How to use

allocatePesForVm

method

in

org.cloudbus.cloudsim.Host

/**
 * Gets the power after allocation.
 *
 * @param host the host.
 * @param vm the virtual machine.
 * @return the power usage after allocation of the virtual machine.
 */
protected double getPowerAfterAllocation(PowerHost host, Vm vm) {
  List<Double> allocatedMipsForVm = null;
  PowerHost allocatedHost = (PowerHost) vm.getHost();
  if (allocatedHost != null) {
    allocatedMipsForVm = allocatedHost.getAllocatedMipsForVm(vm);
  }
  if (!host.allocatePesForVm(vm, vm.getCurrentRequestedMips())) {
    return -1;
  }
  double power = host.getPower();
  host.deallocatePesForVm(vm);
  if (allocatedHost != null && allocatedMipsForVm != null) {
    vm.getHost().allocatePesForVm(vm, allocatedMipsForVm);
  }
  return power;
}

  /**
   * Gets the max utilization among the PEs of a given VM placed at a given host.
   * @param host The host where the VM is placed
   * @param vm The VM to get the max PEs utilization
   * @return The max utilization among the PEs of the VM
   */
protected double getMaxUtilizationAfterAllocation(NetworkHost host, Vm vm) {
  List<Double> allocatedMipsForVm = null;
  NetworkHost allocatedHost = (NetworkHost) vm.getHost();
  if (allocatedHost != null) {
    allocatedMipsForVm = vm.getHost().getAllocatedMipsForVm(vm);
  }
  if (!host.allocatePesForVm(vm, vm.getCurrentRequestedMips())) {
    return -1;
  }
  double maxUtilization = host.getMaxUtilizationAmongVmsPes(vm);
  host.deallocatePesForVm(vm);
  if (allocatedHost != null && allocatedMipsForVm != null) {
    vm.getHost().allocatePesForVm(vm, allocatedMipsForVm);
  }
  return maxUtilization;
}

/**
 * Gets the maximum utilization after allocation.
 *
 * @param host the host.
 * @param vm the virtual machine.
 * @return the maximum utilization after allocation of the virtual machine.
 */
protected double getMaxUtilizationAfterAllocation(PowerHost host, Vm vm) {
  List<Double> allocatedMipsForVm = null;
  PowerHost allocatedHost = (PowerHost) vm.getHost();
  if (allocatedHost != null) {
    allocatedMipsForVm = vm.getHost().getAllocatedMipsForVm(vm);
  }
  if (!host.allocatePesForVm(vm, vm.getCurrentRequestedMips())) {
    return -1;
  }
  double maxUtilization = host.getMaxUtilizationAmongVmsPes(vm);
  host.deallocatePesForVm(vm);
  if (allocatedHost != null && allocatedMipsForVm != null) {
    vm.getHost().allocatePesForVm(vm, allocatedMipsForVm);
  }
  return maxUtilization;
}