<%NUMBERING1%>.<%NUMBERING2%>.<%NUMBERING3%> PRTG Manual: Application Server Health (Autonomous) Sensor

Performance impact

• This sensor has a very low performance impact.

Limits

• This sensor has predefined limits for several metrics.

Sensor creation

• PRTG automatically creates this sensor. You cannot add it manually.

New UI and API

• This sensor is part of the new UI and API. For more information, see the Knowledge Base: I want to use the new UI and new API. What do I need to know?

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.

API Requests

The number of API requests

Average CPU Utilization (%)

The CPU usage of the PRTG application server process (%)

Core Messages

The number of messages that the PRTG application server receives from the PRTG core server

CPU Utilization of Garbage Collector (%)

The CPU usage of the PRTG application server garbage collector (%)

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

Dropped API Requests

The number of API requests per second that were dropped due to timeouts

This channel has default limits:

• Upper error limit: 5

• Upper warning limit: 1

Free Memory (%)

The free system memory of the PRTG application server system (%)

Health

The sums of the PRTG application server state as a value between 100% (healthy) and 0% (unhealthy). Investigate if values are frequently under 100%.

This channel is the primary channel by default.

Heap Size (%)

The heap size of the memory that the PRTG application server uses (%)

Process Memory Usage

The memory usage of the PRTG application server process

Response Time

The average response time of the new API

Response Time 95th Percentile

The 95th percentile of the response time of the new API

Routines

The number of concurrently running routines in the PRTG application server

Sessions

The number of active user sessions

Stack Size (%)

The relative stack size of the memory that the PRTG application server uses (%)