Advances, Systems and Applications
Table 10 Simulation results of highly heterogeneous environment
From: An improved task assignment scheme for Hadoop running in the clouds
| Â | Scenario | |||
|---|---|---|---|---|
One | Two | Three | Four | |
RPC | 1.5 | 2.5 | 4.0 | 1.0 |
VPPT | ± 2.5% | ± 5% | ± 10% | ± 2.5% |
Average of Hadoop MPCT (time units) | 124.7 | 156.4 | 204.5 | 108.1 |
Standard deviation of Hadoop MPCT (time units) | 8.7 | 17.0 | 29.9 | 5.3 |
Average of ECT MPCT (time units) | 109.5 | 122.1 | 135.6 | 100.5 |
Standard deviation of ECT MPCT (time units) | 5.0 | 7.3 | 9.5 | 3.4 |
ECT reduction in average MPCT | 12.2% | 22.0% | 33.7% | 7.0% |
Average NBRP under Hadoop | 780.6 | 685.1 | 621.8 | ― |
Standard deviation of NBRP under Hadoop | 242.3 | 189.3 | 145.7 | ― |
Average NBRP under ECT | 691.6 | 469.7 | 287.7 | ― |
Standard deviation of NBRP under ECT | 195.4 | 151.6 | 113.1 | ― |
ECT Reduction in Average NBRP | 11.4% | 31.4% | 53.7% | ― |