6.3

Table Of Contents
Table 38. Single Functions (Continued)
Function Format Description
sqrt sqrt(x) Square root of x.
tan tan(x) Tangent of x.
tanh tanh(x) Hyperbolic tangent of x.
User Scenario: Formulate and Apply Your Super Metric
As the system administrator for a Web-based business, you want to improve the customer experience by
reducing the time it takes to check out with a purchase. To gauge system performance, you decide to create
a super metric that captures average CPU usage on your virtual machines that process transactions.
After you create your super metric, you assign it to the object type that contains the virtual machines to
monitor, and you analyze the results.
Procedure
1 Design a Super Metric on page 105
Because super metric formulas can be complex, plan your super metric before you use the
vRealize Operations Manager user interface to create it. The key to creating a super metric that alerts
you to the expected behavior of your objects is knowing your own enterprise and your data.
2 Add Your Super Metric on page 106
You add your super metric that captures the average CPU usage across all virtual machines. With a
super metric, you can conveniently track one value instead of several CPU usage metrics for multiple
virtual machines.
3 Visualize Your Super Metric on page 106
To verify the super metric formula, display a graph that shows its value during a past time period.
4 Associate Your Super Metric with an Object Type on page 107
When you assign your super metric to an object type, vRealize Operations Manager calculates the
super metrics for the target objects and displays it as a metric for the object type.
5 Review Your Super Metric in Troubleshooting on page 108
After you assign your super metric to an object type, you can monitor it on the Troubleshooting tab of
the object type. Tracking a single super metric on one Troubleshooting tab is easier than tracking the
metrics of separate objects on several Troubleshooting tabs.
Design a Super Metric
Because super metric formulas can be complex, plan your super metric before you use the
vRealize Operations Manager user interface to create it. The key to creating a super metric that alerts you to
the expected behavior of your objects is knowing your own enterprise and your data.
Procedure
1 Determine the objects that are involved in the behavior to track.
When you dene the metrics to use, you can select either specic objects or object types. For example,
you can select the specic objects VM001 and VM002, or you can select the object type Virtual Machine.
2 Determine the metrics to include in the super metric.
If you are tracking the transfer of packets along a network, the metrics are packets in and packets out
because you are interested in the ratio of those metrics. In another common use of super metrics, the
metrics might be the average CPU usage or average memory usage of the object type that you select.
Chapter 3 Customizing How vRealize Operations Manager Monitors Your Environment
VMware, Inc. 105