Research Article
A Firefly Colony and Its Fuzzy Approach for Server Consolidation and Virtual Machine Placement in Cloud Datacenters
Table 2
Server consolidation results for VM requirements with reference values as 25% and 45% and correlation coefficients as −0.348 and −0.374.
| | Reference value | | | | Correlation coefficient | −0.348 | −0.374 | | 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 | 94 | 1.04 | 5.29 | 189 | 1.18 | 6.37 | | Firefly colony | 95 | 1.05 | 5.28 | 190 | 1.18 | 6.32 | | ACS | 96 | 1.06 | 5.32 | 191 | 1.19 | 6.28 | | MMAS | 98 | 1.08 | 5.21 | 192 | 1.20 | 6.52 | | FFD | 121 | 1.34 | 8.33 | 207 | 1.29 | 24.59 |
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