RESOURCE ALLOCATION FOR VIRTUAL MACHINES AND LOGICAL PARTITIONS

摘要

A computer determines that a utilization level of a resource has satisfied a threshold. The computer scales the allocation of the resource to the furthest of the current allocation of the resource plus a parameter and of a historical limit. The computer determines if the scaled allocation of the resource is outside the historical limit and if so, sets the historical limit equal to the scaled allocation of the resource. The computer determines whether the scaling of the allocation of the resource will result in an allocation oscillation. The computer determines if the scaled allocation of the resource is outside a boundary parameter and if so, sets the allocation of the resource equal to the boundary parameter.

主权项

1. A method for allocating a resource to a virtual machine or logical partition (LPAR), the method comprising the steps of:
a computer determining that a utilization level of a resource has satisfied a decrement threshold; the computer scaling the allocation of the resource to the mathematically lesser of (i) a sum total, via addition, of a value of the current allocation of the resource plus a value of a parameter and (ii) a historical limit, wherein the historical limit is a minimum value over a historical period; and the computer determining if the scaled allocation of the resource is outside the historical limit and if so, setting the historical limit equal to the scaled allocation of the resource.