Microsoft .NET 🔗

Description 🔗

The Splunk Distribution of OpenTelemetry Collector provides this integration as the dotnet monitor type for the Smart Agent Receiver.

This monitor reports metrics for .NET applications. This monitor is only available on Windows.

Windows Performance Counters 🔗

The underlying source for these metrics are Windows Performance Counters. Most of the performance counters that queried in this monitor are gauges that represent rates per second and percentages.

This monitor reports the instantaneous values for these Windows Performance Counters. This means that in a collection interval, spikes might occur on the Performance Counters. The best way to mitigate this limitation is to increase the reporting interval on this monitor to collect more frequently.

The following is a list of the most critical .NET performance counters:

Exceptions
Logical threads
Physical threads
Heap bytes
Time in GC
Committed bytes
Pinned objects

Installation 🔗

This monitor is available in the Smart Agent Receiver, which is part of the Splunk Distribution of OpenTelemetry Collector.

To install this integration:

Deploy the Splunk Distribution of OpenTelemetry Collector to your host or container platform.
Configure the monitor, as described in the next section.

Configuration 🔗

The Splunk Distribution of OpenTelemetry Collector allows embedding a Smart Agent monitor configuration in an associated Smart Agent Receiver instance.

Note: Providing a .NET monitor entry in your Collector or Smart Agent (deprecated) configuration is required for its use. Use the appropriate form for your agent type.

Splunk Distribution of OpenTelemetry Collector 🔗

To activate this monitor in the OpenTelemetry Collector, add the following to your agent configuration:

receivers:
  smartagent/dotnet:
    type: dotnet
    ...  # Additional config

To complete the monitor activation, you must also include the smartagent/dotnet receiver item in a metrics pipeline. To do this, add the receiver item to the service > pipelines > metrics > receivers section of your configuration file.

See configuration examples for specific use cases that show how the Splunk Distribution of OpenTelemetry Collector can integrate and complement existing environments.

Smart Agent 🔗

To activate this monitor in the Smart Agent, add the following to your agent configuration:

monitors:  # All monitor config goes under this key
  - type: dotnet
    ...  # Additional config

See Smart Agent example configuration for an autogenerated example of a YAML configuration file, with default values where applicable.

Configuration settings 🔗

The following table shows the configuration options for this monitor:

Option	Required	Type	Description
`counterRefreshInterval`	no	`int64`	Number of seconds that wildcards in counter paths should be expanded and how often to refresh counters from configuration. (default: `60s`)
`printValid`	no	`bool`	Print out the configurations that match available performance counters. This option is used for debugging. (default: `false`)

Metrics 🔗

This monitor emits all metrics by default. However, none of these metrics are categorized as container/host metrics, and are all custom.

Get help 🔗

If you are not able to see your data in Splunk Observability Cloud, try these tips:

Submit a case in the Splunk Support Portal
- Available to Splunk Observability Cloud customers
Call Splunk Customer Support
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Ask a question and get answers through community support at Splunk Answers
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Join the Splunk #observability user group Slack channel to communicate with customers, partners, and Splunk employees worldwide
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To learn about even more support options, see Splunk Customer Success.

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