PRTG Manual: PerfCounter IIS Application Pool Sensor
The PerfCounter IIS Application Pool sensor monitors a Microsoft Internet Information Services (IIS) application pool via Windows performance counters.
For a detailed list and descriptions of the channels that this sensor can show, see section Channel List.
- Dutch: PerfCounter IIS Application Pool
- French: IIS Pool d'applications via Windows PerfCounter
- German: Leistungsindikator IIS-Anwendungspool
- Japanese: パフォーマンスカウンター IIS アプリケーションプール
- Portuguese: Pool de aplicativos IIS (PerfCounter)
- Russian: Пул приложений IIS (PerfCounter)
- Simplified Chinese: 性能计数器 IIS 应用程序池
- Spanish: Grupo de aplicaciones IIS (PerfCounter)
- This sensor requires at least Windows Server 2008 R2 on the probe system.
- This sensor requires Microsoft Internet Information Services (IIS) as of version 7.5 on the target system.
- This sensor requires that the Remote Registry Windows service runs on the target system.
- This sensor requires credentials for Windows systems in the settings of the parent device.
- This sensor supports IPv6.
- This sensor has a low performance impact.
- This sensor uses lookups to determine the status values of one or more channels.
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.
Requirement |
Description |
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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). |
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To monitor IIS application pools, this sensor needs at least IIS version 7.5 to be installed on the target system. |
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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. |
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This sensor requires credentials for Windows systems in the settings of the parent device. We recommend that you use Windows domain credentials.
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Setting |
Description |
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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.
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Parent Tags |
The tags that the sensor inherits from its parent device, parent group, and parent probe.
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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.
The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:
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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 ( |
Setting |
Description |
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Application Pools |
The name of the application pool that this sensor monitors. |
Setting |
Description |
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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.
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Graph Type |
Define how different channels are shown for this sensor:
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Stack Unit |
This setting is only visible if you enable Stack channels on top of each other as Graph Type. 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. |
By default, all of these settings are inherited from objects that are higher in the hierarchy. We recommend that you change them centrally in the root group settings if necessary. To change a setting for this object only, click under the corresponding setting name to disable the inheritance and to display its options.
For more information, see section Inheritance of Settings.
For more information, see section Root Group Settings, section Scanning Interval.
Schedules, Dependencies, and Maintenance Window
You cannot interrupt the inheritance for schedules, dependencies, and maintenance windows. The corresponding settings from the parent objects are always active. However, you can define additional schedules, dependencies, and maintenance windows. They are active at the same time as the parent objects' settings.
For more information, see section Root Group Settings, section Schedules, Dependencies, and Maintenance Window.
For more information, see section Root Group Settings, section Access Rights.
Which channel units are available depends on the sensor type and the available parameters. If no configurable channels are available, this field shows No configurable channels.
For more information, see section Root Group Settings, section Channel Unit Configuration.
Which channels the sensor actually shows might depend on the target device, the available components, and the sensor setup.
Channel |
Description |
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Application Pool State |
The overall application pool status
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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 |
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