Exact(2)
From Fig. 5 a, d, compared to VNE-PSO, VNE-ABC generates 35.4% more long-term average revenue and increases the virtual network requests acceptance by 11%.
Table 7 Connection requests acceptance rate for different network loads using the relxed solution Allowed tardiness (percentage of request lifetime or duration) 50%200%% 1000% Acceptance rate 86%87%% 100% Average tardiness for accepted requests 1.98% 16.72% 219.767%.
Similar(58)
The request acceptance rate of NNFDAR is higher than those of MTDAR and MSTSAR.
However, Formula 5 sacrifices the best match to achieve a higher request acceptance rate.
Thus, both two algorithms have a relatively low request acceptance rate.
Obviously, the residual bandwidth of the network is reduced as the request acceptance rate increases, as shown in Figure 7.
The extensive simulation results further prove the feasibility and good performance of Presto in revenue, VN request acceptance ratio, computation efficiency and resource utilization.
The objectives of the proposed routing algorithms are increasing the request acceptance rate and provisioning the residual bandwidth of the whole network for a future request.
To illustrate the impact of the allowed tardiness parameter on the request acceptance ratio, the results in Table 7 are presented.
Between these algorithms, the algorithm "ProfPD" is more efficient, but this algorithm is not optimized because it always use a static sequence of strategies for each request in each IaaS provider for request acceptance.
From the perspective of users and network load, a multicast routing algorithm maximizes the request acceptance rate when a multicast tree that satisfies the minimum hop count is used for routing request [11].
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