/*
* 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.HostDynamicWorkload;
import org.cloudbus.cloudsim.Pe;
import org.cloudbus.cloudsim.VmScheduler;
import org.cloudbus.cloudsim.power.models.PowerModel;
import org.cloudbus.cloudsim.provisioners.BwProvisioner;
import org.cloudbus.cloudsim.provisioners.RamProvisioner;
/**
* PowerHost class enables simulation of power-aware hosts.
*
* 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 PowerHost extends HostDynamicWorkload {
/** The power model. */
private PowerModel powerModel;
/**
* Instantiates a new host.
*
* @param id the id
* @param ramProvisioner the ram provisioner
* @param bwProvisioner the bw provisioner
* @param storage the storage
* @param peList the pe list
* @param vmScheduler the VM scheduler
*/
public PowerHost(
int id,
RamProvisioner ramProvisioner,
BwProvisioner bwProvisioner,
long storage,
List<? extends Pe> peList,
VmScheduler vmScheduler,
PowerModel powerModel) {
super(id, ramProvisioner, bwProvisioner, storage, peList, vmScheduler);
setPowerModel(powerModel);
}
/**
* Gets the power. For this moment only consumed by all PEs.
*
* @return the power
*/
public double getPower() {
return getPower(getUtilizationOfCpu());
}
/**
* Gets the power. For this moment only consumed by all PEs.
*
* @param utilization the utilization
* @return the power
*/
protected double getPower(double utilization) {
double power = 0;
try {
power = getPowerModel().getPower(utilization);
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
return power;
}
/**
* Gets the max power that can be consumed by the host.
*
* @return the max power
*/
public double getMaxPower() {
double power = 0;
try {
power = getPowerModel().getPower(1);
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
return power;
}
/**
* Gets the energy consumption using linear interpolation of the utilization change.
*
* @param fromUtilization the from utilization
* @param toUtilization the to utilization
* @param time the time
* @return the energy
*/
public double getEnergyLinearInterpolation(double fromUtilization, double toUtilization, double time) {
if (fromUtilization == 0) {
return 0;
}
double fromPower = getPower(fromUtilization);
double toPower = getPower(toUtilization);
return (fromPower + (toPower - fromPower) / 2) * time;
}
/**
* Sets the power model.
*
* @param powerModel the new power model
*/
protected void setPowerModel(PowerModel powerModel) {
this.powerModel = powerModel;
}
/**
* Gets the power model.
*
* @return the power model
*/
public PowerModel getPowerModel() {
return powerModel;
}
}