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Merged
merged 6 commits into from
Nov 21, 2025
Merged

Fix orphaned spans in WCF traces #7842

merged 6 commits into from
Nov 21, 2025

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@andrewlock
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@andrewlock andrewlock commented Nov 19, 2025 •
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Summary of changes

Fixes orphan traces in WCF

Reason for change

Many customers have reported that in v3, with "delayed WCF" instrumentation enabled, they get orphan spans. This can be easily reproduced, so this PR fixes the issue.

Background

There are two "modes" WCF can operate in: delayed instrumentation, and "simple" instrumentation. Delayed instrumentation was introduced in #1992 to avoid a problematic error scenario. Instead of instrumenting early across the whole "channel", we delayed instrumentation. A subsequent PR #5206 updated the instrumentation point to ensure the wcf span was active while IDispatchMessageInspector were running.

This was somewhat complex, due to the convoluted and legacy way wcf uses async and threading. Basically, we use a weak table to hold the current span, and us the MessageRpc object as a key. Later on, we retrieve the scope and dispose it.

Implementation details

The missing part was that we were not "restoring" the wcf scope for when the actual Invoker implementations executed. The process was:

  • Update the tests and snapshots to:
    • Record all spans and traces (it makes it easier to understand the snapshots using)
    • Create a span inside the "service" calls.
      • These should have been children of the wcf server spans, but they were not. They were orphaned
  • Update the "Invoker" implementations to grab the wcf spans, make it active, and then deactivate it afterwards
  • Regenerate the snapshots, and confirm the custom spans are no longer orphaned 🎉

Additionally, do a small amount of refactoring:

  • "Fix" nullability in some places
  • Extract the "restore wcf span" functionality to WcfCommon as it's used in multiple places

Test coverage

Covered by existing, after the tweaks above. The snapshots change like this:

Before the fix, after adding the additional custom spans, WSHttpBinding traces:

image

After the fix, WSHttpBinding traces:

image

Before the fix, after adding the additional custom spans, WebHttp traces:

image

After the fix, Web Http traces

image

Unfortunately, this ends up being somewhat unstable in regards to sorting, so I did some more refactoring to separate the root span for each separate httpcall. This should make sure we have more stable ordering of the spans using the built-in sort order

The result is we get separate traces for each API call instead:

image

Other details

I wonder if we really need a weak table here? 🤔 seeing as we have an instrumentation point that explicitly disposes the span, shouldn't we just remove the entry at the same time?

@andrewlock andrewlock requested a review from a team as a code owner November 19, 2025 14:27
@andrewlock andrewlock added the area:automatic-instrumentation Automatic instrumentation managed C# code (Datadog.Trace.ClrProfiler.Managed) label Nov 19, 2025
@andrewlock andrewlock requested a review from a team as a code owner November 19, 2025 14:27
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github-actions bot commented Nov 19, 2025

Snapshots difference summary

The following differences have been observed in committed snapshots. It is meant to help the reviewer.
The diff is simplistic, so please check some files anyway while we improve it.

1 occurrences of :

-    Name: wcf.request,
-    Resource: /ServerSyncAddJson/?/n2=2,
+    Name: internal,
+    Resource: WebClient,
[...]
-    Type: web,
-    ParentId: Id_3,
+    Type: custom,
[...]
-      component: Wcf,
-      custom-tag: DispatchMessageInspector,
[...]
-      http.method: GET,
-      http.request.headers.host: localhost:00000,
-      http.url: http://localhost:00000/ServerSyncAddJson/1/n2=2,
[...]
-      runtime-id: Guid_1,
-      span.kind: server,
+      otel.library.name: Samples.Wcf,
+      otel.status_code: STATUS_CODE_UNSET,
+      otel.trace_id: Guid_1,
+      runtime-id: Guid_2,
+      span.kind: internal,

1 occurrences of :

+  {
+    TraceId: Id_1,
+    SpanId: Id_3,
+    Name: http.request,
+    Resource: GET localhost:00000/ServerSyncAddJson/?/n2=2,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: GET,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddJson/1/n2=2,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
[...]
+    Name: http.request,
+    Resource: GET localhost:00000/ServerSyncAddXml/?/n2=2,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: GET,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddXml/1/n2=2,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_5,
+    Name: http.request,
+    Resource: POST localhost:00000/ServerTaskAddPost,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerTaskAddPost,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_6,
+    Name: http.request,
+    Resource: POST localhost:00000/ServerSyncAddWrapped,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddWrapped,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_7,
[...]
-    Resource: /ServerSyncAddWrapped,
+    Resource: /ServerSyncAddJson/?/n2=2,
[...]
-    ParentId: Id_5,
+    ParentId: Id_3,
[...]
-      http.method: POST,
+      http.method: GET,
[...]
-      http.url: http://localhost:00000/ServerSyncAddWrapped,
+      http.url: http://localhost:00000/ServerSyncAddJson/1/n2=2,
[...]
-      runtime-id: Guid_1,
+      runtime-id: Guid_2,

2 occurrences of :

-    SpanId: Id_6,
+    SpanId: Id_8,
[...]
-    ParentId: Id_7,
+    ParentId: Id_4,

44 occurrences of :

-      runtime-id: Guid_1,
+      runtime-id: Guid_2,

2 occurrences of :

-    SpanId: Id_8,
+    SpanId: Id_9,
[...]
-    ParentId: Id_9,
+    ParentId: Id_5,

1 occurrences of :

-    Name: internal,
-    Resource: WebClient,
+    Name: wcf.request,
+    Resource: /ServerSyncAddWrapped,
[...]
-    Type: custom,
+    Type: web,
+    ParentId: Id_6,
[...]
+      component: Wcf,
+      custom-tag: DispatchMessageInspector,
[...]
+      http.method: POST,
+      http.request.headers.host: localhost:00000,
+      http.url: http://localhost:00000/ServerSyncAddWrapped,
[...]
-      otel.library.name: Samples.Wcf,
-      otel.status_code: STATUS_CODE_UNSET,
-      otel.trace_id: Guid_2,
-      runtime-id: Guid_1,
-      span.kind: internal,
+      runtime-id: Guid_2,
+      span.kind: server,

2 occurrences of :

+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_11,
+    Name: ServerSyncAddJson,
+    Resource: ServerSyncAddJson,
+    Service: Samples.Wcf,
+    ParentId: Id_7,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_12,
+    Name: ServerSyncAddXml,
+    Resource: ServerSyncAddXml,
+    Service: Samples.Wcf,
+    ParentId: Id_8,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_13,
+    Name: ServerTaskAddPost,
+    Resource: ServerTaskAddPost,
+    Service: Samples.Wcf,
+    ParentId: Id_9,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_14,
+    Name: ServerSyncAddWrapped,
+    Resource: ServerSyncAddWrapped,
+    Service: Samples.Wcf,
+    ParentId: Id_10,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }

1 occurrences of :

+    Name: internal,
+    Resource: WebClient,
+    Service: Samples.Wcf,
+    Type: custom,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      otel.library.name: Samples.Wcf,
+      otel.status_code: STATUS_CODE_UNSET,
+      otel.trace_id: Guid_1,
+      runtime-id: Guid_2,
+      span.kind: internal,
+      version: 1.0.0
+    },
+    Metrics: {
+      process_id: 0,
+      _dd.top_level: 1.0,
+      _dd.tracer_kr: 1.0,
+      _sampling_priority_v1: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_3,
+    Name: http.request,
+    Resource: GET localhost:00000/ServerSyncAddJson/?/n2=2,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: GET,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddJson/1/n2=2,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_4,
+    Name: http.request,
+    Resource: GET localhost:00000/ServerSyncAddXml/?/n2=2,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: GET,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddXml/1/n2=2,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_5,
+    Name: http.request,
+    Resource: POST localhost:00000/ServerTaskAddPost,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerTaskAddPost,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_6,
+    Name: http.request,
+    Resource: POST localhost:00000/ServerSyncAddWrapped,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddWrapped,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_7,

2 occurrences of :

-    SpanId: Id_4,
+    SpanId: Id_8,
[...]
-    ParentId: Id_5,
+    ParentId: Id_4,

2 occurrences of :

-    SpanId: Id_6,
+    SpanId: Id_9,
[...]
-    Resource: POST /ServerSyncAddWrapped,
+    Resource: POST /ServerTaskAddPost,
[...]
-    ParentId: Id_7,
+    ParentId: Id_5,
[...]
-      http.url: http://localhost:00000/ServerSyncAddWrapped,
+      http.url: http://localhost:00000/ServerTaskAddPost,
[...]
-      runtime-id: Guid_1,
+      runtime-id: Guid_2,

2 occurrences of :

-    SpanId: Id_8,
+    SpanId: Id_10,
[...]
-    Resource: POST /ServerTaskAddPost,
+    Resource: POST /ServerSyncAddWrapped,
[...]
-    ParentId: Id_9,
+    ParentId: Id_6,
[...]
-      http.url: http://localhost:00000/ServerTaskAddPost,
+      http.url: http://localhost:00000/ServerSyncAddWrapped,
[...]
-      runtime-id: Guid_1,
+      runtime-id: Guid_2,

