Research Article
A Firefly Colony and Its Fuzzy Approach for Server Consolidation and Virtual Machine Placement in Cloud Datacenters
Table 5
Server consolidation results for VM requirements with reference values as 25% and 45% and correlation coefficients as 0.775 and 0.751.
| | Reference value | | | | Correlation coefficient | 0.755 | 0.751 | | Algorithm | Number of physical machines used () | Average consolidation ratio | CPU execution time (S) | Number of physical machines used () | Average consolidation ratio | CPU execution time (S) |
| | Fuzzy firefly colony | 91 | 1.01 | 5.25 | 173 | 1.08 | 6.22 | | Firefly colony | 92 | 1.02 | 5.27 | 175 | 1.09 | 6.21 | | ACS | 93 | 1.03 | 5.28 | 176 | 1.10 | 6.23 | | MMAS | 95 | 1.05 | 5.18 | 181 | 1.13 | 6.42 | | FFD | 105 | 1.16 | 8.19 | 190 | 1.18 | 24.23 |
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