/*
* 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;
/**
* The Class PowerModelSqrt.
*
* 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 & Sons, Ltd, New York, USA, 2012
*
* @author Anton Beloglazov
* @since CloudSim Toolkit 2.0
*/
public class PowerModelSqrt implements PowerModel {
/** The max power. */
private double maxPower;
/** The constant. */
private double constant;
/** The static power. */
private double staticPower;
/**
* Instantiates a new power model sqrt.
*
* @param maxPower the max power
* @param staticPowerPercent the static power percent
*/
public PowerModelSqrt(double maxPower, double staticPowerPercent) {
setMaxPower(maxPower);
setStaticPower(staticPowerPercent * maxPower);
setConstant((maxPower - getStaticPower()) / Math.sqrt(100));
}
/*
* (non-Javadoc)
* @see cloudsim.power.PowerModel#getPower(double)
*/
@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.sqrt(utilization * 100);
}
/**
* 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;
}
}