Virtual machine demand estimation

摘要

A method for use in a system in which computational entities are distributed across physical computing resources to place the entities on the resources includes estimating actual resource demand for each entity on each resource based on application resource usage data collected from a data source external from the entity, computing a best allocation of the resources to the entities from the estimated actual resource demand for each entity and distributing the resources to the entities in accordance with the computed best allocation.

主权项

1. A method for use in a system in which computational entities are distributed across physical computing resources, the system including a processor and a non-transitory computer readable medium coupled to the processor and having executable instructions stored thereon, which, when executed instruct the processor to execute the method, which comprises:
tracking use time during which each entity runs on each resource, wait time during which each entity waits on a disk or input/output (I/O) unit, ready time during which each entity is ready to run on each resource but relinquishes the resource to another entity and system time for each entity; calculating an estimated actual resource demand as a sum of use and system times divided by a sum of use, wait and system times and as the sum of use and system times divided by a result of ready time subtracted from a predefined statistics period; computing a best allocation of the resources to the entities from the estimated actual resource demand for each entity such that, upon distribution of the resources to the entities, the resources will substantially satisfy the estimated actual resource demand for each entity; and distributing the resources to the entities in accordance with the computed best allocation, wherein the system time is representative of time spent in a local hypervisor resource management process.