On Elasticity Measurement in Cloud Computing

Table 3

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

Arrival rate	Service rate	Start-up rate	Shut-off rate	Method		Difference
				CTMC model	Experiment
60	60	120	540	0.701205	0.706082	0.6%
60	200	120	540	0.475480	0.479752	0.9%
60	600	120	540	0.631525	0.649275	3.0%
200	60	120	540	0.731117	0.739533	1.2%
200	200	120	540	0.516099	0.521308	1.0%
200	600	120	540	0.221065	0.269039	2.2%
600	60	120	540	0.817088	0.826455	1.1%
600	200	120	540	0.687533	0.681169	0.9%
600	600	120	540	0.409537	0.491034	0.9%