2 occurrences of :

-    SpanId: Id_10,
-    Name: internal,
-    Resource: WebClient,
+    SpanId: Id_11,
+    Name: ServerSyncAddJson,
+    Resource: ServerSyncAddJson,
[...]
-    Type: custom,
+    ParentId: Id_7,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_12,
+    Name: ServerSyncAddXml,
+    Resource: ServerSyncAddXml,
+    Service: Samples.Wcf,
+    ParentId: Id_8,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_13,
+    Name: ServerTaskAddPost,
+    Resource: ServerTaskAddPost,
+    Service: Samples.Wcf,
+    ParentId: Id_9,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_14,
+    Name: ServerSyncAddWrapped,
+    Resource: ServerSyncAddWrapped,
+    Service: Samples.Wcf,
+    ParentId: Id_10,
[...]
-      otel.library.name: Samples.Wcf,
-      otel.status_code: STATUS_CODE_UNSET,
-      otel.trace_id: Guid_2,
-      runtime-id: Guid_1,
-      span.kind: internal,
[...]
-    },
-    Metrics: {
-      process_id: 0,
-      _dd.top_level: 1.0,
-      _dd.tracer_kr: 1.0,
-      _sampling_priority_v1: 1.0

1 occurrences of :

-    Name: http.server.request,
-    Resource: /ServerSyncAddJson/?/n2=2,
+    Name: internal,
+    Resource: WebClient,
[...]
-    Type: web,
-    ParentId: Id_3,
+    Type: custom,
[...]
-      component: Wcf,
-      custom-tag: DispatchMessageInspector,
[...]
-      http.method: GET,
-      http.request.headers.host: localhost:00000,
-      http.url: http://localhost:00000/ServerSyncAddJson/1/n2=2,
[...]
-      runtime-id: Guid_1,
-      span.kind: server,
+      otel.library.name: Samples.Wcf,
+      otel.status_code: STATUS_CODE_UNSET,
+      otel.trace_id: Guid_1,
+      runtime-id: Guid_2,
+      span.kind: internal,

1 occurrences of :

+  {
+    TraceId: Id_1,
+    SpanId: Id_3,
+    Name: http.client.request,
+    Resource: GET localhost:00000/ServerSyncAddJson/?/n2=2,
+    Service: Samples.Wcf,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: GET,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddJson/1/n2=2,
+      language: dotnet,
+      out.host: localhost,
+      peer.service: localhost,
+      span.kind: client,
+      version: 1.0.0,
+      _dd.peer.service.source: out.host
+    }
+  },
[...]
+    Name: http.client.request,
+    Resource: GET localhost:00000/ServerSyncAddXml/?/n2=2,
+    Service: Samples.Wcf,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: GET,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddXml/1/n2=2,
+      language: dotnet,
+      out.host: localhost,
+      peer.service: localhost,
+      span.kind: client,
+      version: 1.0.0,
+      _dd.peer.service.source: out.host
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_5,
+    Name: http.client.request,
+    Resource: POST localhost:00000/ServerTaskAddPost,
+    Service: Samples.Wcf,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerTaskAddPost,
+      language: dotnet,
+      out.host: localhost,
+      peer.service: localhost,
+      span.kind: client,
+      version: 1.0.0,
+      _dd.peer.service.source: out.host
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_6,
+    Name: http.client.request,
+    Resource: POST localhost:00000/ServerSyncAddWrapped,
+    Service: Samples.Wcf,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddWrapped,
+      language: dotnet,
+      out.host: localhost,
+      peer.service: localhost,
+      span.kind: client,
+      version: 1.0.0,
+      _dd.peer.service.source: out.host
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_7,
[...]
-    Resource: /ServerSyncAddWrapped,
+    Resource: /ServerSyncAddJson/?/n2=2,
[...]
-    ParentId: Id_5,
+    ParentId: Id_3,
[...]
-      http.method: POST,
+      http.method: GET,
[...]
-      http.url: http://localhost:00000/ServerSyncAddWrapped,
+      http.url: http://localhost:00000/ServerSyncAddJson/1/n2=2,
[...]
-      runtime-id: Guid_1,
+      runtime-id: Guid_2,

1 occurrences of :

-    Name: internal,
-    Resource: WebClient,
+    Name: http.server.request,
+    Resource: /ServerSyncAddWrapped,
[...]
-    Type: custom,
+    Type: web,
+    ParentId: Id_6,
[...]
+      component: Wcf,
+      custom-tag: DispatchMessageInspector,
[...]
+      http.method: POST,
+      http.request.headers.host: localhost:00000,
+      http.url: http://localhost:00000/ServerSyncAddWrapped,
[...]
-      otel.library.name: Samples.Wcf,
-      otel.status_code: STATUS_CODE_UNSET,
-      otel.trace_id: Guid_2,
-      runtime-id: Guid_1,
-      span.kind: internal,
+      runtime-id: Guid_2,
+      span.kind: server,

1 occurrences of :

+    Name: internal,
+    Resource: WebClient,
+    Service: Samples.Wcf,
+    Type: custom,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      otel.library.name: Samples.Wcf,
+      otel.status_code: STATUS_CODE_UNSET,
+      otel.trace_id: Guid_1,
+      runtime-id: Guid_2,
+      span.kind: internal,
+      version: 1.0.0
+    },
+    Metrics: {
+      process_id: 0,
+      _dd.top_level: 1.0,
+      _dd.tracer_kr: 1.0,
+      _sampling_priority_v1: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_3,
+    Name: http.client.request,
+    Resource: GET localhost:00000/ServerSyncAddJson/?/n2=2,
+    Service: Samples.Wcf,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: GET,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddJson/1/n2=2,
+      language: dotnet,
+      out.host: localhost,
+      peer.service: localhost,
+      span.kind: client,
+      version: 1.0.0,
+      _dd.peer.service.source: out.host
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_4,
+    Name: http.client.request,
+    Resource: GET localhost:00000/ServerSyncAddXml/?/n2=2,
+    Service: Samples.Wcf,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: GET,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerSyncAddXml/1/n2=2,
+      language: dotnet,
+      out.host: localhost,
+      peer.service: localhost,
+      span.kind: client,
+      version: 1.0.0,
+      _dd.peer.service.source: out.host
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_5,
+    Name: http.client.request,
+    Resource: POST localhost:00000/ServerTaskAddPost,
+    Service: Samples.Wcf,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/ServerTaskAddPost,
+      language: dotnet,
+      out.host: localhost,
+      peer.service: localhost,
+      span.kind: client,
+      version: 1.0.0,
+      _dd.peer.service.source: out.host
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_6,
+    Name: http.client.request,
+    Resource: POST localhost:00000/ServerSyncAddWrapped,
+    Service: Samples.Wcf,
+    Type: http,
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2 occurrences of :

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+    Service: Samples.Wcf-http-client,
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+  {
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+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_10,
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[...]
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+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
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+    Service: Samples.Wcf-http-client,
+    Type: http,
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+    Tags: {
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[...]
+      error.type: System.Net.WebException,
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+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

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[...]
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4 occurrences of :

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4 occurrences of :

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[...]
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4 occurrences of :

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[...]
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4 occurrences of :

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-    SpanId: Id_20,
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[...]
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

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+    Name: ServerEmptyActionAdd,
+    Resource: ServerEmptyActionAdd,
[...]
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+    Name: ServerSyncAdd,
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+    Service: Samples.Wcf,
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+    Name: ServerSyncAdd,
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+    Service: Samples.Wcf,
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+    Name: BeginServerAsyncAdd,
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+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
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+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_34,
+    Tags: {
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+  {
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+    SpanId: Id_48,
+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_34,
+    Tags: {
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+    SpanId: Id_49,
+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_35,
+    Tags: {
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+    SpanId: Id_50,
+    Name: BeginServerAsyncAdd,
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[...]
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[...]
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2 occurrences of :

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+    Type: custom,
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+      language: dotnet,
+      otel.library.name: Samples.Wcf,
+      otel.status_code: STATUS_CODE_UNSET,
+      otel.trace_id: Guid_1,
+      runtime-id: Guid_2,
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+      version: 1.0.0
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+    Metrics: {
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+      _dd.top_level: 1.0,
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+    SpanId: Id_3,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
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+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
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+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
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+  },
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+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
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+  },
+  {
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+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
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+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
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+    }
+  },
+  {
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+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
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+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
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+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_13,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_1,
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+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
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+      runtime-id: Guid_2,
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+      _dd.base_service: Samples.Wcf
+    },
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+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_2,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_2,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }

4 occurrences of :

