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Advances, Systems and Applications

Journal of Cloud Computing Cover Image

Table 6 Simulation results of slightly heterogeneous environment

From: An improved task assignment scheme for Hadoop running in the clouds

  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) 124.2 150.1 192.5 111.9
Standard deviation of Hadoop MPCT (time units) 9.3 18.8 34.7 4.9
Average of ECT MPCT (time units) 117.2 127.1 137.5 110.4
Standard deviation of ECT MPCT (time units) 7.0 10.8 8.8 5.1
ECT reduction in average MPCT 5.6% 15.3% 28.6% 1.4%
Average NBRP under Hadoop 321.5 314.4 306.2
Standard deviation of NBRP under Hadoop 99.4 97.4 96.4
Average NBRP under ECT 226.6 82.4 7.5
Standard deviation of NBRP under ECT 80.7 60.2 10.9
ECT reduction in average NBRP 29.5% 73.8% 97.5%