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Close #19
- Version bump to CloudSim Plus 8.3.0 - Update examples - Introduces VmBootTimeAndOverheadExample Signed-off-by: Manoel Campos <[email protected]>
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‎pom.xml‎

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The module version defines the version of CloudSim Plus to be used.
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This way, it cannot be a version number which doesn't exist for CloudSim Plus.
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-->
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<version>8.2.0</version>
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<version>8.3.0</version>
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<name>CloudSim Plus Examples</name>
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<description>

‎src/main/java/org/cloudsimplus/examples/VmBootTimeAndOverheadExample.java‎

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/*
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* CloudSim Plus: A modern, highly-extensible and easier-to-use Framework for
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* Modeling and Simulation of Cloud Computing Infrastructures and Services.
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* http://cloudsimplus.org
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*
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* Copyright (C) 2015-2021 Universidade da Beira Interior (UBI, Portugal) and
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* the Instituto Federal de Educação Ciência e Tecnologia do Tocantins (IFTO, Brazil).
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*
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* This file is part of CloudSim Plus.
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*
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* CloudSim Plus is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* CloudSim Plus is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with CloudSim Plus. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.cloudsimplus.examples;
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import org.cloudsimplus.brokers.DatacenterBroker;
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import org.cloudsimplus.brokers.DatacenterBrokerSimple;
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import org.cloudsimplus.builders.tables.CloudletsTableBuilder;
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import org.cloudsimplus.cloudlets.Cloudlet;
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import org.cloudsimplus.cloudlets.CloudletSimple;
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import org.cloudsimplus.core.CloudSimPlus;
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import org.cloudsimplus.datacenters.Datacenter;
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import org.cloudsimplus.datacenters.DatacenterSimple;
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import org.cloudsimplus.hosts.Host;
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import org.cloudsimplus.hosts.HostSimple;
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import org.cloudsimplus.listeners.VmHostEventInfo;
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import org.cloudsimplus.resources.Pe;
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import org.cloudsimplus.resources.PeSimple;
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import org.cloudsimplus.utilizationmodels.BootModel;
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import org.cloudsimplus.utilizationmodels.UtilizationModel;
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import org.cloudsimplus.utilizationmodels.UtilizationModelDynamic;
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import org.cloudsimplus.vms.Vm;
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import org.cloudsimplus.vms.VmSimple;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* An example showing how to define the time for VMs to boot up
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* and how the boot process will use resources.
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*
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* @author Manoel Campos da Silva Filho
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* @since CloudSim Plus 8.3.0
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*/
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public class VmBootTimeAndOverheadExample {
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private static final int HOSTS = 1;
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private static final int HOST_PES = 8;
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private static final int HOST_MIPS = 1000; // Milion Instructions per Second (MIPS)
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private static final int HOST_RAM = 2048; //in Megabytes
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private static final long HOST_BW = 10_000; //in Megabits/s
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private static final long HOST_STORAGE = 1_000_000; //in Megabytes
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private static final int VMS = 2;
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private static final int VM_PES = 4;
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private static final int CLOUDLETS = 2;
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private static final int CLOUDLET_PES = 2;
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private static final int CLOUDLET_LENGTH = 10_000; // Milion Instructions (MI)
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/**
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* Defines the time (in seconds) each VM will take to boot up.
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*/
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private static final double VM_BOOT_DELAY = 5;
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/**
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* Defines the time (in seconds) each VM will take to shut down.
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*/
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private static final double VM_SHUTDOWN_DELAY = 2;
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private static final double SCHEDULING_INTERVAL = 1;
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private final CloudSimPlus simulation;
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private final DatacenterBroker broker0;
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private List<Vm> vmList;
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private List<Cloudlet> cloudletList;
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private Datacenter datacenter0;
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public static void main(String[] args) {
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new VmBootTimeAndOverheadExample();
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}
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private VmBootTimeAndOverheadExample() {
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/*Enables just some level of log messages.
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Make sure to import org.cloudsimplus.util.Log;*/
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//Log.setLevel(ch.qos.logback.classic.Level.WARN);
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simulation = new CloudSimPlus();
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datacenter0 = createDatacenter();
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//Creates a broker that is a software acting on behalf of a cloud customer to manage his/her VMs and Cloudlets
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broker0 = new DatacenterBrokerSimple(simulation);
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vmList = createVms();
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cloudletList = createCloudlets();
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broker0.submitVmList(vmList);
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vmList.get(0).addOnUpdateProcessingListener(this::updateVmProcessingListener);
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broker0.submitCloudletList(cloudletList);
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simulation.start();
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final var cloudletFinishedList = broker0.getCloudletFinishedList();
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new CloudletsTableBuilder(cloudletFinishedList).build();
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}
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private void updateVmProcessingListener(final VmHostEventInfo info) {
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final var vm = info.getVm();
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final String status = vm.isStartingUp() ? "(booting)" : "(running)";
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System.out.printf("%6.2f: %s %s CPU %5.1f%% RAM %5.1f%%%n", info.getTime(), vm, status, getVmCpuUsage(vm), getVmRamUsage(vm));
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}
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private static double getVmCpuUsage(Vm vm) {
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return vm.getCpuPercentUtilization() * 100.0;
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}
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private static double getVmRamUsage(final Vm vm) {
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return vm.getRam().getPercentUtilization() * 100.0;
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}
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/**
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* Creates a Datacenter and its Hosts.
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*/
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private Datacenter createDatacenter() {
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final var hostList = new ArrayList<Host>(HOSTS);
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for(int i = 0; i < HOSTS; i++) {
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final var host = createHost();
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hostList.add(host);
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}
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//Uses a VmAllocationPolicySimple by default to allocate VMs
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return new DatacenterSimple(simulation, hostList).setSchedulingInterval(SCHEDULING_INTERVAL);
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}
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private Host createHost() {
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final var peList = new ArrayList<Pe>(HOST_PES);
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//List of Host's CPUs (Processing Elements, PEs)
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for (int i = 0; i < HOST_PES; i++) {
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//Uses a PeProvisionerSimple by default to provision PEs for VMs
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peList.add(new PeSimple(HOST_MIPS));
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}
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/*
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Uses ResourceProvisionerSimple by default for RAM and BW provisioning
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and VmSchedulerSpaceShared for VM scheduling.
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*/
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return new HostSimple(HOST_RAM, HOST_BW, HOST_STORAGE, peList);
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}
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/**
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* Creates a list of VMs setting a {@link BootModel}
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* to indicate how the VM will use CPU and RAM during the boot process.
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* @see BootModel#BootModel(UtilizationModel, UtilizationModel)
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*/
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private List<Vm> createVms() {
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final var vmList = new ArrayList<Vm>(VMS);
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final var bootModelCpu = new UtilizationModelDynamic(0.5);
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final var bootModelRam = new UtilizationModelDynamic(0.3);
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for (int i = 0; i < VMS; i++) {
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//Uses a CloudletSchedulerTimeShared by default to schedule Cloudlets
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final var vm = new VmSimple(HOST_MIPS, VM_PES);
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vm.setRam(512)
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.setBw(1000)
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.setSize(10_000)
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.setBootModel(new BootModel(bootModelCpu, bootModelRam))
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.setStartupDelay(VM_BOOT_DELAY)
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.setShutDownDelay(VM_SHUTDOWN_DELAY);
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vmList.add(vm);
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}
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return vmList;
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}
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/**
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* Creates a list of Cloudlets.
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*/
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private List<Cloudlet> createCloudlets() {
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final var cloudletList = new ArrayList<Cloudlet>(CLOUDLETS);
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//UtilizationModel defining the Cloudlets use only 50% of any resource all the time
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final var utilizationModel = new UtilizationModelDynamic(0.5);
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for (int i = 0; i < CLOUDLETS; i++) {
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final var cloudlet = new CloudletSimple(CLOUDLET_LENGTH, CLOUDLET_PES, utilizationModel);
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cloudlet.setSizes(1024);
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cloudletList.add(cloudlet);
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}
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return cloudletList;
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}
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}

