Mas Decrease of CPU for VMware ESX Virtual Machines

Connect-VIServer "vCenter Address"
Function Enable-MemHotAdd($vm){
    $vmview = Get-vm $vm | Get-View
    $vmConfigSpec = New-Object VMware.Vim.VirtualMachineConfigSpec

    $extra = New-Object VMware.Vim.optionvalue
    $extra.Key="mem.hotadd"
    $extra.Value="true"
    $vmConfigSpec.extraconfig += $extra

    $vmview.ReconfigVM($vmConfigSpec)
}

Function Enable-vCpuHotAdd($vm){
    $vmview = Get-vm $vm | Get-View
    $vmConfigSpec = New-Object VMware.Vim.VirtualMachineConfigSpec

    $extra = New-Object VMware.Vim.optionvalue
    $extra.Key="vcpu.hotadd"
    $extra.Value="true"
    $vmConfigSpec.extraconfig += $extra

    $vmview.ReconfigVM($vmConfigSpec)
}

$vmlist = Import-CSV C:\Input.csv

foreach ($item in $vmlist) {
    $vmname = $item.vmname
    Shutdown-VMGuest -VM $vmname -Confirm:$False
      do {
      Write-Host "Waiting On Shutdown For VM: " $vmname
      $vm = Get-VM -Name $vmname
      $Status = $vm.PowerState
      Write-Host "Powerstate For $vmname is: " $Status
      Sleep 10
      }until($status -eq "PoweredOff")
}

foreach ($item in $vmlist) {
    $vmname = $item.vmname
      $cpu = $item.cpu
      $cores = $item.cores
    $mem = [int]$item.mem * 1024
    $spec = New-Object -Type VMware.Vim.VirtualMachineConfigSpec -Property @{'NumCoresPerSocket' = $cores;"NumCPUs" = $cpu}
      (Get-VM $vmname).ExtensionData.ReconfigVM_Task($spec)
      Set-VM -VM $vmname -MemoryMB $mem -RunAsync -Confirm:$false
      Enable-MemHotAdd $vmname
    Enable-vCpuHotAdd $vmname
}

foreach ($item in $vmlist) {
    $vmname = $item.vmname
    Start-VM -VM $vmname -RunAsync
    }
Disconnect-VIServer *