Enable the .NET Profiler for Azure Functions apps

In this article, you use the Azure portal to:

  • View the current app settings for your Functions app.
  • Add two new app settings to enable the .NET Profiler on the Functions app.
  • Go to the Profiler page for your Functions app to view data.

Note

You can enable the Application Insights Profiler for .NET for Azure Functions apps on the App Service plan.

Prerequisites

App settings for enabling the .NET Profiler

App Setting Value
APPLICATIONINSIGHTS_CONNECTION_STRING Unique value from your App Insights resource.
APPINSIGHTS_PROFILERFEATURE_VERSION 1.0.0
DiagnosticServices_EXTENSION_VERSION ~3

Add app settings to your Azure Functions app

In the Azure portal, open your Function app Overview page:

  1. Under Settings, select Environment variables. Verify that the APPLICATIONINSIGHTS_CONNECTION_STRING setting is included in the settings list.

    Screenshot showing the App Insights connection string setting in the list.

  2. Select Add.

    Screenshot outlining the Add button for application settings.

  3. Copy the setting and its Value from the preceding table into the corresponding fields.

    Screenshot adding the app insights profiler feature version setting.

    Screenshot adding the diagnostic services extension version setting.

    Leave the Deployment slot setting blank for now.

  4. Select Apply for each value.

  5. In the Environment variables pane, select Apply, then Confirm.

    Screenshot outlining the continue button in the dialog after saving.

The app settings now show up in the table:

Screenshot showing the two new app settings in the table on the configuration pane.

Note

You can also enable the .NET Profiler by using:

Next step

Generate load and view the .NET Profiler traces

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