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Production datacenters generally collect diverse applications with differentiated requirements, e.g., low latency and high throughput. Therefore, datacenter transmission schemes must strive to meet these requirements. However, despite significant efforts, prior solutions are either ineffective to satisfy different requirements or costly to apply. Besides, no scheme can accommodate to all diverse data center scenarios or dynamic traffic patterns. In this paper, we propose SmartTrans, a deep learning based latency-aware differentiated transmission service, including three main components. First, SmartTrans utilizes deep learning methods for traffic classification and flow size rank prediction. Second, according to the classified results of flows, SmartTrans adopts multilevel priority queues to execute differentiated scheduling. Third, SmartTrans enlarges the switch butter to increase the capacity of datacenter networks (DCN …