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Advances, Systems and Applications

Journal of Cloud Computing Cover Image

Table 7 Simulation results of scenario one (Highly heterogeneous environment, low remote fetching overhead, and stable slot processing speeds)

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

RPC = 1.5 Total number of data blocks
VPPT = ± 2.5% 3000 3500 4500 5500 6500 7500 8500
Number of blocks assigned according to the ECT rule 725.1 1225.5 2226.0 3224.3 4225.7 5227.8 6224.3
MPCT of Hadoop (time units) 139.0 140.4 127.0 123.3 120.9 116.1 115.3
MPCT of ECT (time units) 119.8 116.7 111.8 108.5 106.9 105.1 104.1
ECT reduction in MPCT 13.8% 16.9% 11.9% 12.0% 11.6% 9.4% 9.7%
NBRP under Hadoop 435.3 468.4 631.3 733.7 883.4 1030.4 1145.0
NBRP under ECT 394.0 459.0 558.3 664.0 780.4 879.2 993.6
ECT reduction in NBRP 9.5% 2.0% 11.6% 9.5% 11.7% 14.7% 13.2%