PropertyCollector.RetrievePropertiesEx instead of VcVirtualMachine.recentTask

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• getAllVMsOfCluster slow vs Get - VM

  Hi all

  I'm trying to convert a simple script PowerCLI broadband vCO (or shares in the future, when debugging is available for them...)

  The PowerCLI script is very simple, it loops through all the virtual machines in a cluster and the vRAM output average / vCPU per VM.

  The problem is that the action getAllVMsOfCluster take a lot of ugly of time (more than 3 minutes!) to return on a cluster with VM ~ 200, while the Get - VM cmdlet on the same cluster take 10-20 sec.

  I think the Get - VM cmdlet uses a view and the getAllVMsOfCluster Action simply traverses the objects returned by the sdk/mob...

  Is there a way to speed up the process (except using the plug-in, PowerShell, which I try to avoid as much as possible).

  Here is the PowerShell and vCO of this simple script version:

  Here's the script PowerCLI:

  $clusterName = "mycluster.

  $cluster = get-Cluster-name $clusterName

  $vms = $cluster | Get - VM

  $nbVMs = $vms.length

  $nbvCPUs = 0

  $nbvRAM = 0

  foreach ($vm to $vms)

  {

  $nbvCPUs += $vm. NumCpu

  $nbvRAM += $vm. MemoryMB

  }

  $nbvRAM = $nbvRAM / 1024

  $nbvRAM = $nbvRAM / 1024

  $avgvRAMPerVM = $nbvRAM / $nbVMs

  $avgvCPUPerVM = $nbvCPUs / $nbVMs

  Write-Host "nbVMs: $nbVMs".

  Write-Host "nbvCPUs: $nbvCPUs".

  Write-Host "nbvRAM: $nbvRAM".

  Write-Host "avgvRAMPerVM: $avgvRAMPerVM".

  Write-Host "avgvCPUPerVM: $avgvCPUPerVM".

  I converted this to a vCO feed that looks like this:

  Entry:

  cluster as VC:ClusterComputeResource

  Output:

  avgvRAMPerVM under the number

  avgvCPUPerVM under the number

  Flow:

  Action: getAllVMsOfCluster

  Entry: Entry flow "cluster."

  Output stream: attribute "vms" in the table of VC:VirtualMachine

  Scriptable task: "do the math".

  Entry: Flow attribute "vms" in the table of VC:VirtualMachine

  Output:

  AvgvRAMPerVM output stream

  AvgvCPUPerVM output stream

  Script:

  var nbVMs = vms.length;

  var nbvCPUs = 0;

  var nbvRAM = 0;

  for (var i in SMV)

  {

  nbvCPUs += vms [i].config.hardware.numCPU;

  nbvRAM += vms [i].config.hardware.memoryMB;

  }

  nbvRAM = nbvRAM / 1024;

  avgvRAMPerVM = nbvRAM / nbVMs;

  avgvCPUPerVM = nbvCPUs / nbVMs;

  System.log ("nbVMs:" + nbVMs);

  System.log ("nbvCPUs:" + nbvCPUs);

  System.log ("nbvRAM:" + nbvRAM);

  System.log ("avgvRAMPerVM:" + avgvRAMPerVM);

  System.log ("avgvCPUPerVM:" + avgvCPUPerVM);

  I thought about it...

  Although it is not a lot of documentation for it to the vCO, by using a view I could speed things up.

  Below, the variable 'cluster' is a VC:ClusterComputeResource taken as Input of the workflow element.

  The final code looks like this:

  Set a bunch of var to store the results:

  var nbVMs = 0;

  var nbvCPUs = 0;

  var nbvRAM = 0;

  Get ViewManager & PropertyCollector singleton

  var viewManager = cluster.sdkConnection.viewManager;

  var propertyCollector = cluster.sdkConnection.propertyCollector;

  Create a ContainerView for virtual machines from this group

  var vmList = new Array();

  vmList.push ('VirtualMachine');

  Bird = viewManager.createContainerView (cluster, vmList, true);

  Create an ObjectSpec to define the origin point of the search and ignore the element root (cluster) of the research

  var objSpec = new VcObjectSpec();

  objSpec.obj = myView.reference;

  objSpec.skip = true;

  Create a TraversalSpec to identify the type of object that we are interested in.

  var traversalSpec = new VcTraversalSpec();

  traversalSpec.name = "traverseEntities";

  traversalSpec.path = "display";

  traversalSpec.skip = false;

  traversalSpec.type = "ContainerView;

  Attach the TransversalSpec to our ObjectSpec search root.

  objSpec.selectSet = new Array (traversalSpec);

  Create a PropertySpec to identify the properties that we are looking for in the selected object

  propertySpec var = new VcPropertySpec();

  propertySpec.type = 'VirtualMachine ';

  propertySpec.pathSet = new Array ('config.hardware.memoryMB', 'config.hardware.numCPU');

  Create a PropertyFilterSpec to connect the object search & property search spec

  var propertyFilterSpec = new VcPropertyFilterSpec();

  propertyFilterSpec.objectSet = new Array (objSpec);

  propertyFilterSpec.propSet = new Array (propertySpec);

  Create an object of RetrieveOptions by default (the default values are fine)

  var retrieveOptions = new VcRetrieveOptions();

  var result = null;

  to loop through the results:

  do

  {

  If (result is nothing)

  {

  Get the first batch of results (first 100 results by default?)

  result = propertyCollector.retrievePropertiesEx ([propertyFilterSpec], retrieveOptions);

  }

  on the other

  {

  During subsequent calls, get the next batch of 100 results

  result = propertyCollector.continueRetrievePropertiesEx (result.token);

  }

  If (result! = null)

  {

  for (var i in result.objects)

  {

  (var j in result.objects [i] .propSet)

  {

  var name = result.objects [i] .propSet [j] .name;

  var val = result.objects [i] .propSet [j] .val;

  If (name is 'config')

  {

  nbvCPUs += result.objects [i] [j] .propSet.val.hardware.numCPU;

  nbvRAM += result.objects [i] [j] .propSet.val.hardware.memoryMB;

  }

  }

  nbVMs ++;

  }

  }

  }

  While (result.token! = null); the "token" property to determine whether or not there are more results to recover beyond the current batch.

  I want the vRAM GB not MB.

  nbvRAM = nbvRAM / 1024;

  Average vRAM & vCPU per VM in this cluster

  var avgvRAMPerVM = nbvRAM / nbVMs;

  var avgvCPUPerVM = nbvCPUs / nbVMs;

  Save all the outputs to verify that everything works:

  System.log ("nbVMs:" + nbVMs);

  System.log ("nbvCPUs:" + nbvCPUs);

  System.log ("nbvRAM:" + nbvRAM);

  System.log ("avgvRAMPerVM:" + avgvRAMPerVM);

  System.log ("avgvCPUPerVM:" + avgvCPUPerVM);

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