/**
* Construct a list of VMs that must be executed
*
* @param hosts
* @return
*/
private ArrayList<VMAllocation> buildVmList(ArrayList<Host> hosts) {
ArrayList<VMAllocation> vmList = new ArrayList<VMAllocation>();
for (Host host : hosts) {
vmList.addAll(host.getVMAllocations());
}
Collections.sort(vmList, new VmExecutionOrderComparator());
return vmList;
}
@Override
public void execute() {
double util = 0;
double power = 0;
double prevSlavWork;
double prevWork;
// store current work and SLA violated work values
prevSlavWork = totalSlavWork;
prevWork = totalWork;
// reset total work values
totalSlavWork = 0;
totalWork = 0;
totalPower = 0;
for (Host host : dc.getHosts()) {
// store host CPU utilization
if (!hostUtil.containsKey(host)) {
hostUtil.put(host, new DescriptiveStatistics());
}
hostUtil.get(host).addValue(host.getCpuManager().getCpuInUse());
util += host.getCpuManager().getCpuInUse();
// get VM SLA values
for (VMAllocation vmAlloc : host.getVMAllocations()) {
totalSlavWork += vmAlloc.getVm().getApplication().getTotalSLAViolatedWork();
totalWork +=
vmAlloc
.getVm()
.getApplication()
.getTotalIncomingWork(); // NOTE: This ONLY works with SINGLE TIERED applications.
// For multi-tiered applications, this will count incoming
// work multiple times!!
}
// get power consumption
power += host.getCurrentPowerConsumption();
totalPower += host.getPowerConsumed();
}
dcUtil.addValue(util);
dcPower.addValue(power);
dcPowerEfficiency.addValue(util / power);
double optimalPowerConsumption = calculateOptimalPowerConsumption(util);
dcOptimalPower.addValue(optimalPowerConsumption);
dcOptimalPowerEfficiency.addValue(util / optimalPowerConsumption);
dcOptimalPowerRatio.addValue((util / optimalPowerConsumption) / (util / power));
// records the total fraction of SLA violated incoming work since the last time interval
dcSla.addValue((totalSlavWork - prevSlavWork) / (totalWork - prevWork));
}
@Override
public void setup(Simulation simulation) {
DataCentre dc = new DataCentre(simulation);
int aantalHosts = 4;
int hostPrivCpu = 500; // Cynric - waarop gebaseerd?
int hostPrivBW = 1280; // Cynric - idem?
int aantalVMs = 8; // Cynric - waarop gebaseerd?
int VMcores = 1; // Cynric - VM 16 cores? nee toch, de host/node zelf?
int VMcpu = 2400; // Cynric - idem?
int VMram = 512; // Cynric - idem?
int VMbw = 12800 / (16 / VMcores); // Cynric - wat is het verschil met hostPrivBW?
int VMstorage = 2048;
double VMtime = 0.01; // Cynric - waarop gebaseerd?
// double utilScale=0.98; // Cynric - opnieuw, waarop gebaseerd?
// double[] cpuUtilization={0.5,0.9,0.85}; // lower, upper, and target CPU utilization in de
// hosts
// Cynric - opnieuw, waarop gebaseerd?
// int relocPolicy=30; //om de hoeveel minuten de relocation policy wordt uitgevoerd
// int consolPolicy=60; //om de hoeveel minutes de consolidation policy wordt uitgevoerd
// Cynric - maakt niet veel uit voor ons
// Add the DataCentre to the simulation
simulation.addDatacentre(dc);
// Create the HostPoolManager capability separately, as we need to reference it later to add
// hosts
HostPoolManager hostPool = new HostPoolManager();
// Create a new AutonomicManager with this capability
AutonomicManager dcAM = new AutonomicManager(simulation, hostPool);
// Install the HostStatusPolicy and VmPlacementPolicy
dcAM.installPolicy(new HostStatusPolicy(5));
// hier kiezen welke placement policy
dcAM.installPolicy(new DefaultVmPlacementPolicy());
// dcAM.installPolicy(new VWallPlacementPolicy());
// Create hosts
Host.Builder hostBuilder =
HostModels.VirtualWallHost(simulation)
.privCpu(hostPrivCpu)
.privBandwidth(hostPrivBW)
.resourceManagerFactory(new DefaultResourceManagerFactory())
.resourceSchedulerFactory(new DefaultResourceSchedulerFactory());
// Instantiate the Hosts
ArrayList<Host> hosts = new ArrayList<Host>();
for (int i = 0; i < aantalHosts; ++i) {
Host host = hostBuilder.build();
// Create an AutonomicManager for the Host, with the HostManager capability (provides access
// to the host being managed)
AutonomicManager hostAM = new AutonomicManager(simulation, new HostManager(host));
// Install a HostMonitoringPolicy, which sends status updates to the datacentre manager, set
// to execute every 5 minutes
// Cynric - waarop zijn deze vijf minuten gebaseerd?
