PRTG Manual: PerfCounter IIS Application Pool Sensor

Windows version

To work with Windows performance counters, this sensor requires that at least Windows Server 2008 R2 is installed on the probe system (on every cluster node, if on a cluster probe).

IIS version 7.5

To monitor IIS application pools, this sensor needs at least IIS version 7.5 to be installed on the target system.

Remote Registry Windows service

To work with Windows performance counters,this sensor requires that the Remote Registry Windows service runs on the target system. If this service does not run, a connection via performance counters is not possible.

To enable the service, log in to the respective system and open the services manager (for example, via services.msc). In the list, find the respective service and set its Start Type to Automatic.

Windows credentials

This sensor requires credentials for Windows systems in the settings of the parent device. We recommend that you use Windows domain credentials.

If you use local credentials, make sure that the same Windows user accounts (with the same user name and password) exist on both the probe system and the target system. Otherwise, a connection via performance counters is not possible. However, WMI connections might still work.

The user account has to be a member of the Performance Monitor Users user group on the target system.

Sensor Name

Enter a name to identify the sensor. By default, PRTG shows this name in the device tree, as well as in alarms, logs, notifications, reports, maps, libraries, and tickets.

If the name contains angle brackets (<>), PRTG replaces them with braces ({}) for security reasons. For more information, see the Knowledge Base: What security features does PRTG include?

Parent Tags

The tags that the sensor inherits from its parent device, parent group, and parent probe.

This setting is for your information only. You cannot change it.

Tags

Enter one or more tags. Confirm each tag with the Spacebar key, a comma, or the Enter key. You can use tags to group objects and use tag-filtered views later on. Tags are not case-sensitive. Tags are automatically inherited.

It is not possible to enter tags with a leading plus (+) or minus (-) sign, nor tags with parentheses (()) or angle brackets (<>).

For performance reasons, it can take some minutes until you can filter for new tags that you added.

The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:

• performancecounter
• pciisapppool

Priority

Select a priority for the sensor. This setting determines the position of the sensor in lists. The highest priority is at the top of a list. Choose from the lowest priority () to the highest priority ().

Application Pools

The name of the application pool that this sensor monitors.

Primary Channel

Select a channel from the list to define it as the primary channel. In the device tree, the last value of the primary channel is always displayed below the sensor's name. The available options depend on what channels are available for this sensor.

You can set a different primary channel later by clicking below a channel gauge on the sensor's Overview tab.

Graph Type

Define how different channels are shown for this sensor:

• Show channels independently (default): Show a graph for each channel.
• Stack channels on top of each other: Stack channels on top of each other to create a multi-channel graph. This generates a graph that visualizes the different components of your total traffic.
  You cannot use this option in combination with manual Vertical Axis Scaling (available in the channel settings).

Stack Unit

This setting is only visible if you select Stack channels on top of each other above.

Select a unit from the list. All channels with this unit are stacked on top of each other. By default, you cannot exclude single channels from stacking if they use the selected unit. However, there is an advanced procedure to do so.

Application Pool State

The overall application pool status

• Up status: Running, Unavailable for Total
• Warning status: Initialized, Shutdown Pending
• Down status: Delete Pending, Stopped, Stopping, Unavailable, Uninitialized

This channel is the primary channel by default.

Downtime

In the channel table on the Overview tab, this channel never shows any values. PRTG uses this channel in graphs and reports to show the amount of time in which the sensor was in the Down status

Worker Process Failures

The number of failures in worker processes

Worker Process Ping Failures

The number of failures in worker process pings

Worker Process Shutdown Failures

The number of failures in worker process shutdowns

Worker Process Startup Failures

The number of failures in worker process startups

Worker Processes

The number of worker processes