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Part 5: vCenter Operations Custom UI – Customizing the Top-N Analysis

Part 5: vCenter Operations Custom UI – Customizing the Top-N Analysis

Part 5 of the vCenter Operations Manager Custom UI Series will discuss details on the Top-N Analysis widget. This widget can be used as a part of your vCenter Operations Manager custom dashboards to quickly show the top resources with the highest utilization (or the lowest) for specific metrics you choose. These can be metrics from disk, memory, CPU, network, etc and allow you to quickly pinpoint resources that could be causing issues within your environment. Below are a few examples followed by detailed instruction on how to configure the widget.


top-n example

VMware Example – Display Alerts


top-n widget

VM – CPU Usage (%) Example


1) While on the custom dashboard you wish to add the Top-N Analysis widget on, click Edit within the Dashboard Tools options.

edit dashboard

Edit Dashboard Configuration


2) Drag and Drop the Top-N Analysis widget from the left column over to the right column. Click Ok.

top-n drag and drop

Drag & Drop Widget


3) You should now have a blank, unconfigured widget resting on your dashboard. To configure the widget, click Edit on the widget.

top-n edit

Edit Individual Widget


4) You should now be in the “Edit ‘Top-N Analysis’ widget” window as shown below. Immediately the configuration windows looks busy but it’s a fairly simple widget to configure. By default, the Widget Mode is set to “Tag” which provides you with the Application Health and Performance category options alongside the Problem and Alert Analysis category options. Changing the Widget mode to Metric changes the available selections at the top to Metric Analysis category – which we’re using in this example. Below are some quick notes regarding the available configurations as well as a screenshot with pertinent information.

  • Self Provider – Make sure you enable if the widget is to pull information on its own.
  • Image Redraw Rate – Fancy speak for refresh 🙂
  • Period Length – Select a predetermined time frame or current value to display. Use the Data selector beneath to limit the time frames to a data/time.
  • Bars Count –  Select how many resources to show in the live widget(5,10, or 15). Alternatively, use the “User Defined” option and enter a numeric value in the text box next to it. *Note: The numberic value within the category at the top will update as you make your selection here.
  • Depth – Determines how many levels of the selected resources’ related children that vCOps should consider for analysis.

As the screenshot below portrays, and most other widgets are configured, select the Tag on the left column, select the resource type in the middle column, and finally the metric you wish to display in the right column. *Hint: You can do a multi-select in the left column to select multiple tags. For example, selecting multiple datacenters will allow you to report on VMs across ALL datacenters rather than just a single one.

top-n config

Top-N Analysis Widget Configuration

**The configuration shown below is the direct result of the live, configured widget shown below. (except for the title).**

top-n widget

Completed Widget



About The Author

Bryan Krausen

Bryan Krausen is currently working as a Sr. Solutions Architect with experience in a vast number of platforms, specializing in AWS and HashiCorp tools.

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