Research Article
A Firefly Colony and Its Fuzzy Approach for Server Consolidation and Virtual Machine Placement in Cloud Datacenters
Table 1
Server consolidation results for VM requirements with reference values as 25% and 45% and correlation coefficients as −0.754 and −0.755.
| | Reference value | | | | Correlation coefficient | −0.754 | −0.755 | | 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 | 95 | 1.05 | 5.31 | 192 | 1.20 | 6.39 | | Firefly colony | 96 | 1.06 | 5.28 | 193 | 1.20 | 6.35 | | ACS | 97 | 1.07 | 5.31 | 194 | 1.21 | 6.47 | | MMAS | 101 | 1.12 | 5.26 | 195 | 1.21 | 6.53 | | FFD | 125 | 1.38 | 8.34 | 218 | 1.36 | 24.61 |
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