Forwarding task scheduling method and system for guaranteeing hierarchical time delay in virtual switch
A technology for virtual switch and task scheduling, applied in the field of scheduling methods and systems for guaranteeing hierarchical delay, can solve problems such as inability to guarantee delay, and achieve the effect of being efficient and easy to implement and guaranteeing delay requirements
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[0029] Because the traditional port-based traffic scheduling strategy only queues data packets on a certain port, it can only reduce the waiting delay of data packets on the port but cannot guarantee the waiting delay of data packets in the entire soft forwarding process of vSwitch. On the other hand, the forwarding mode in vSwitch is relatively simple, and the PMD thread operates continuously on a batch of data packets for each VM. Therefore, the method we propose is based on the entire forwarding task, rather than a certain port or stage. This requires a task scheduling method to ensure the sequence of task execution and further guarantee the delay differentiation.
[0030] To ensure hierarchical latency, VMs need to be prioritized first. The priority of each VM can be determined by the service provider. For example, delay-sensitive services (such as Web, video, etc.) can be set to a higher priority. Then let these priorities affect the order in which they can be batch-forwa...
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