<%NUMBERING1%>.<%NUMBERING2%>.<%NUMBERING3%> PRTG Manual: PerfCounter IIS Application Pool Sensor

Windows version

This sensor requires at least Windows Server 2008 R2 on the probe system (on every cluster node, if on a cluster probe).

IIS version 7.5

This sensor requires as of Microsoft IIS 7.5 on the target system.

Remote Registry Windows service

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.

Credentials

This sensor requires credentials for Windows systems.

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 must be a member of the Performance Monitor Users user group on the target system.

IPv6

This sensor supports IPv6.

Performance impact

This sensor has a low performance impact.

Lookups

This sensor uses lookups to determine the status values of one or more channels.

Hosted probe

You cannot add this sensor to the hosted probe of a PRTG Hosted Monitor instance. If you want to use this sensor, add it to a remote probe device.

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, PRTG displays the last value of the primary channel 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 this sensor shows different channels:

• 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. PRTG stacks all channels with this unit 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