METHOD AND DEVICE FOR SCHEDULING VIRTUAL DISK INPUT AND OUTPUT PORTS

摘要

Embodiments of the present application relate to a method for scheduling virtual disk input and output (I/O) ports, a device for scheduling virtual disk I/O ports, and a computer program product for scheduling virtual disk I/O ports. A method for scheduling virtual disk I/O ports is provided. The method includes assigning a set of service quality ratings to a corresponding set of virtual disk I/O ports based on a set of reading-writing bandwidth quotas associated with the corresponding set of virtual disk I/O ports in a physical machine, determining a total forecast value of a data bandwidth to be used by reading-writing requests and determining virtual disk I/O ports, allocating reading-writing bandwidth limits to the virtual disk I/O ports, and scheduling virtual disk I/O ports on the physical machine.

主权项

1. A method for scheduling virtual disk input and output (I/O) ports, comprising:
assigning a set of service quality ratings to a corresponding set of virtual disk I/O ports based on a set of reading-writing bandwidth quotas associated with the corresponding set of virtual disk I/O ports in a physical machine; determining a total forecast value of a data bandwidth to be used by reading-writing requests within a current time segment and determining virtual disk I/O ports corresponding to the reading-writing requests; allocating reading-writing bandwidth limits to the virtual disk I/O ports corresponding to the reading-writing requests based at least in part on the total forecast value of the data bandwidth and the service quality ratings corresponding to the virtual disk I/O ports corresponding to the reading-writing requests; and scheduling virtual disk I/O ports on the physical machine based at least in part on actual bandwidths to be used by the reading-writing requests within the current time segment and the reading-writing bandwidth limits for the virtual disk I/O ports corresponding to the reading-writing requests.