hostAM.installPolicy(new HostMonitoringPolicy(dcAM), SimTime.minutes(5), 0);
// Install a HostOperationsPolicy, which handles basic host operations
hostAM.installPolicy(new HostOperationsPolicy());
// Optionally, we can "install" the manager into the Host. This ensures that the manager does
// not run when the host is
// not 'ON', and triggers hooks in the manager and policies on power on and off.
host.installAutonomicManager(hostAM);
// Add the Host to the DataCentre
dc.addHost(host);
// Add the Host to the HostPoolManager capability of our datacentre AutonomicManager
hostPool.addHost(host, hostAM);
hosts.add(host);
}
// Create applications
ArrayList<VmAllocationRequest> vmRequests = new ArrayList<VmAllocationRequest>();
for (int i = 0; i < aantalVMs; ++i) {
// We gebruiken geen trace aangezien we er geen geschikte hebben, we gebruik een static
// workload.
StaticWorkload workload = new StaticWorkload(simulation);
workload.setWorkLevel(100); // anders had ik geen throughput?
InteractiveApplication app =
Applications.singleTaskInteractiveApplication(
simulation, workload, VMcores, VMcpu, VMram, VMbw, VMstorage, VMtime);
InteractiveServiceLevelAgreement sla =
new InteractiveServiceLevelAgreement(app)
.responseTime(1, 1); // sla limit at 1s response time
app.setSla(sla);
// place applications
vmRequests.addAll(app.createInitialVmRequests());
}
VmPlacementEvent vmPlacementEvent = new VmPlacementEvent(dcAM, vmRequests);
simulation.sendEvent(vmPlacementEvent, 0);
}
/**
* Execute the VMs in the simulation
*
* @param hosts
*/
public void execute(ArrayList<Host> hosts) {
// retrieve ordered list of vm allocations
ArrayList<VMAllocation> vmList = buildVmList(hosts);
// calculate the resources each VM has available
for (VMAllocation vmAllocation : vmList) {
if (vmAllocation.getVm() != null) vmAllocation.getVm().prepareExecution();
}
// prepare hosts for VM execution
for (Host host : hosts) {
// if the Host is ON
if (host.getState() == Host.HostState.ON) {
// allow the Host's CPU Scheduler to prepare for scheduling
host.getCpuScheduler().prepareScheduler();
host.getCpuScheduler().beginScheduling();
// prepare the privileged domain VM for execution
host.getPrivDomainAllocation().getVm().prepareExecution();
// instruct the Host's CPU Scheduler to run the priviledged domain VM
host.getCpuScheduler().schedulePrivDomain(host.getPrivDomainAllocation());
}
}
HashSet<VMAllocation> completedVms =
new HashSet<VMAllocation>(); // set of VMs that have completed execution
boolean notDone = true; // true while execution is not complete
// execute VMs in rounds until complete. In each round, every VM has a chance to execute
do {
notDone = false; // start by assuming done
// instruct Host CPU Schedulers to begin a round of scheduling
for (Host host : hosts) {
if (host.getState() == Host.HostState.ON) host.getCpuScheduler().beginRound();
}
// execute VMs
for (VMAllocation vmAllocation : vmList) {
// if the VM has not be executed, the VM Allocation actually contains a VM, and the host is
// ON
if (!completedVms.contains(vmAllocation)
&& vmAllocation.getVm() != null
&& vmAllocation.getHost().getState()
== Host.HostState.ON) { // ensure that a VM is instantiated within the allocation
// if the CPU scheduler has not indicated that is is COMPLETE (i.e. out of resources)
if (vmAllocation.getHost().getCpuScheduler().getState()
!= CpuScheduler.CpuSchedulerState.COMPLETE) {
// run the VM
if (vmAllocation.getHost().getCpuScheduler().processVM(vmAllocation)) {
// returned true = VM is not finished executing (still has work to complete)
notDone = true; // not done yet
} else {
// returned false = VM is done (no more work to complete)
completedVms.add(vmAllocation);
}
}
}
}
// instruct Host CPU Schedulers that the round has completed
for (Host host : hosts) {
if (host.getState() == Host.HostState.ON) host.getCpuScheduler().endRound();
}
} while (notDone); // if not done, execute another round
// instruct Host CPU Schedulers that scheduling is complete
for (Host host : hosts) {
if (host.getState() == Host.HostState.ON) {
host.getCpuScheduler().endScheduling();
host.getPrivDomainAllocation().getVm().completeExecution();
}
}
// update the resourcesInUse for each VM
for (VMAllocation vmAllocation : vmList) {
if (vmAllocation.getVm() != null) {
vmAllocation.getVm().completeExecution();
}
}
}