Research Article
A Firefly Colony and Its Fuzzy Approach for Server Consolidation and Virtual Machine Placement in Cloud Datacenters
Table 4
Server consolidation results for VM requirements with reference values as 25% and 45% and correlation coefficients as 0.371 and 0.398.
| Reference value | | | Correlation coefficient | 0.371 | 0.398 | 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 | 92 | 1.02 | 5.27 | 180 | 1.12 | 6.23 | Firefly colony | 93 | 1.03 | 5.31 | 183 | 1.14 | 6.31 | ACS | 94 | 1.04 | 5.29 | 184 | 1.15 | 6.24 | MMAS | 96 | 1.06 | 5.21 | 185 | 1.15 | 6.47 | FFD | 112 | 1.24 | 8.21 | 195 | 1.21 | 24.54 |
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