+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    Tags: {
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+      language: dotnet,
+      runtime-id: Guid_1,
+      version: 1.0.0
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+    Metrics: {
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+      _dd.top_level: 1.0,
+      _dd.tracer_kr: 1.0,
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+    }
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+    SpanId: Id_4,
+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      runtime-id: Guid_1,
+      version: 1.0.0
+    },
+    Metrics: {
+      process_id: 0,
+      _dd.top_level: 1.0,
+      _dd.tracer_kr: 1.0,
+      _sampling_priority_v1: 1.0
+    }
+  },
+  {
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+    SpanId: Id_6,
+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    Tags: {
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+      language: dotnet,
+      runtime-id: Guid_1,
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+    Metrics: {
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+      _dd.top_level: 1.0,
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+  {
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+    SpanId: Id_8,
+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    Tags: {
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+      language: dotnet,
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+      version: 1.0.0
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+    Metrics: {
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4 occurrences of :

-      otel.trace_id: Guid_1,
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

-    TraceId: Id_1,
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[...]
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_8,
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[...]
-    ParentId: Id_2,
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[...]
-      runtime-id: Guid_2,
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4 occurrences of :

-    TraceId: Id_1,
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[...]
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[...]
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4 occurrences of :

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[...]
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[...]
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4 occurrences of :

-    TraceId: Id_1,
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[...]
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[...]
-      runtime-id: Guid_2,
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4 occurrences of :

-    TraceId: Id_1,
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[...]
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[...]
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4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_13,
+    TraceId: Id_9,
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[...]
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[...]
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4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_14,
+    TraceId: Id_9,
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[...]
-    ParentId: Id_2,
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[...]
-      runtime-id: Guid_2,
+      runtime-id: Guid_1,

4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_15,
+    TraceId: Id_9,
+    SpanId: Id_23,
[...]
-    ParentId: Id_2,
+    ParentId: Id_10,
[...]
-      runtime-id: Guid_2,
+      runtime-id: Guid_1,

4 occurrences of :

+  },
+  {
+    TraceId: Id_9,
+    SpanId: Id_24,
+    Name: ServerEmptyActionAdd,
+    Resource: ServerEmptyActionAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_11,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_9,
+    SpanId: Id_25,
+    Name: ServerSyncAdd,
+    Resource: ServerSyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_12,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_9,
+    SpanId: Id_26,
+    Name: ServerSyncAdd,
+    Resource: ServerSyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_13,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_9,
+    SpanId: Id_27,
+    Name: ServerSyncAdd,
+    Resource: ServerSyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_14,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_9,
+    SpanId: Id_28,
+    Name: ServerTaskAdd,
+    Resource: ServerTaskAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_15,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_9,
+    SpanId: Id_29,
+    Name: ServerTaskAdd,
+    Resource: ServerTaskAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_16,
+    Tags: {
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+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
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+    SpanId: Id_30,
+    Name: ServerTaskAdd,
+    Resource: ServerTaskAdd,
+    Service: Samples.Wcf,
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+    Tags: {
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+    }
+  },
+  {
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+    SpanId: Id_31,
+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
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+    Tags: {
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+    }
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+  {
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+  {
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+    Name: BeginServerAsyncAdd,
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+    Service: Samples.Wcf,
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+    }
+  },
+  {
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+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_21,
+    Tags: {
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+      version: 1.0.0
+    }
+  },
+  {
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+    SpanId: Id_36,
+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_22,
+    Tags: {
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+      version: 1.0.0
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+  },
+  {
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+    SpanId: Id_37,
+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_23,
+    Tags: {
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4 occurrences of :

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+  {
+    TraceId: Id_1,
+    SpanId: Id_16,
+    Name: ServerEmptyActionAdd,
+    Resource: ServerEmptyActionAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_3,
+    Tags: {
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+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
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+    SpanId: Id_17,
+    Name: ServerSyncAdd,
+    Resource: ServerSyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_4,
+    Tags: {
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+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
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+    SpanId: Id_18,
+    Name: ServerSyncAdd,
+    Resource: ServerSyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_5,
+    Tags: {
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+      language: dotnet,
+      version: 1.0.0
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+  },
+  {
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+    Service: Samples.Wcf,
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+    Name: ServerTaskAdd,
+    Resource: ServerTaskAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_7,
+    Tags: {
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+    Tags: {
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+    Name: ServerTaskAdd,
+    Resource: ServerTaskAdd,
+    Service: Samples.Wcf,
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+    Tags: {
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+  },
+  {
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+    SpanId: Id_23,
+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_10,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
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+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_24,
+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_10,
+    Tags: {
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+      language: dotnet,
+      version: 1.0.0
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+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_25,
+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_11,
+    Tags: {
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+      language: dotnet,
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+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_11,
+    Tags: {
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+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_1,
+    SpanId: Id_27,
+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_12,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
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+  },
+  {
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+    SpanId: Id_28,
+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_12,
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2 occurrences of :

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+      language: dotnet,
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+      language: dotnet,
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+      span.kind: client,
+      _dd.base_service: Samples.Wcf
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+      language: dotnet,
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+      runtime-id: Guid_1,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
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+    }
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+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
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+    }
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+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
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+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
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+      runtime-id: Guid_1,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
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+    }
+  },
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+    TraceId: Id_3,
+    SpanId: Id_10,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
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+      _dd.base_service: Samples.Wcf
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+    }
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+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
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+    },
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+    TraceId: Id_3,
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+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
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+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
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+    }
+  },
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+    TraceId: Id_3,
+    SpanId: Id_13,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_4,
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+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_1,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_14,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_4,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_1,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_15,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_4,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_1,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_16,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_4,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_1,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_17,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_4,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_1,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_18,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_4,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_1,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_19,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_4,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
+      http.method: POST,
+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_1,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_20,
+    Name: http.request,
+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf-http-client,
+    Type: http,
+    ParentId: Id_4,
+    Tags: {
+      component: WebRequest,
+      env: integration_tests,
+      http.method: POST,
+      http.status_code: 200,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      out.host: localhost,
+      runtime-id: Guid_1,
+      span.kind: client,
+      _dd.base_service: Samples.Wcf
+    },
+    Metrics: {
+      _dd.top_level: 1.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_21,
+    Name: wcf.request,
+    Resource: http://schemas.xmlsoap.org/ws/2005/02/trust/RST/Issue,
+    Service: Samples.Wcf,
+    Type: web,
+    ParentId: Id_5,
+    Tags: {
+      component: Wcf,
+      env: integration_tests,
+      http.method: POST,
+      http.request.headers.host: localhost:00000,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      runtime-id: Guid_1,
+      span.kind: server,
+      version: 1.0.0
+    },
+    Metrics: {
+      process_id: 0,
+      _dd.top_level: 1.0,
+      _dd.tracer_kr: 1.0,
+      _sampling_priority_v1: 1.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_22,
+    Name: wcf.request,
+    Resource: http://schemas.xmlsoap.org/ws/2005/02/trust/RSTR/Issue,
+    Service: Samples.Wcf,
+    Type: web,
+    ParentId: Id_6,
+    Tags: {
+      component: Wcf,
+      env: integration_tests,
+      http.method: POST,
+      http.request.headers.host: localhost:00000,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
+      language: dotnet,
+      runtime-id: Guid_1,
+      span.kind: server,
+      version: 1.0.0
+    },
+    Metrics: {
+      process_id: 0,
+      _dd.top_level: 1.0,
+      _dd.tracer_kr: 1.0,
+      _sampling_priority_v1: 1.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_23,
[...]
-    Resource: /WcfSample/123,123/CalculatorService,
+    Resource: http://schemas.xmlsoap.org/ws/2005/02/trust/RST/SCT,
[...]
-    ParentId: Id_3,
+    ParentId: Id_7,
[...]
-      custom-tag: DispatchMessageInspector,

1 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_4,
+    TraceId: Id_3,
+    SpanId: Id_24,
[...]
-    Resource: WcfSample/ICalculator/ServerAsyncAdd,
+    Resource: /WcfSample/123,123/CalculatorService,
[...]
-    ParentId: Id_5,
+    ParentId: Id_8,

2 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_6,
+    TraceId: Id_3,
+    SpanId: Id_25,
[...]
-    Resource: WcfSample/ICalculator/ServerAsyncAdd,
+    Resource: WcfSample/ICalculator/ServerSyncAdd,
[...]
-    ParentId: Id_7,
+    ParentId: Id_9,

2 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_8,
+    TraceId: Id_3,
+    SpanId: Id_26,
[...]
-    Resource: WcfSample/ICalculator/ServerAsyncAdd,
+    Resource: WcfSample/ICalculator/ServerSyncAdd,
[...]
-    ParentId: Id_9,
-    Error: 1,
+    ParentId: Id_10,
[...]
-      error.msg: Something happened,
-      error.stack:
[...]
-      error.type: System.ServiceModel.FaultException,

2 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_10,
+    TraceId: Id_3,
+    SpanId: Id_27,
[...]
-    Resource: WcfSample/ICalculator/ServerAsyncAdd,
+    Resource: WcfSample/ICalculator/ServerSyncAdd,

4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_12,
+    TraceId: Id_3,
+    SpanId: Id_28,
[...]
-    Resource: WcfSample/ICalculator/ServerAsyncAdd,
+    Resource: WcfSample/ICalculator/ServerTaskAdd,
[...]
-    ParentId: Id_13,
-    Error: 1,
+    ParentId: Id_12,
[...]
-      error.msg: Something happened,
-      error.stack:
[...]
-      error.type: System.ServiceModel.FaultException,

