.475480	0.476752	0.3%
60	120	540		0.631525	0.612930	3.0%
200	120	540		0.731117	0.711420	2.7%
200	120	540		0.516099	0.522762	1.3%
200	120	540		0.221065	0.227146	2.8%
600	120	540		0.817088	0.835865	2.3%
600	120	540		0.687533	0.667146	3.0%
600	120	540		0.409537	0.395865	3.3%