Package org.cloudbus.cloudsim.allocationpolicies.migration

Class VmAllocationPolicyMigrationLocalRegressionRobust

java.lang.Object

org.cloudbus.cloudsim.allocationpolicies.VmAllocationPolicyAbstract

org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigrationAbstract

org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigrationDynamicUpperThresholdFirstFit

org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigrationLocalRegression

org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigrationLocalRegressionRobust

All Implemented Interfaces:

VmAllocationPolicyMigration, VmAllocationPolicyMigrationDynamicUpperThreshold, VmAllocationPolicy

public class VmAllocationPolicyMigrationLocalRegressionRobust
extends VmAllocationPolicyMigrationLocalRegression

A VM allocation policy that uses Local Regression Robust (LRR) to predict host utilization (load) and define if a host is overloaded or not. It's a Best Fit policy which selects the Host with most efficient power usage to place a given VM.

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

Field Summary

Fields inherited from class org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigrationAbstract

DEF_UNDER_UTILIZATION_THRESHOLD

Fields inherited from interface org.cloudbus.cloudsim.allocationpolicies.VmAllocationPolicy

DEF_HOST_COUNT_FOR_PARALLEL_SEARCH, LOGGER, NULL

Fields inherited from interface org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigration

NULL

Constructor Summary

Constructors

Constructor	Description
VmAllocationPolicyMigrationLocalRegressionRobust(VmSelectionPolicy vmSelectionPolicy)	Creates a VmAllocationPolicyMigrationLocalRegressionRobust with a safety parameter equals to 0 and no fallback policy.
VmAllocationPolicyMigrationLocalRegressionRobust(VmSelectionPolicy vmSelectionPolicy, double safetyParameter, VmAllocationPolicyMigration fallbackVmAllocationPolicy)	Creates a VmAllocationPolicyMigrationLocalRegressionRobust.

Method Summary

Modifier and Type	Method	Description
protected double[]	getParameterEstimates(double[] reversedUsageHistory)	Gets the utilization estimates.

Methods inherited from class org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigrationLocalRegression

computeHostUtilizationMeasure, getMaximumVmMigrationTime, getOverUtilizationThreshold, getSchedulingInterval, isHostOverloaded, setSchedulingInterval

Methods inherited from class org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigrationDynamicUpperThresholdFirstFit

getFallbackVmAllocationPolicy, getSafetyParameter, setFallbackVmAllocationPolicy, setSafetyParameter

Methods inherited from class org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigrationAbstract

areHostsOverloaded, areHostsUnderloaded, defaultFindHostForVm, findHostForVmInternal, getHostCpuUsageArray, getMaxUtilizationAfterAllocation, getOptimizedAllocationMap, getPowerAfterAllocation, getPowerDifferenceAfterAllocation, getSwitchedOffHosts, getUnderUtilizationThreshold, getUtilizationOfCpuMips, getVmSelectionPolicy, getVmsToMigrateFromUnderUtilizedHost, isHostUnderloaded, isVmMigrationSupported, setUnderUtilizationThreshold, setVmSelectionPolicy

Methods inherited from class org.cloudbus.cloudsim.allocationpolicies.VmAllocationPolicyAbstract

allocateHostForVm, allocateHostForVm, allocateHostForVm, deallocateHostForVm, findHostForVm, getDatacenter, getHostCountForParallelSearch, getHostList, scaleVmVertically, setDatacenter, setFindHostForVmFunction, setHostCountForParallelSearch

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cloudbus.cloudsim.allocationpolicies.VmAllocationPolicy

allocateHostForVm, allocateHostForVm, allocateHostForVm, deallocateHostForVm, findHostForVm, getDatacenter, getHostCountForParallelSearch, getHostList, getOptimizedAllocationMap, isParallelHostSearchEnabled, isVmMigrationSupported, scaleVmVertically, setDatacenter, setFindHostForVmFunction, setHostCountForParallelSearch

Methods inherited from interface org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigration

areHostsOverloaded, areHostsUnderloaded, areHostsUnderOrOverloaded, getUnderUtilizationThreshold, getVmSelectionPolicy, isHostUnderloaded, setUnderUtilizationThreshold, setVmSelectionPolicy

Constructor Details

VmAllocationPolicyMigrationLocalRegressionRobust

public VmAllocationPolicyMigrationLocalRegressionRobust(VmSelectionPolicy vmSelectionPolicy)

Creates a VmAllocationPolicyMigrationLocalRegressionRobust with a safety parameter equals to 0 and no fallback policy.

Parameters:

vmSelectionPolicy - the policy that defines how VMs are selected for migration

VmAllocationPolicyMigrationLocalRegressionRobust

public VmAllocationPolicyMigrationLocalRegressionRobust(VmSelectionPolicy vmSelectionPolicy,
double safetyParameter,
VmAllocationPolicyMigration fallbackVmAllocationPolicy)

Creates a VmAllocationPolicyMigrationLocalRegressionRobust.

Parameters:

vmSelectionPolicy - the policy that defines how VMs are selected for migration

safetyParameter - the safety parameter

fallbackVmAllocationPolicy - the fallback VM allocation policy to be used when the over utilization host detection doesn't have data to be computed

Method Details

getParameterEstimates

protected double[] getParameterEstimates(double[] reversedUsageHistory)

Gets the utilization estimates.

Overrides:

getParameterEstimates in class VmAllocationPolicyMigrationLocalRegression

Parameters:

reversedUsageHistory - the utilization history in reverse order

Returns:

the utilization estimates