4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_14,
+    TraceId: Id_3,
+    SpanId: Id_29,
[...]
-    Resource: WcfSample/ICalculator/ServerAsyncAdd,
+    Resource: WcfSample/ICalculator/ServerTaskAdd,
[...]
-    ParentId: Id_15,
+    ParentId: Id_13,

4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_16,
+    TraceId: Id_3,
+    SpanId: Id_30,
[...]
-    Resource: WcfSample/ICalculator/ServerSyncAdd,
+    Resource: WcfSample/ICalculator/ServerTaskAdd,
[...]
-    ParentId: Id_17,
+    ParentId: Id_14,

4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_18,
+    TraceId: Id_3,
+    SpanId: Id_31,
[...]
-    Resource: WcfSample/ICalculator/ServerSyncAdd,
+    Resource: WcfSample/ICalculator/ServerAsyncAdd,
[...]
-    ParentId: Id_19,
+    ParentId: Id_15,

4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_20,
+    TraceId: Id_3,
+    SpanId: Id_32,
[...]
-    Resource: WcfSample/ICalculator/ServerSyncAdd,
+    Resource: WcfSample/ICalculator/ServerAsyncAdd,
[...]
-    ParentId: Id_21,
+    ParentId: Id_16,

4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_22,
+    TraceId: Id_3,
+    SpanId: Id_33,
[...]
-    Resource: WcfSample/ICalculator/ServerTaskAdd,
+    Resource: WcfSample/ICalculator/ServerAsyncAdd,
[...]
-    ParentId: Id_23,
+    ParentId: Id_17,
+    Error: 1,
[...]
+      error.msg: Something happened,
+      error.stack:
[...]
+      error.type: System.ServiceModel.FaultException,

4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_24,
+    TraceId: Id_3,
+    SpanId: Id_34,
[...]
-    Resource: WcfSample/ICalculator/ServerTaskAdd,
+    Resource: WcfSample/ICalculator/ServerAsyncAdd,
[...]
-    ParentId: Id_25,
+    ParentId: Id_18,

4 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_26,
+    TraceId: Id_3,
+    SpanId: Id_35,
[...]
-    Resource: WcfSample/ICalculator/ServerTaskAdd,
+    Resource: WcfSample/ICalculator/ServerAsyncAdd,
[...]
-    ParentId: Id_27,
+    ParentId: Id_19,
+    Error: 1,
[...]
+      error.msg: Something happened,
+      error.stack:
[...]
+      error.type: System.ServiceModel.FaultException,

2 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_28,
-    Name: internal,
-    Resource: WebClient,
+    TraceId: Id_3,
+    SpanId: Id_36,
+    Name: wcf.request,
+    Resource: WcfSample/ICalculator/ServerAsyncAdd,
[...]
-    Type: custom,
+    Type: web,
+    ParentId: Id_20,
[...]
+      component: Wcf,
+      custom-tag: DispatchMessageInspector,
[...]
+      http.method: POST,
+      http.request.headers.host: localhost:00000,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
[...]
-      otel.library.name: Samples.Wcf,
-      otel.status_code: STATUS_CODE_UNSET,
-      otel.trace_id: Guid_2,
[...]
-      span.kind: internal,
+      span.kind: server,

4 occurrences of :

+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_37,
+    Name: ServerEmptyActionAdd,
+    Resource: ServerEmptyActionAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_24,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_38,
+    Name: ServerSyncAdd,
+    Resource: ServerSyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_25,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_39,
+    Name: ServerSyncAdd,
+    Resource: ServerSyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_26,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_40,
+    Name: ServerSyncAdd,
+    Resource: ServerSyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_27,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_41,
+    Name: ServerTaskAdd,
+    Resource: ServerTaskAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_28,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_42,
+    Name: ServerTaskAdd,
+    Resource: ServerTaskAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_29,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_43,
+    Name: ServerTaskAdd,
+    Resource: ServerTaskAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_30,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_44,
+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_31,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_45,
+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_31,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_46,
+    Name: BeginServerAsyncAdd,
+    Resource: BeginServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_32,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_47,
+    Name: EndServerAsyncAdd,
+    Resource: EndServerAsyncAdd,
+    Service: Samples.Wcf,
+    ParentId: Id_32,
+    Tags: {
+      env: integration_tests,
+      language: dotnet,
+      version: 1.0.0
+    }
+  },
+  {
+    TraceId: Id_3,
+    SpanId: Id_48,
+    Name: BeginServerAsyncAdd,
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[...]
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[...]
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2 occurrences of :

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1 occurrences of :

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+    SpanId: Id_16,
+    Name: http.client.request,
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+    Service: Samples.Wcf,
+    Type: http,
+    ParentId: Id_4,
+    Tags: {
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+      env: integration_tests,
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+    Resource: POST localhost:00000/WcfSample/?/CalculatorService,
+    Service: Samples.Wcf,
+    Type: http,
+    ParentId: Id_4,
+    Tags: {
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+      error.msg: The remote server returned an error: (500) Internal Server Error.,
+      error.stack:
[...]
+      error.type: System.Net.WebException,
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+      http.status_code: 500,
+      http.url: http://localhost:00000/WcfSample/123,123/CalculatorService,
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+    Service: Samples.Wcf,
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+    Tags: {
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[...]
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[...]
-    ParentId: Id_3,
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[...]
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2 occurrences of :

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[...]
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1 occurrences of :

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[...]
-    Resource: WcfSample/ICalculator/ServerAsyncAdd,
+    Resource: http://schemas.xmlsoap.org/ws/2005/02/trust/RST/SCT,
[...]
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2 occurrences of :

-    TraceId: Id_1,
-    SpanId: Id_8,
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[...]
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[...]
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[...]
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2 occurrences of :

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[...]
-    Resource: WcfSample/ICalculator/ServerAsyncAdd,
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2 occurrences of :

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-    SpanId: Id_28,
-    Name: internal,
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[...]
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[...]
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1 occurrences of :

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[...]
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1 occurrences of :

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pr-commenter bot commented Nov 19, 2025 •
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Benchmarks

Benchmarks Report for benchmark platform 🐌

Benchmarks for #7842 compared to master:

  • 2 benchmarks are faster, with geometric mean 2.240
  • 1 benchmarks are slower, with geometric mean 1.171
  • 10 benchmarks have fewer allocations
  • 4 benchmarks have more allocations

The following thresholds were used for comparing the benchmark speeds:

  • Mann–Whitney U test with statistical test for significance of 5%
  • Only results indicating a difference greater than 10% and 0.3 ns are considered.

Allocation changes below 0.5% are ignored.

Benchmark details

Benchmarks.Trace.ActivityBenchmark - Same speed ✔️ More allocations ⚠️

More allocations ⚠️ in #7842

Benchmark Base Allocated Diff Allocated Change Change %
Benchmarks.Trace.ActivityBenchmark.StartStopWithChild‑net6.0 5.49 KB 5.53 KB 36 B 0.66%

Fewer allocations 🎉 in #7842

Benchmark Base Allocated Diff Allocated Change Change %
Benchmarks.Trace.ActivityBenchmark.StartStopWithChild‑net472 6.07 KB 6.04 KB -32 B -0.53%

