# Perf Group

The Perf Group refers to a set of common performance monitors that are grouped together. It can be useful to generate custom reports using the Advanced reports feature. This help page covers the following:

- [How does a Perf group work?](https://www.manageengine.com/network-monitoring/help/perf-group.html#how-this-works)
- [How to add a performance monitor to a Perf group?](https://www.manageengine.com/network-monitoring/help/perf-group.html#add-performance-monitor)
- [How to view Perf groups?](https://www.manageengine.com/network-monitoring/help/perf-group.html#view-perf-groups)

## How does this work?

To understand how it works, let us consider an example. You monitor CPU usage for 5 devices in your network. The CPU Utilization metric associated to each of these devices may be different in terms of the protocol, for example CPU usage for a Windows device will be monitored using WMI, for other devices CPU usage may be monitored using SNMP.

Both the SNMP-based CPU metric and WMI-based metric are grouped together into one Perf Group namely CPU Utilization.

![Group performance monitors in OpManager: Perf group flowchart](https://www.manageengine.com/network-monitoring/help/images/Perf-Group-Help-Doc.png)

So, effectively those 5 devices are somehow connected to each other by the CPU Utilization metrics categorized into a Perf Group.

When creating a custom report using the [Advanced report](https://www.manageengine.com/network-monitoring/help/advanced-report.html) feature, you can select a Perf Group and a report will be created for all the devices to which that metric is associated.

## How to add a performance monitor to a Perf Group?

By default, OpManager has **64 Perf Group categories**, such as CPU utilization, Memory utilization, Disk utilization, etc. Apart from this, you can also create custom Perf Groups for other monitors as per your preferences. To create a new Perf Group, follow the steps below:

- Navigate to **Settings > Performance Monitors**.
- Click on the Edit icon for the monitor which you want to add to a new Perf Group.
- Click on the drop down next to the Perf Group field.
- Click on Add New and type the name to create a new group.

![](https://www.manageengine.com/network-monitoring/help/images/Perf_group.gif)

You can also add a new custom monitor to a Perf Group while [creating a new SNMP monitor](https://www.manageengine.com/network-monitoring/help/add-snmp-monitor.html).

## How to view Perf groups?

To view Perf Groups, navigate to **Settings > Performance Monitors** and select **Perf Groups** from the dropdown in the top-right corner.

![Group performance monitors in OpManager: Performance monitors list](https://www.manageengine.com/network-monitoring/help/images/perf-grp-1.PNG)

The Perf Groups page displays the following details:

- **Perf Group** – The name of the performance group.
- **Adaptive Threshold Status** – Indicates whether [adaptive thresholds](https://www.manageengine.com/network-monitoring/adaptive-thresholds.html) are enabled or disabled.
- **Associated Monitors** – The number of monitors linked to the Perf Group. Clicking the count reveals detailed information.

![](https://cdn.manageengine.com/network-monitoring/help/images/perf-grp.gif)

- **Associated Devices** – The number of devices linked to the Perf Group. Clicking the count provides further details.
- **Associated Device Templates** – The number of device templates associated with the Perf Group. Clicking the count shows the linked templates.
- **Actions** – Options to enable or disable adaptive thresholds and set deviation as value or percentage-based. Note that enabling adaptive thresholds for a Perf Group overwrites the existing thresholds and applies them to all associated devices, monitors, and device templates.

![Group performance monitors in OpManager: Edit perf group](https://www.manageengine.com/network-monitoring/help/images/perf-grp-4.PNG)