Azure门户中.NET Core 3.1的GC指标支持及采集方案问询

Will GC metrics for .NET Core 3.1 be added to the Azure Portal? #

• As of now, there’s no official confirmation from Microsoft about adding native GC metric support for .NET Core 3.1 in the Azure Portal. Since .NET Core 3.1 reached its end-of-life on December 12, 2022, it’s unlikely that Microsoft will invest in building new features or metrics for this version.

Are there Azure Portal experts available to answer this? #

• You can submit a support request directly through the Azure Portal’s Help + Support section for official guidance from Microsoft’s Azure team. Additionally, communities like Microsoft Q&A and Stack Overflow have active Azure specialists who may share insights based on their experience, though official feature roadmap updates only come from Microsoft.

Alternative solutions for collecting .NET Core 3.1 GC metrics #

Here are practical ways to capture GC metrics without native Azure Portal support:

• Application Insights Custom Telemetry: Use the System.GC class to pull metrics like collection counts and heap sizes, then send them as custom metrics to Application Insights. Example code:

  using Microsoft.ApplicationInsights;
  using System;
  
  public void TrackGcMetrics()
  {
      int gen0Collections = GC.CollectionCount(0);
      long totalHeapMemory = GC.GetTotalMemory(false);
      var telemetry = new TelemetryClient();
      telemetry.TrackMetric("GC Gen 0 Collection Count", gen0Collections);
      telemetry.TrackMetric("Total Heap Memory (Bytes)", totalHeapMemory);
  }
  

• ETW Tracing: Capture GC events via the Microsoft-Windows-DotNETRuntime ETW provider. You can use tools like dotnet-trace to collect traces, then export them to Azure Monitor for analysis.
• Custom Logging: Write GC metrics to app logs using ILogger or custom logging logic, then configure Azure Monitor to ingest these logs for visualization and alerting.

Can Grafana collect .NET Core 3.1 GC metrics in the Azure Portal environment? #

• Yes, Grafana can integrate with your Azure environment to collect and visualize these metrics:
  • If you’re sending custom GC metrics to Application Insights, use the Azure Monitor data source in Grafana to query and display the data.
  • For logs or traces stored in Azure Log Analytics or Blob Storage, use Grafana’s compatible plugins to connect and pull the GC metrics.
  • You can use Azure Managed Grafana or deploy a self-hosted Grafana instance in Azure to integrate seamlessly with your App Service resources.

内容的提问来源于stack exchange，提问作者PeterLavreniuk