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master StartStopWithChild net6.0 10.5μs 59.4ns 389ns 0 0 0 5.49 KB
master StartStopWithChild netcoreapp3.1 14.2μs 22.5ns 87ns 0 0 0 5.73 KB
master StartStopWithChild net472 22μs 117ns 631ns 0.975 0.325 0.108 6.07 KB
#7842 StartStopWithChild net6.0 10.3μs 56.9ns 351ns 0 0 0 5.53 KB
#7842 StartStopWithChild netcoreapp3.1 13.5μs 67.4ns 294ns 0 0 0 5.71 KB
#7842 StartStopWithChild net472 21.9μs 120ns 751ns 1.01 0.335 0.112 6.04 KB
Benchmarks.Trace.AgentWriterBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master WriteAndFlushEnrichedTraces net6.0 929μs 289ns 1.12μs 0 0 0 2.71 KB
master WriteAndFlushEnrichedTraces netcoreapp3.1 1.02ms 207ns 745ns 0 0 0 2.7 KB
master WriteAndFlushEnrichedTraces net472 1.21ms 595ns 2.14μs 0 0 0 3.31 KB
#7842 WriteAndFlushEnrichedTraces net6.0 923μs 261ns 1.01μs 0 0 0 2.7 KB
#7842 WriteAndFlushEnrichedTraces netcoreapp3.1 1.03ms 453ns 1.75μs 0 0 0 2.7 KB
#7842 WriteAndFlushEnrichedTraces net472 1.21ms 890ns 3.33μs 0 0 0 3.31 KB
Benchmarks.Trace.Asm.AppSecBodyBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master AllCycleSimpleBody net6.0 1.05μs 6.56ns 65.6ns 0 0 0 1.22 KB
master AllCycleSimpleBody netcoreapp3.1 1.38μs 6.9ns 30.1ns 0 0 0 1.2 KB
master AllCycleSimpleBody net472 1.04μs 2.14ns 8.28ns 0.191 0 0 1.23 KB
master AllCycleMoreComplexBody net6.0 6.99μs 33.2ns 128ns 0 0 0 4.72 KB
master AllCycleMoreComplexBody netcoreapp3.1 8.91μs 41.6ns 166ns 0 0 0 4.62 KB
master AllCycleMoreComplexBody net472 7.77μs 5.49ns 21.3ns 0.739 0 0 4.74 KB
master ObjectExtractorSimpleBody net6.0 319ns 1.02ns 3.95ns 0 0 0 280 B
master ObjectExtractorSimpleBody netcoreapp3.1 392ns 2.15ns 13.1ns 0 0 0 272 B
master ObjectExtractorSimpleBody net472 294ns 0.0156ns 0.0604ns 0.0436 0 0 281 B
master ObjectExtractorMoreComplexBody net6.0 6.23μs 31.1ns 132ns 0 0 0 3.78 KB
master ObjectExtractorMoreComplexBody netcoreapp3.1 7.8μs 38.3ns 171ns 0 0 0 3.69 KB
master ObjectExtractorMoreComplexBody net472 6.71μs 2.88ns 11.2ns 0.603 0 0 3.8 KB
#7842 AllCycleSimpleBody net6.0 1.1μs 0.866ns 3.12ns 0 0 0 1.22 KB
#7842 AllCycleSimpleBody netcoreapp3.1 1.48μs 7.36ns 32.1ns 0 0 0 1.2 KB
#7842 AllCycleSimpleBody net472 1.04μs 0.629ns 2.44ns 0.192 0 0 1.23 KB
#7842 AllCycleMoreComplexBody net6.0 7.08μs 29ns 112ns 0 0 0 4.72 KB
#7842 AllCycleMoreComplexBody netcoreapp3.1 8.95μs 44.9ns 191ns 0 0 0 4.62 KB
#7842 AllCycleMoreComplexBody net472 7.65μs 2.95ns 11.4ns 0.727 0 0 4.74 KB
#7842 ObjectExtractorSimpleBody net6.0 315ns 1.76ns 11.6ns 0 0 0 280 B
#7842 ObjectExtractorSimpleBody netcoreapp3.1 393ns 2.24ns 14.4ns 0 0 0 272 B
#7842 ObjectExtractorSimpleBody net472 298ns 0.0609ns 0.236ns 0.0436 0 0 281 B
#7842 ObjectExtractorMoreComplexBody net6.0 6.31μs 3.8ns 14.7ns 0 0 0 3.78 KB
#7842 ObjectExtractorMoreComplexBody netcoreapp3.1 7.95μs 21.6ns 80.8ns 0 0 0 3.69 KB
#7842 ObjectExtractorMoreComplexBody net472 6.72μs 4.52ns 17.5ns 0.603 0 0 3.8 KB
Benchmarks.Trace.Asm.AppSecEncoderBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master EncodeArgs net6.0 76.4μs 25.8ns 100ns 0 0 0 32.4 KB
master EncodeArgs netcoreapp3.1 95.9μs 274ns 1.06μs 0 0 0 32.4 KB
master EncodeArgs net472 111μs 10.6ns 39.5ns 4.98 0 0 32.51 KB
master EncodeLegacyArgs net6.0 146μs 259ns 1μs 0 0 0 2.14 KB
master EncodeLegacyArgs netcoreapp3.1 202μs 300ns 1.12μs 0 0 0 2.14 KB
master EncodeLegacyArgs net472 264μs 116ns 432ns 0 0 0 2.16 KB
#7842 EncodeArgs net6.0 77.7μs 305ns 1.18μs 0 0 0 32.4 KB
#7842 EncodeArgs netcoreapp3.1 97.6μs 296ns 1.15μs 0 0 0 32.4 KB
#7842 EncodeArgs net472 110μs 69.5ns 269ns 4.93 0 0 32.5 KB
#7842 EncodeLegacyArgs net6.0 146μs 43.7ns 169ns 0 0 0 2.15 KB
#7842 EncodeLegacyArgs netcoreapp3.1 199μs 156ns 604ns 0 0 0 2.14 KB
#7842 EncodeLegacyArgs net472 269μs 108ns 418ns 0 0 0 2.16 KB
Benchmarks.Trace.Asm.AppSecWafBenchmark - Faster 🎉 Same allocations ✔️

Faster 🎉 in #7842

Benchmark base/diff Base Median (ns) Diff Median (ns) Modality
Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmarkWithAttack‑netcoreapp3.1 2.407 717,017.04 297,847.33
Benchmarks.Trace.Asm.AppSecWafBenchmark.RunWafRealisticBenchmark‑netcoreapp3.1 2.084 857,309.27 411,368.96

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master RunWafRealisticBenchmark net6.0 393μs 76.2ns 295ns 0 0 0 4.55 KB
master RunWafRealisticBenchmark netcoreapp3.1 818μs 9.43μs 93.8μs 0 0 0 4.48 KB
master RunWafRealisticBenchmark net472 433μs 27.3ns 106ns 0 0 0 4.68 KB
master RunWafRealisticBenchmarkWithAttack net6.0 293μs 35.3ns 137ns 0 0 0 2.24 KB
master RunWafRealisticBenchmarkWithAttack netcoreapp3.1 663μs 14.3μs 139μs 0 0 0 2.22 KB
master RunWafRealisticBenchmarkWithAttack net472 311μs 27.5ns 99.2ns 0 0 0 2.29 KB
#7842 RunWafRealisticBenchmark net6.0 393μs 45.5ns 176ns 0 0 0 4.55 KB
#7842 RunWafRealisticBenchmark netcoreapp3.1 412μs 292ns 1.05μs 0 0 0 4.48 KB
#7842 RunWafRealisticBenchmark net472 434μs 78.6ns 305ns 0 0 0 4.66 KB
#7842 RunWafRealisticBenchmarkWithAttack net6.0 283μs 17.9ns 67ns 0 0 0 2.24 KB
#7842 RunWafRealisticBenchmarkWithAttack netcoreapp3.1 298μs 267ns 1.03μs 0 0 0 2.22 KB
#7842 RunWafRealisticBenchmarkWithAttack net472 308μs 27.2ns 102ns 0 0 0 2.29 KB
Benchmarks.Trace.AspNetCoreBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master SendRequest net6.0 61.2μs 227ns 818ns 0 0 0 14.52 KB
master SendRequest netcoreapp3.1 71.3μs 287ns 1.03μs 0 0 0 17.42 KB
master SendRequest net472 0.00597ns 0.00149ns 0.00578ns 0 0 0 0 b
#7842 SendRequest net6.0 60.9μs 66.3ns 257ns 0 0 0 14.52 KB
#7842 SendRequest netcoreapp3.1 71.1μs 121ns 435ns 0 0 0 17.42 KB
#7842 SendRequest net472 0.00279ns 0.00102ns 0.00394ns 0 0 0 0 b
Benchmarks.Trace.CharSliceBenchmark - Same speed ✔️ More allocations ⚠️

More allocations ⚠️ in #7842

Benchmark Base Allocated Diff Allocated Change Change %
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool‑netcoreapp3.1 0 b 1 B 1 B ∞
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool‑net6.0 2 B 5 B 3 B 150.00%

Fewer allocations 🎉 in #7842

Benchmark Base Allocated Diff Allocated Change Change %
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice‑net6.0 6 B 5 B -1 B -16.67%
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSlice‑net472 73 B 0 b -73 B -100.00%
Benchmarks.Trace.CharSliceBenchmark.OptimizedCharSliceWithPool‑net472 47 B 0 b -47 B -100.00%

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master OriginalCharSlice net6.0 1.92ms 694ns 2.69μs 0 0 0 640.01 KB
master OriginalCharSlice netcoreapp3.1 2.19ms 2.95μs 11.4μs 0 0 0 640 KB
master OriginalCharSlice net472 2.67ms 160ns 599ns 100 0 0 641.95 KB
master OptimizedCharSlice net6.0 1.42ms 127ns 493ns 0 0 0 6 B
master OptimizedCharSlice netcoreapp3.1 1.66ms 463ns 1.67μs 0 0 0 1 B
master OptimizedCharSlice net472 1.99ms 303ns 1.17μs 0 0 0 73 B
master OptimizedCharSliceWithPool net6.0 811μs 21.8ns 81.7ns 0 0 0 2 B
master OptimizedCharSliceWithPool netcoreapp3.1 828μs 141ns 526ns 0 0 0 0 b
master OptimizedCharSliceWithPool net472 1.18ms 107ns 402ns 0 0 0 47 B
#7842 OriginalCharSlice net6.0 1.89ms 228ns 883ns 0 0 0 640.01 KB
#7842 OriginalCharSlice netcoreapp3.1 2.15ms 3.95μs 13.7μs 0 0 0 640 KB
#7842 OriginalCharSlice net472 2.67ms 149ns 539ns 100 0 0 641.95 KB
#7842 OptimizedCharSlice net6.0 1.34ms 206ns 797ns 0 0 0 5 B
#7842 OptimizedCharSlice netcoreapp3.1 1.7ms 495ns 1.92μs 0 0 0 1 B
#7842 OptimizedCharSlice net472 1.97ms 466ns 1.81μs 0 0 0 0 b
#7842 OptimizedCharSliceWithPool net6.0 820μs 39.4ns 152ns 0 0 0 5 B
#7842 OptimizedCharSliceWithPool netcoreapp3.1 896μs 53.5ns 207ns 0 0 0 1 B
#7842 OptimizedCharSliceWithPool net472 1.14ms 95.3ns 369ns 0 0 0 0 b
Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark - Slower ⚠️ More allocations ⚠️

