A Fast Optimization Method for Reliability and Performance of Cloud Services Composition Application

Table 1

Parameters of fault-tolerant cloud services and software versions.

No. of cloud services	𝐿𝑐	𝑘𝑐	Software versions
				1	2	3	4	5	6	7	8
1	1	1	𝑐	5	15	7	8	12	6	—	—
			𝜏	17	10	20	32	30	75	—	—
			𝑟	0.71	0.85	0.85	0.89	0.95	0.98	—	—
2	2	2	𝑐	5	15	7	8	12	—	—	—
			𝜏	28	55	35	55	58	—	—	—
			𝑟	0.71	0.85	0.85	0.89	0.95	—	—	—
3	4	3	𝑐	4	3	4	6	5	4	9	6
			𝜏	17	20	38	38	48	50	41	63
			𝑟	0.80	0.80	0.86	0.90	0.90	0.94	0.98	0.98
4	1	2	𝑐	12	16	17	17	—	—	—	—
			𝜏	17	10	20	32	—	—	—	—
			𝑟	0.75	0.85	0.93	0.97	—	—	—	—
5	3	1	𝑐	5	9	11	7	12	—	—	—
			𝜏	30	54	40	65	70	—	—	—
			𝑟	0.70	0.80	0.80	0.80	0.89	—	—	—