Package org.cloudbus.cloudsim.selectionpolicies.power

Class PowerVmSelectionPolicyMaximumCorrelation

java.lang.Object

org.cloudbus.cloudsim.selectionpolicies.power.PowerVmSelectionPolicy

org.cloudbus.cloudsim.selectionpolicies.power.PowerVmSelectionPolicyMaximumCorrelation

public class PowerVmSelectionPolicyMaximumCorrelation
extends PowerVmSelectionPolicy

A VM selection policy that selects for migration the VM with the Maximum Correlation Coefficient (MCC) among a list of migratable VMs.

If you are using any algorithms, policies or workload included in the power package please cite the following paper:

• Anton Beloglazov, and Rajkumar Buyya, "Optimal Online Deterministic Algorithms and Adaptive Heuristics for Energy and Performance Efficient Dynamic Consolidation of Virtual Machines in Cloud Data Centers", Concurrency and Computation: Practice and Experience (CCPE), Volume 24, Issue 13, Pages: 1397-1420, John Wiley and Sons, Ltd, New York, USA, 2012

Since:

CloudSim Toolkit 3.0

Author:

Anton Beloglazov

Constructor Summary

Constructors

Constructor	Description
PowerVmSelectionPolicyMaximumCorrelation(PowerVmSelectionPolicy fallbackPolicy)	Instantiates a new PowerVmSelectionPolicyMaximumCorrelation.

Method Summary

Modifier and Type	Method	Description
protected List<Double>	getCorrelationCoefficients(double[][] data)	Gets the correlation coefficients.
PowerVmSelectionPolicy	getFallbackPolicy()	Gets the fallback policy.
protected int	getMinUtilizationHistorySize(List<Vm> vmList)	Gets the min CPU utilization percentage history size between a list of VMs.
protected double[][]	getUtilizationMatrix(List<Vm> vmList)	Gets the CPU utilization percentage matrix for a given list of VMs.
Vm	getVmToMigrate(Host host)	Gets a VM to migrate from a given host.
void	setFallbackPolicy(PowerVmSelectionPolicy fallbackPolicy)	Sets the fallback policy.

Methods inherited from class java.lang.Object

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

Constructor Detail

PowerVmSelectionPolicyMaximumCorrelation

public PowerVmSelectionPolicyMaximumCorrelation(PowerVmSelectionPolicy fallbackPolicy)

Instantiates a new PowerVmSelectionPolicyMaximumCorrelation.

Parameters:

fallbackPolicy - the fallback policy

Method Detail

getVmToMigrate

public Vm getVmToMigrate(Host host)

Description copied from class: PowerVmSelectionPolicy

Gets a VM to migrate from a given host.

Specified by:

getVmToMigrate in class PowerVmSelectionPolicy

Parameters:

host - the host to get a Vm to migrate from

Returns:

the vm to migrate or Vm.NULL if there is not Vm to migrate

getUtilizationMatrix

protected double[][] getUtilizationMatrix(List<Vm> vmList)

Gets the CPU utilization percentage matrix for a given list of VMs.

Parameters:

vmList - the VM list

Returns:

the CPU utilization percentage matrix, where each line i is a VM and each column j is a CPU utilization percentage history for that VM.

getMinUtilizationHistorySize

protected int getMinUtilizationHistorySize(List<Vm> vmList)

Gets the min CPU utilization percentage history size between a list of VMs.

Parameters:

vmList - the VM list

Returns:

the min CPU utilization percentage history size of the VM list

getCorrelationCoefficients

protected List<Double> getCorrelationCoefficients(double[][] data)

Gets the correlation coefficients.

Parameters:

data - the data

Returns:

the correlation coefficients

getFallbackPolicy

public PowerVmSelectionPolicy getFallbackPolicy()

Gets the fallback policy.

Returns:

the fallback policy

setFallbackPolicy

public final void setFallbackPolicy(PowerVmSelectionPolicy fallbackPolicy)

Sets the fallback policy.

Parameters:

fallbackPolicy - the new fallback policy