Slower ⚠️ in #7842

Benchmark diff/base Base Median (ns) Diff Median (ns) Modality
Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces‑net6.0 1.171 660,030.43 772,906.25

More allocations ⚠️ in #7842

Benchmark Base Allocated Diff Allocated Change Change %
Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces‑netcoreapp3.1 41.87 KB 42.8 KB 926 B 2.21%

Fewer allocations 🎉 in #7842

Benchmark Base Allocated Diff Allocated Change Change %
Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark.WriteAndFlushEnrichedTraces‑net472 56.72 KB 56.03 KB -692 B -1.22%

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master WriteAndFlushEnrichedTraces net6.0 661μs 898ns 3.24μs 0 0 0 41.8 KB
master WriteAndFlushEnrichedTraces netcoreapp3.1 648μs 1.96μs 7.83μs 0 0 0 41.87 KB
master WriteAndFlushEnrichedTraces net472 898μs 3.64μs 14.1μs 8.93 0 0 56.72 KB
#7842 WriteAndFlushEnrichedTraces net6.0 783μs 3.46μs 13.4μs 0 0 0 41.66 KB
#7842 WriteAndFlushEnrichedTraces netcoreapp3.1 723μs 2.11μs 7.91μs 0 0 0 42.8 KB
#7842 WriteAndFlushEnrichedTraces net472 865μs 3.1μs 12μs 4.46 0 0 56.03 KB
Benchmarks.Trace.DbCommandBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master ExecuteNonQuery net6.0 1.95μs 6.61ns 25.6ns 0 0 0 1.02 KB
master ExecuteNonQuery netcoreapp3.1 2.6μs 7.66ns 28.7ns 0 0 0 1.02 KB
master ExecuteNonQuery net472 2.82μs 4.36ns 16.9ns 0.154 0.014 0 987 B
#7842 ExecuteNonQuery net6.0 1.89μs 8.67ns 31.2ns 0 0 0 1.02 KB
#7842 ExecuteNonQuery netcoreapp3.1 2.59μs 7.39ns 28.6ns 0 0 0 1.02 KB
#7842 ExecuteNonQuery net472 2.99μs 15.1ns 67.4ns 0.145 0.0145 0 987 B
Benchmarks.Trace.ElasticsearchBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master CallElasticsearch net6.0 1.72μs 4.62ns 17.9ns 0 0 0 1.03 KB
master CallElasticsearch netcoreapp3.1 2.23μs 10ns 38.8ns 0 0 0 1.03 KB
master CallElasticsearch net472 3.52μs 2.05ns 7.93ns 0.159 0 0 1.04 KB
master CallElasticsearchAsync net6.0 1.78μs 8.4ns 32.5ns 0 0 0 1.01 KB
master CallElasticsearchAsync netcoreapp3.1 2.38μs 8.57ns 30.9ns 0 0 0 1.08 KB
master CallElasticsearchAsync net472 3.7μs 1.96ns 7.6ns 0.167 0 0 1.1 KB
#7842 CallElasticsearch net6.0 1.74μs 7.2ns 27.9ns 0 0 0 1.03 KB
#7842 CallElasticsearch netcoreapp3.1 2.28μs 10.3ns 40ns 0 0 0 1.03 KB
#7842 CallElasticsearch net472 3.46μs 3.37ns 13ns 0.156 0 0 1.04 KB
#7842 CallElasticsearchAsync net6.0 1.83μs 7.42ns 28.7ns 0 0 0 1.01 KB
#7842 CallElasticsearchAsync netcoreapp3.1 2.46μs 5.93ns 23ns 0 0 0 1.08 KB
#7842 CallElasticsearchAsync net472 3.72μs 3.35ns 13ns 0.168 0 0 1.1 KB
Benchmarks.Trace.GraphQLBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master ExecuteAsync net6.0 1.91μs 9.59ns 42.9ns 0 0 0 952 B
master ExecuteAsync netcoreapp3.1 2.45μs 6.68ns 25.9ns 0 0 0 952 B
master ExecuteAsync net472 2.57μs 2.29ns 8.88ns 0.14 0 0 915 B
#7842 ExecuteAsync net6.0 1.89μs 0.709ns 2.56ns 0 0 0 952 B
#7842 ExecuteAsync netcoreapp3.1 2.45μs 9.52ns 36.9ns 0 0 0 952 B
#7842 ExecuteAsync net472 2.59μs 1.71ns 6.6ns 0.143 0 0 915 B
Benchmarks.Trace.HttpClientBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master SendAsync net6.0 6.9μs 2.8ns 10.8ns 0 0 0 2.36 KB
master SendAsync netcoreapp3.1 8.59μs 22.5ns 87ns 0 0 0 2.9 KB
master SendAsync net472 12.1μs 10.1ns 39ns 0.483 0 0 3.18 KB
#7842 SendAsync net6.0 6.82μs 16.4ns 61.3ns 0 0 0 2.36 KB
#7842 SendAsync netcoreapp3.1 8.84μs 27.3ns 106ns 0 0 0 2.9 KB
#7842 SendAsync net472 12.2μs 9.57ns 37.1ns 0.488 0 0 3.18 KB
Benchmarks.Trace.Iast.StringAspectsBenchmark - Same speed ✔️ Fewer allocations 🎉

Fewer allocations 🎉 in #7842

Benchmark Base Allocated Diff Allocated Change Change %
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatBenchmark‑net6.0 43.78 KB 43.48 KB -296 B -0.68%
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatAspectBenchmark‑net472 286.72 KB 279.21 KB -7.51 KB -2.62%
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatAspectBenchmark‑netcoreapp3.1 275.55 KB 259.18 KB -16.38 KB -5.94%
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatAspectBenchmark‑net6.0 278.85 KB 259.05 KB -19.8 KB -7.10%
Benchmarks.Trace.Iast.StringAspectsBenchmark.StringConcatBenchmark‑net472 65.54 KB 57.34 KB -8.19 KB -12.50%

