Research on QoS guarantee mechanism of multilevel metadata in cloud storage

Research on QoS guarantee mechanism of multilevel metadata in cloud storage

Zhiyong Lichunlin

In the master-slave architecture of the cloud storage system, all data access needs to go through the metadata server, in the event of a surge in access, the metadata server may become the bottleneck of the system. Most of the current cloud storage systems employ FIFO scheduling strategies, in order to guarantee the quality of service for the quality of the service, this paper makes the QoS distinction by congestion Admission Control and queue scheduling technology, based on the priority, restricts the low priority access requests into service queues, avoids congestion To set up sliding windows on the basis of EDF dispatching strategy, and prioritize the high priority requests in the window on the basis of fairness, to ensure the service quality of high priority requests.

Research on QoS guarantee mechanism of multilevel metadata in cloud storage