/*
* 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.models;
/**
* Implements a power model where the power consumption is the cube of the resource usage.
*
* <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
*
* @author Anton Beloglazov
* @since CloudSim Toolkit 2.0
*/
public class PowerModelCubic implements PowerModel {
/** The max power that can be consumed. */
private double maxPower;
/** The constant that represents the power consumption
* for each fraction of resource used. */
private double constant;
/** The static power consumption that is not dependent of resource usage.
* It is the amount of energy consumed even when the host is idle.
*/
private double staticPower;
/**
* Instantiates a new power model cubic.
*
* @param maxPower the max power
* @param staticPowerPercent the static power percent
*/
public PowerModelCubic(double maxPower, double staticPowerPercent) {
setMaxPower(maxPower);
setStaticPower(staticPowerPercent * maxPower);
setConstant((maxPower - getStaticPower()) / Math.pow(100, 3));
}
@Override
public double getPower(double utilization) throws IllegalArgumentException {
if (utilization < 0 || utilization > 1) {
throw new IllegalArgumentException("Utilization value must be between 0 and 1");
}
if (utilization == 0) {
return 0;
}
return getStaticPower() + getConstant() * Math.pow(utilization * 100, 3);
}
/**
* Gets the max power.
*
* @return the max power
*/
protected double getMaxPower() {
return maxPower;
}
/**
* Sets the max power.
*
* @param maxPower the new max power
*/
protected void setMaxPower(double maxPower) {
this.maxPower = maxPower;
}
/**
* Gets the constant.
*
* @return the constant
*/
protected double getConstant() {
return constant;
}
/**
* Sets the constant.
*
* @param constant the new constant
*/
protected void setConstant(double constant) {
this.constant = constant;
}
/**
* Gets the static power.
*
* @return the static power
*/
protected double getStaticPower() {
return staticPower;
}
/**
* Sets the static power.
*
* @param staticPower the new static power
*/
protected void setStaticPower(double staticPower) {
this.staticPower = staticPower;
}
}