Network Management in Cloud and Edge Computing by Yuchao Zhang & Ke Xu

Author:Yuchao Zhang & Ke Xu
Language: eng
Format: epub
ISBN: 9789811501388
Publisher: Springer Singapore

Queues

No matter the sequential or aggregational access schemes, the order of flows does influence the final completion result, because only when all the flows return can the final result form. So when the previous flow is heavy, and blocks the process of following ones, multiple queues can handle this scenario. The number of priority queues will affect the optimizing degree. We set the request from clients to 20, 40, 60, 80, and 100, respectively, using different numbers of priority queues (2, 3, 4, 8). Figure 4.6 gives the results, from which we can conclude that multiple queue can optimize TCT to some extent, but with the queue number increasing, the superiority is not that obvious. So for a specific DCN, the number of queues is not the more the better, but should be set to an appropriate amount by considering the overhead of adding an additional queue.

Fig. 4.6TCT comparison of different number of queues

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