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master StringConcatBenchmark net6.0 47.2μs 231ns 1.18μs 0 0 0 43.78 KB
master StringConcatBenchmark netcoreapp3.1 48.5μs 278ns 1.88μs 0 0 0 42.8 KB
master StringConcatBenchmark net472 57.5μs 74.7ns 259ns 0 0 0 65.54 KB
master StringConcatAspectBenchmark net6.0 507μs 2.02μs 8.32μs 0 0 0 278.85 KB
master StringConcatAspectBenchmark netcoreapp3.1 513μs 2.21μs 8.25μs 0 0 0 275.55 KB
master StringConcatAspectBenchmark net472 413μs 2.23μs 12μs 0 0 0 286.72 KB
#7842 StringConcatBenchmark net6.0 44.8μs 252ns 1.55μs 0 0 0 43.48 KB
#7842 StringConcatBenchmark netcoreapp3.1 49.7μs 287ns 2.27μs 0 0 0 42.64 KB
#7842 StringConcatBenchmark net472 57.2μs 192ns 719ns 0 0 0 57.34 KB
#7842 StringConcatAspectBenchmark net6.0 466μs 2.06μs 7.42μs 0 0 0 259.05 KB
#7842 StringConcatAspectBenchmark netcoreapp3.1 502μs 1.01μs 3.78μs 0 0 0 259.18 KB
#7842 StringConcatAspectBenchmark net472 416μs 2.3μs 16.7μs 0 0 0 279.21 KB
Benchmarks.Trace.ILoggerBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master EnrichedLog net6.0 2.59μs 13.6ns 71.9ns 0 0 0 1.7 KB
master EnrichedLog netcoreapp3.1 3.62μs 3.05ns 11.8ns 0 0 0 1.7 KB
master EnrichedLog net472 3.95μs 4.39ns 17ns 0.256 0 0 1.64 KB
#7842 EnrichedLog net6.0 2.68μs 12.5ns 50.1ns 0 0 0 1.7 KB
#7842 EnrichedLog netcoreapp3.1 3.6μs 16.6ns 64.3ns 0 0 0 1.7 KB
#7842 EnrichedLog net472 3.87μs 6.16ns 23.9ns 0.253 0 0 1.64 KB
Benchmarks.Trace.Log4netBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master EnrichedLog net6.0 121μs 79.7ns 276ns 0 0 0 4.31 KB
master EnrichedLog netcoreapp3.1 128μs 205ns 769ns 0 0 0 4.31 KB
master EnrichedLog net472 167μs 26.5ns 103ns 0 0 0 4.52 KB
#7842 EnrichedLog net6.0 123μs 102ns 366ns 0 0 0 4.31 KB
#7842 EnrichedLog netcoreapp3.1 128μs 302ns 1.09μs 0 0 0 4.31 KB
#7842 EnrichedLog net472 167μs 80.8ns 302ns 0 0 0 4.52 KB
Benchmarks.Trace.NLogBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master EnrichedLog net6.0 5.23μs 15.4ns 59.7ns 0 0 0 2.26 KB
master EnrichedLog netcoreapp3.1 6.73μs 16.2ns 62.7ns 0 0 0 2.26 KB
master EnrichedLog net472 7.76μs 8.15ns 31.6ns 0.308 0 0 2.08 KB
#7842 EnrichedLog net6.0 5.03μs 22.7ns 87.8ns 0 0 0 2.26 KB
#7842 EnrichedLog netcoreapp3.1 6.85μs 11.2ns 43.5ns 0 0 0 2.26 KB
#7842 EnrichedLog net472 7.52μs 5.12ns 19.2ns 0.299 0 0 2.08 KB
Benchmarks.Trace.RedisBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master SendReceive net6.0 2.05μs 10.4ns 47.5ns 0 0 0 1.2 KB
master SendReceive netcoreapp3.1 2.6μs 13.5ns 61.8ns 0 0 0 1.2 KB
master SendReceive net472 3.06μs 4.45ns 17.2ns 0.183 0 0 1.2 KB
#7842 SendReceive net6.0 1.99μs 0.916ns 3.55ns 0 0 0 1.2 KB
#7842 SendReceive netcoreapp3.1 2.63μs 13.4ns 61.5ns 0 0 0 1.2 KB
#7842 SendReceive net472 3.02μs 5.57ns 20.9ns 0.182 0 0 1.2 KB
Benchmarks.Trace.SerilogBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master EnrichedLog net6.0 4.26μs 6.02ns 23.3ns 0 0 0 1.58 KB
master EnrichedLog netcoreapp3.1 5.62μs 14.6ns 56.6ns 0 0 0 1.63 KB
master EnrichedLog net472 6.4μs 8.21ns 30.7ns 0.32 0 0 2.03 KB
#7842 EnrichedLog net6.0 4.27μs 1.41ns 5.07ns 0 0 0 1.58 KB
#7842 EnrichedLog netcoreapp3.1 5.67μs 18.1ns 70.2ns 0 0 0 1.63 KB
#7842 EnrichedLog net472 6.41μs 8.01ns 31ns 0.318 0 0 2.03 KB
Benchmarks.Trace.SpanBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master StartFinishSpan net6.0 780ns 0.642ns 2.4ns 0 0 0 576 B
master StartFinishSpan netcoreapp3.1 987ns 5.13ns 24.1ns 0 0 0 576 B
master StartFinishSpan net472 952ns 0.176ns 0.66ns 0.0907 0 0 578 B
master StartFinishScope net6.0 905ns 4.73ns 23.2ns 0 0 0 696 B
master StartFinishScope netcoreapp3.1 1.22μs 5.67ns 22ns 0 0 0 696 B
master StartFinishScope net472 1.12μs 0.124ns 0.462ns 0.101 0 0 658 B
#7842 StartFinishSpan net6.0 770ns 0.235ns 0.908ns 0 0 0 576 B
#7842 StartFinishSpan netcoreapp3.1 959ns 4.97ns 24.8ns 0 0 0 576 B
#7842 StartFinishSpan net472 949ns 0.169ns 0.633ns 0.0902 0 0 578 B
#7842 StartFinishScope net6.0 923ns 4.48ns 17.9ns 0 0 0 696 B
#7842 StartFinishScope netcoreapp3.1 1.23μs 3.95ns 15.3ns 0 0 0 696 B
#7842 StartFinishScope net472 1.12μs 0.566ns 2.12ns 0.101 0 0 658 B
Benchmarks.Trace.TraceAnnotationsBenchmark - Same speed ✔️ Same allocations ✔️

Raw results

Branch Method Toolchain Mean StdError StdDev Gen 0 Gen 1 Gen 2 Allocated
master RunOnMethodBegin net6.0 1.09μs 5.32ns 21.9ns 0 0 0 696 B
master RunOnMethodBegin netcoreapp3.1 1.42μs 7.2ns 33ns 0 0 0 696 B
master RunOnMethodBegin net472 1.47μs 2.4ns 9.28ns 0.103 0 0 658 B
#7842 RunOnMethodBegin net6.0 1.04μs 1.67ns 6.48ns 0 0 0 696 B
#7842 RunOnMethodBegin netcoreapp3.1 1.45μs 5.83ns 22.6ns 0 0 0 696 B
#7842 RunOnMethodBegin net472 1.47μs 1.04ns 4.01ns 0.103 0 0 658 B

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dd-trace-dotnet-ci-bot bot commented Nov 19, 2025 •
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Execution-Time Benchmarks Report ⏱️

Execution-time results for samples comparing This PR (7842) and master.

✅ No regressions detected - check the details below

Full Metrics Comparison

FakeDbCommand

Metric Master (Mean ± 95% CI) Current (Mean ± 95% CI) Change Status
.NET Framework 4.8 - Baseline
duration75.38 ± (75.49 - 76.20) ms75.46 ± (75.43 - 76.24) ms+0.1%✅⬆️
.NET Framework 4.8 - Bailout
duration79.76 ± (79.52 - 80.18) ms79.89 ± (79.60 - 80.40) ms+0.2%✅⬆️
.NET Framework 4.8 - CallTarget+Inlining+NGEN
duration1109.88 ± (1111.58 - 1122.37) ms1115.95 ± (1117.45 - 1126.66) ms+0.5%✅⬆️
.NET Core 3.1 - Baseline
process.internal_duration_ms23.00 ± (22.93 - 23.07) ms22.89 ± (22.82 - 22.97) ms-0.5%✅
process.time_to_main_ms87.18 ± (86.84 - 87.52) ms87.16 ± (86.86 - 87.46) ms-0.0%✅
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed10.91 ± (10.91 - 10.91) MB10.90 ± (10.90 - 10.90) MB-0.1%✅
runtime.dotnet.threads.count12 ± (12 - 12)12 ± (12 - 12)+0.0%✅
.NET Core 3.1 - Bailout
process.internal_duration_ms22.75 ± (22.69 - 22.81) ms22.85 ± (22.78 - 22.93) ms+0.5%✅⬆️
process.time_to_main_ms87.56 ± (87.19 - 87.93) ms89.08 ± (88.71 - 89.46) ms+1.7%✅⬆️
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed10.95 ± (10.94 - 10.95) MB10.94 ± (10.93 - 10.94) MB-0.1%✅
runtime.dotnet.threads.count13 ± (13 - 13)13 ± (13 - 13)+0.0%✅
.NET Core 3.1 - CallTarget+Inlining+NGEN
process.internal_duration_ms218.72 ± (217.39 - 220.04) ms218.38 ± (217.03 - 219.73) ms-0.2%✅
process.time_to_main_ms548.05 ± (546.77 - 549.33) ms545.14 ± (543.98 - 546.30) ms-0.5%✅
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed52.62 ± (52.60 - 52.64) MB52.46 ± (52.45 - 52.48) MB-0.3%✅
runtime.dotnet.threads.count28 ± (28 - 28)28 ± (28 - 28)+0.1%✅⬆️
.NET 6 - Baseline
process.internal_duration_ms21.67 ± (21.60 - 21.74) ms21.72 ± (21.64 - 21.81) ms+0.3%✅⬆️
process.time_to_main_ms75.78 ± (75.42 - 76.13) ms76.45 ± (76.04 - 76.86) ms+0.9%✅⬆️
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed10.61 ± (10.61 - 10.62) MB10.61 ± (10.61 - 10.62) MB-0.0%✅
runtime.dotnet.threads.count10 ± (10 - 10)10 ± (10 - 10)+0.0%✅
.NET 6 - Bailout
process.internal_duration_ms21.86 ± (21.79 - 21.94) ms21.76 ± (21.67 - 21.84) ms-0.5%✅
process.time_to_main_ms78.17 ± (77.79 - 78.54) ms78.16 ± (77.65 - 78.67) ms-0.0%✅
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed10.67 ± (10.67 - 10.67) MB10.66 ± (10.65 - 10.66) MB-0.1%✅
runtime.dotnet.threads.count11 ± (11 - 11)11 ± (11 - 11)+0.0%✅
.NET 6 - CallTarget+Inlining+NGEN
process.internal_duration_ms206.31 ± (204.95 - 207.67) ms209.22 ± (207.27 - 211.17) ms+1.4%✅⬆️
process.time_to_main_ms513.43 ± (512.06 - 514.80) ms511.07 ± (510.02 - 512.12) ms-0.5%✅
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed51.86 ± (51.83 - 51.89) MB51.60 ± (51.57 - 51.63) MB-0.5%✅
runtime.dotnet.threads.count28 ± (28 - 28)28 ± (28 - 28)+0.1%✅⬆️
.NET 8 - Baseline
process.internal_duration_ms19.88 ± (19.81 - 19.95) ms19.99 ± (19.92 - 20.05) ms+0.5%✅⬆️
process.time_to_main_ms75.61 ± (75.27 - 75.94) ms76.13 ± (75.79 - 76.47) ms+0.7%✅⬆️
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed7.66 ± (7.66 - 7.67) MB7.65 ± (7.64 - 7.65) MB-0.2%✅
runtime.dotnet.threads.count10 ± (10 - 10)10 ± (10 - 10)+0.0%✅
.NET 8 - Bailout
process.internal_duration_ms19.64 ± (19.58 - 19.70) ms19.88 ± (19.81 - 19.95) ms+1.2%✅⬆️
process.time_to_main_ms75.86 ± (75.57 - 76.14) ms76.65 ± (76.36 - 76.94) ms+1.0%✅⬆️
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed7.71 ± (7.70 - 7.72) MB7.70 ± (7.69 - 7.71) MB-0.1%✅
runtime.dotnet.threads.count11 ± (11 - 11)11 ± (11 - 11)+0.0%✅
.NET 8 - CallTarget+Inlining+NGEN
process.internal_duration_ms191.79 ± (190.93 - 192.66) ms192.67 ± (191.82 - 193.52) ms+0.5%✅⬆️
process.time_to_main_ms492.11 ± (491.10 - 493.13) ms489.12 ± (488.01 - 490.24) ms-0.6%✅
runtime.dotnet.exceptions.count0 ± (0 - 0)0 ± (0 - 0)+0.0%✅
runtime.dotnet.mem.committed38.97 ± (38.93 - 39.01) MB38.91 ± (38.87 - 38.95) MB-0.1%✅
runtime.dotnet.threads.count27 ± (27 - 27)27 ± (27 - 27)+0.1%✅⬆️

