fix(Fix number of hosts in the CostsExample):

The number of hosts was not enough to place the VMs and the simulation was in loop.

Signed-off-by: Manoel Campos <[email protected]>

Author: manoelcampos

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

@@ -102,7 +102,7 @@ private VmBootTimeAndOverheadExample() {
         vmList = createVms();
         cloudletList = createCloudlets();
         broker0.submitVmList(vmList);
-        vmList.get(0).addOnUpdateProcessingListener(this::updateVmProcessingListener);
+        vmList.getFirst().addOnUpdateProcessingListener(this::updateVmProcessingListener);
         broker0.submitCloudletList(cloudletList);
 
         simulation.start();
@@ -172,7 +172,7 @@ private List<Vm> createVms() {
               .setBw(1000)
               .setSize(10_000)
               .setBootModel(new BootModel(bootModelCpu, bootModelRam))
-              .setStartupDelay(VM_BOOT_DELAY)
+              .setStartupDelay(VM_BOOT_DELAY*i)
               .setShutDownDelay(VM_SHUTDOWN_DELAY);
             vmList.add(vm);
         }

src/main/java/org/cloudsimplus/examples/costs/CostsExample1.java

@@ -62,7 +62,7 @@ public class CostsExample1 {
      */
     private static final int SCHEDULING_INTERVAL = 1;
 
-    private static final int HOSTS = 2;
+    private static final int HOSTS = 4;
     private static final int HOST_PES = 8;
     private static final int HOST_MIPS = 1000;
 

src/main/java/org/cloudsimplus/examples/migration/MigrationExample1.java

@@ -29,7 +29,6 @@
 import org.cloudsimplus.brokers.DatacenterBroker;
 import org.cloudsimplus.brokers.DatacenterBrokerSimple;
 import org.cloudsimplus.builders.tables.CloudletsTableBuilder;
-import org.cloudsimplus.builders.tables.HostHistoryTableBuilder;
 import org.cloudsimplus.cloudlets.Cloudlet;
 import org.cloudsimplus.cloudlets.CloudletSimple;
 import org.cloudsimplus.core.CloudSimPlus;
@@ -236,14 +235,23 @@ private MigrationExample1(){
             comparingLong((Cloudlet c) -> c.getVm().getHost().getId())
                 .thenComparingLong(c -> c.getVm().getId());
         cloudletFinishedList.sort(cloudletComparator);
+
+        printHosts();
         new CloudletsTableBuilder(cloudletFinishedList).build();
         System.out.printf("%nHosts CPU usage History (when the allocated MIPS is lower than the requested, it is due to VM migration overhead)%n");
 
-        hostList.stream().filter(h -> h.getId() <= 2).forEach(this::printHostStateHistory);
         System.out.printf("Number of VM migrations: %d%n", migrationsNumber);
         System.out.println(getClass().getSimpleName() + " finished!");
     }
 
+    private void printHosts() {
+        System.out.println("Host ID | CPUs | MIPS");
+        System.out.println("---------------------");
+        for (final var host : hostList) {
+            System.out.printf("%7s | %4s | %s%n", host.getId(), host.getPesNumber(), (int)host.getMips());
+        }
+    }
+
     /**
      * A listener method that is called when a VM migration starts.
      * @param info information about the happened event
@@ -307,10 +315,6 @@ private void showHostAllocatedMips(final double time, final Host host) {
             time, host, host.getTotalAllocatedMips(), host.getTotalMipsCapacity());
     }
 
-    private void printHostStateHistory(final Host host) {
-        new HostHistoryTableBuilder(host).setTitle(host.toString()).build();
-    }
-
     public void createAndSubmitCloudlets(DatacenterBroker broker) {
         final var newCloudletList = new ArrayList<Cloudlet>(VM_PES.length);
         var cloudlet = Cloudlet.NULL;