‎src/main/java/org/cloudsimplus/examples/power/HostActivationExample.java‎

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//Indicates if the Host will be powered on or not after creation
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final boolean activate = false;
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final var host = new HostSimple(peList, activate);
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host.setId(id);
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host.setId(id)
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.setStartupDelay(HOST_START_UP_DELAY)
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.setShutDownDelay(HOST_SHUT_DOWN_DELAY);
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final var powerModel = new PowerModelHostSimple(MAX_POWER, STATIC_POWER);
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powerModel.setStartupDelay(HOST_START_UP_DELAY)
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.setShutDownDelay(HOST_SHUT_DOWN_DELAY)
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powerModel
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.setStartupPower(HOST_START_UP_POWER)
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.setShutDownPower(HOST_SHUT_DOWN_POWER);
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‎src/main/java/org/cloudsimplus/examples/power/PowerExample.java‎

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final var vmScheduler = new VmSchedulerTimeShared();
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final var host = new HostSimple(ram, bw, storage, peList);
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host.setStartupDelay(HOST_START_UP_DELAY)
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.setShutDownDelay(HOST_SHUT_DOWN_DELAY);
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final var powerModel = new PowerModelHostSimple(MAX_POWER, STATIC_POWER);
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powerModel.setStartupDelay(HOST_START_UP_DELAY)
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.setShutDownDelay(HOST_SHUT_DOWN_DELAY)
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powerModel
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.setStartupPower(HOST_START_UP_POWER)
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.setShutDownPower(HOST_SHUT_DOWN_POWER);
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‎src/main/java/org/cloudsimplus/examples/power/PowerSpecFileExample.java‎

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final var vmScheduler = new VmSchedulerTimeShared();
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final var host = new HostSimple(ram, bw, storage, peList);
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host.setStartupDelay(HOST_START_UP_DELAY)
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.setShutDownDelay(HOST_SHUT_DOWN_DELAY);
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final var powerModel = new PowerModelHostSpec(DEF_POWER_MODEL.getPowerSpecs());
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powerModel.setStartupDelay(HOST_START_UP_DELAY)
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.setShutDownDelay(HOST_SHUT_DOWN_DELAY)
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powerModel
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.setStartupPower(HOST_START_UP_POWER)
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.setShutDownPower(HOST_SHUT_DOWN_POWER);
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System.out.println(Arrays.toString(powerModel.getPowerSpecs()));

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