Automatic Scaling Mechanism of Intermodal EDI System under Green Cloud Computing

Table 2

Comparison of pressure test results before and after replica expansion.

Number of copies	Index
	Request response frequency (fetches/sec)		Data throughput frequency (bytes/sec)		Maximum number of concurrent requests
	DRF	XDRF	DRF	XDRF	DRF	XDRF
2	0.1624	0.1645	32.5	33.4	60	64
4	0.3056	0.3742	65.4	66.8	113	137
6	0.4475	0.5238	85.2	87.1	152	174
8	0.5834	0.6925	112.4	114.5	184	206
10	0.7423	0.8292	121.7	124.3	216	268
12	0.7893	0.9482	137.6	139.7	262	338
14	0.8621	1.0179	142.8	145.2	287	377
16	1.0016	1.1382	146.9	150.4	321	406