Package org.cloudsimplus.autoscaling.resources

Class ResourceScalingGradual

java.lang.Object

org.cloudsimplus.autoscaling.resources.ResourceScalingGradual

All Implemented Interfaces:

ResourceScaling

public class ResourceScalingGradual
extends Object
implements ResourceScaling

A ResourceScaling for which the capacity of the resource to be scaled will be gradually resized according to the defined scaling factor. This scaling type may not automatically move a Vm from an under or overload state, since it will increase or decrease the resource capacity the specified fraction at a time.

This gradual resize may give the opportunity for the Vm workload to return to the normal state, without requiring further scaling. However, if the workload doesn't return quickly to the normal and expected state, that may cause longer SLA violation time.

This is the default type of scaling in case one is not defined.

Since:

CloudSim Plus 1.2.0

Author:

Manoel Campos da Silva Filho

Field Summary

Fields inherited from interface org.cloudsimplus.autoscaling.resources.ResourceScaling

NULL

Constructor Summary

Constructors

Constructor	Description
ResourceScalingGradual()

Method Summary

Modifier and Type	Method	Description
double	getResourceAmountToScale(VerticalVmScaling vmScaling)	Computes the amount of resource to scale up or down, depending if the resource is over or underloaded, respectively.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ResourceScalingGradual

public ResourceScalingGradual()

Method Details

getResourceAmountToScale

public double getResourceAmountToScale(VerticalVmScaling vmScaling)

Description copied from interface: ResourceScaling

Computes the amount of resource to scale up or down, depending if the resource is over or underloaded, respectively.

Specified by:

getResourceAmountToScale in interface ResourceScaling

Parameters:

vmScaling - the VerticalVmScaling object that is in charge to scale a resource.

Returns: