/*
* Title: CloudSim Toolkit
* Description: CloudSim (Cloud Simulation) Toolkit for Modeling and Simulation of Clouds
* Licence: GPL - http://www.gnu.org/copyleft/gpl.html
*
* Copyright (c) 2009-2012, The University of Melbourne, Australia
*/
package org.cloudbus.cloudsim.power;
import java.util.List;
import org.cloudbus.cloudsim.Host;
import org.cloudbus.cloudsim.util.MathUtil;
/**
* A VM allocation policy that uses Local Regression Robust (LRR) to predict host utilization (load)
* and define if a host is overloaded or not.
*
* <br/>If you are using any algorithms, policies or workload included in the power package please cite
* the following paper:<br/>
*
* <ul>
* <li><a href="http://dx.doi.org/10.1002/cpe.1867">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 & Sons, Ltd, New York, USA, 2012</a>
* </ul>
*
* @author Anton Beloglazov
* @since CloudSim Toolkit 3.0
*/
public class PowerVmAllocationPolicyMigrationLocalRegressionRobust extends
PowerVmAllocationPolicyMigrationLocalRegression {
/**
* Instantiates a new PowerVmAllocationPolicyMigrationLocalRegressionRobust.
*
* @param hostList the host list
* @param vmSelectionPolicy the vm selection policy
* @param schedulingInterval the scheduling interval
* @param fallbackVmAllocationPolicy the fallback vm allocation policy
* @param utilizationThreshold the utilization threshold
*/
public PowerVmAllocationPolicyMigrationLocalRegressionRobust(
List<? extends Host> hostList,
PowerVmSelectionPolicy vmSelectionPolicy,
double safetyParameter,
double schedulingInterval,
PowerVmAllocationPolicyMigrationAbstract fallbackVmAllocationPolicy,
double utilizationThreshold) {
super(
hostList,
vmSelectionPolicy,
safetyParameter,
schedulingInterval,
fallbackVmAllocationPolicy,
utilizationThreshold);
}
/**
* Instantiates a new PowerVmAllocationPolicyMigrationLocalRegressionRobust.
*
* @param hostList the host list
* @param vmSelectionPolicy the vm selection policy
* @param schedulingInterval the scheduling interval
* @param fallbackVmAllocationPolicy the fallback vm allocation policy
*/
public PowerVmAllocationPolicyMigrationLocalRegressionRobust(
List<? extends Host> hostList,
PowerVmSelectionPolicy vmSelectionPolicy,
double safetyParameter,
double schedulingInterval,
PowerVmAllocationPolicyMigrationAbstract fallbackVmAllocationPolicy) {
super(hostList, vmSelectionPolicy, safetyParameter, schedulingInterval, fallbackVmAllocationPolicy);
}
/**
* Gets the utilization estimates.
*
* @param utilizationHistoryReversed the utilization history reversed
* @return the utilization estimates
*/
@Override
protected double[] getParameterEstimates(double[] utilizationHistoryReversed) {
return MathUtil.getRobustLoessParameterEstimates(utilizationHistoryReversed);
}
}