Best Practices for Dashboards and Widgets Edit on GitHub Request doc changes

Tips and tricks to help you get the most out of the powerful features of dashboards and widgets.

Finding the Right Metric

Cloud Insights acquires counters and metrics using names that sometimes differ from data collector to data collector.

When searching for the right metric or counter for your dashboard widget, keep in mind that the metric you want could be under a different name from the one you are thinking of. While drop-down lists in Cloud Insights are usually alphabetical, sometimes a term may not show up in the list where you think it should. For example, terms like "raw capacity" and "used capacity" do not appear together in most lists.

Best practice: Use the search feature in fields such as Filter by or places like the column selector to find what you are looking for. For example, searching for "cap" will show all metrics with "capacity" in their names, no matter where they occur in the list. You can then easily select the metrics you want from that shorter list.

Here are a few alternative phrases you can try when searching for metrics:

When you want to find:

Try also searching for:

CPU

Processor

Capacity

Used capacity
Raw capacity
Provisioned capacity
Storage pools capacity
<other asset type> capacity
Written capacity

Disk Speed

Lowest disk speed
Least performing disk type

Host

Hypervisor
Hosts

Hypervisor

Host
Is hypervisor

Microcode

Firmware

Name

Alias
Hypervisor name
Storage name
<other asset type> name
Simple name
Resource name
Fabric Alias

Read / Write

Partial R/W
Pending writes
IOPS - Write
Written capacity
Latency - Read
Cache utilization - read

Virtual Machine

VM
Is virtual

This is not a comprehensive list. These are examples of possible search terms only.

Finding the Right Assets

The assets you can reference in widget filters and searches vary from asset type to asset type.

In dashboards and asset pages, the asset type around which you are building your widget determines the other asset type counters for which you can filter or add a column. Keep the following in mind when building your widget:

This asset type / counter:

Can be filtered for under these assets:

Virtual Machine

VMDK

Datastore(s)

Internal Volume
VMDK
Virtual Machine
Volume

Hypervisor

Virtual Machine
Is hypervisor
Host

Host(s)

Internal Volume
Volume
Cluster Host
Virtual Machine

Fabric

Port

This is not a comprehensive list.

Best practice: If you are filtering for a particular asset type that does not appear in the list, try building your query around an alternate asset type.

Scatter Plot Example: Knowing your Axis

Changing the order of counters in a scatter plot widget changes the axes on which the data is displayed.

About this task

This example will create a scatter plot that will allow you to see under-performing VMs that have high latency compared to low IOPS.

Steps
  1. Create or open a dashboard in edit mode and add a Scatter Plot Chart widget.

  2. Select an asset type, for example, Virtual Machine.

  3. Select the first counter you wish to plot. For this example, select Latency - Total.

    Latency - Total is charted along the X-axis of the chart.

  4. Select the second counter you wish to plot. For this example, select IOPS - Total.

    IOPS - Total is charted along the Y-axis in the chart. VMs with higher latency display on the right side of the chart. Only the top 100 highest-latency VMs are displayed, because the Top by X-axis setting is current.

    ScatterPlot example 1

  5. Now reverse the order of the counters by setting the first counter to IOPS - Total and the second to Latency - Total.

    Latency- Total is now charted along the Y-axis in the chart, and IOPS - Total along the X-axis. VMs with higher IOPS now display on the right side of the chart.

    Note that because we haven’t changed the Top by X-Axis setting, the widget now displays the top 100 highest-IOPS VMs, since this is what is currently plotted along the X-axis.

    ScatterPlot example 2

You can choose for the chart to display the Top N by X-axis, Top N by Y-axis, Bottom N by X-axis, or Bottom N by Y-axis. In our final example, the chart is displaying the Top 100 VMs that have the highest total IOPS. If we change it to Top by Y-axis, the chart will once again display the top 100 VMs that have the highest total latency.

Note that in a scatter plot chart, you can click on a point to drill down to the asset page for that resource.