A method for ultra-low latency guarantee and resource scheduling across a data center network

Abstract

The application discloses a kind of ultra-low latency guarantee and resource scheduling method across data center network, first consider the resource allocation method of resource reservation fairness between multi-hop switches and the resource reservation mechanism that satisfies ultra-low queuing delay guarantee under the worst forwarding condition in single switch and corresponding switch scheduling mechanism are proposed.When a flow task request arrives, controller first calculates the minimum bandwidth resource required by each switch according to the traffic specification parameters of data flow, then judges whether the ultra-low latency demand of user for flow can be met under the resource reservation condition according to the switch scheduling mechanism proposed in the application, if it cannot be met, more resources are reserved in each switch according to the proportional fairness principle.This resource reservation allocation algorithm based on proportional fairness can meet the demand of ultra-low latency communication across data center network, and enable the network to bear more deterministic ultra-low latency flow.

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