HttpMessageHandler

Metric Master (Mean ± 95% CI) Current (Mean ± 95% CI) Change Status
.NET Framework 4.8 - Baseline
duration192.05 ± (191.97 - 192.89) ms191.62 ± (191.66 - 192.36) ms-0.2%✅
.NET Framework 4.8 - Bailout
duration195.26 ± (195.04 - 195.57) ms195.43 ± (195.21 - 195.79) ms+0.1%✅⬆️
.NET Framework 4.8 - CallTarget+Inlining+NGEN
duration1163.36 ± (1164.37 - 1172.84) ms1160.69 ± (1163.00 - 1171.40) ms-0.2%✅
.NET Core 3.1 - Baseline
process.internal_duration_ms189.26 ± (188.81 - 189.70) ms187.88 ± (187.49 - 188.27) ms-0.7%✅
process.time_to_main_ms81.34 ± (81.06 - 81.62) ms80.60 ± (80.43 - 80.78) ms-0.9%✅
runtime.dotnet.exceptions.count3 ± (3 - 3)3 ± (3 - 3)+0.0%✅
runtime.dotnet.mem.committed16.05 ± (16.02 - 16.08) MB16.06 ± (16.03 - 16.09) MB+0.1%✅⬆️
runtime.dotnet.threads.count20 ± (19 - 20)20 ± (19 - 20)+0.2%✅⬆️
.NET Core 3.1 - Bailout
process.internal_duration_ms187.33 ± (187.01 - 187.65) ms187.00 ± (186.63 - 187.38) ms-0.2%✅
process.time_to_main_ms81.96 ± (81.84 - 82.07) ms81.75 ± (81.60 - 81.90) ms-0.3%✅
runtime.dotnet.exceptions.count3 ± (3 - 3)3 ± (3 - 3)+0.0%✅
runtime.dotnet.mem.committed16.12 ± (16.09 - 16.15) MB16.08 ± (16.05 - 16.11) MB-0.2%✅
runtime.dotnet.threads.count21 ± (20 - 21)21 ± (21 - 21)+0.2%✅⬆️
.NET Core 3.1 - CallTarget+Inlining+NGEN
process.internal_duration_ms394.95 ± (392.64 - 397.26) ms396.63 ± (393.70 - 399.56) ms+0.4%✅⬆️
process.time_to_main_ms518.95 ± (518.27 - 519.62) ms516.13 ± (515.48 - 516.78) ms-0.5%✅
runtime.dotnet.exceptions.count3 ± (3 - 3)3 ± (3 - 3)+0.0%✅
runtime.dotnet.mem.committed63.05 ± (62.89 - 63.21) MB62.60 ± (62.45 - 62.75) MB-0.7%✅
runtime.dotnet.threads.count29 ± (29 - 29)29 ± (29 - 29)-0.1%✅
.NET 6 - Baseline
process.internal_duration_ms192.46 ± (192.07 - 192.84) ms191.40 ± (191.05 - 191.75) ms-0.6%✅
process.time_to_main_ms70.02 ± (69.83 - 70.22) ms69.70 ± (69.51 - 69.89) ms-0.5%✅
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed16.34 ± (16.31 - 16.37) MB16.07 ± (15.92 - 16.21) MB-1.7%✅
runtime.dotnet.threads.count19 ± (19 - 19)18 ± (18 - 18)-5.8%✅
.NET 6 - Bailout
process.internal_duration_ms191.03 ± (190.75 - 191.31) ms190.48 ± (190.24 - 190.72) ms-0.3%✅
process.time_to_main_ms70.89 ± (70.77 - 71.00) ms70.59 ± (70.49 - 70.68) ms-0.4%✅
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed16.14 ± (16.00 - 16.29) MB16.17 ± (16.04 - 16.31) MB+0.2%✅⬆️
runtime.dotnet.threads.count19 ± (19 - 19)19 ± (19 - 19)-0.2%✅
.NET 6 - CallTarget+Inlining+NGEN
process.internal_duration_ms411.77 ± (408.71 - 414.83) ms408.48 ± (405.26 - 411.70) ms-0.8%✅
process.time_to_main_ms487.60 ± (487.05 - 488.14) ms480.83 ± (480.25 - 481.41) ms-1.4%✅
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed62.16 ± (62.02 - 62.30) MB61.77 ± (61.64 - 61.91) MB-0.6%✅
runtime.dotnet.threads.count29 ± (29 - 29)30 ± (29 - 30)+0.2%✅⬆️
.NET 8 - Baseline
process.internal_duration_ms190.46 ± (190.15 - 190.76) ms189.76 ± (189.32 - 190.21) ms-0.4%✅
process.time_to_main_ms69.42 ± (69.28 - 69.56) ms69.24 ± (69.05 - 69.43) ms-0.3%✅
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed11.72 ± (11.69 - 11.75) MB11.77 ± (11.74 - 11.80) MB+0.4%✅⬆️
runtime.dotnet.threads.count18 ± (18 - 18)18 ± (18 - 18)+0.5%✅⬆️
.NET 8 - Bailout
process.internal_duration_ms189.46 ± (189.21 - 189.70) ms188.98 ± (188.70 - 189.26) ms-0.2%✅
process.time_to_main_ms70.39 ± (70.29 - 70.49) ms70.30 ± (70.22 - 70.38) ms-0.1%✅
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed11.79 ± (11.76 - 11.83) MB11.75 ± (11.68 - 11.82) MB-0.4%✅
runtime.dotnet.threads.count19 ± (19 - 19)19 ± (19 - 19)-1.1%✅
.NET 8 - CallTarget+Inlining+NGEN
process.internal_duration_ms361.79 ± (360.17 - 363.40) ms358.64 ± (356.91 - 360.36) ms-0.9%✅
process.time_to_main_ms463.84 ± (463.38 - 464.29) ms458.10 ± (457.38 - 458.81) ms-1.2%✅
runtime.dotnet.exceptions.count4 ± (4 - 4)4 ± (4 - 4)+0.0%✅
runtime.dotnet.mem.committed50.44 ± (50.40 - 50.49) MB50.35 ± (50.31 - 50.38) MB-0.2%✅
runtime.dotnet.threads.count29 ± (29 - 29)29 ± (29 - 29)+0.2%✅⬆️
Comparison explanation

Execution-time benchmarks measure the whole time it takes to execute a program, and are intended to measure the one-off costs. Cases where the execution time results for the PR are worse than latest master results are highlighted in **red**. The following thresholds were used for comparing the execution times:

  • Welch test with statistical test for significance of 5%
  • Only results indicating a difference greater than 5% and 5 ms are considered.

Note that these results are based on a single point-in-time result for each branch. For full results, see the dashboard.

Graphs show the p99 interval based on the mean and StdDev of the test run, as well as the mean value of the run (shown as a diamond below the graph).

Duration charts
FakeDbCommand (.NET Framework 4.8) 
gantt
    title Execution time (ms) FakeDbCommand (.NET Framework 4.8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (7842) - mean (76ms)  : 70, 82
    master - mean (76ms)  : 71, 81

    section Bailout
    This PR (7842) - mean (80ms)  : 74, 86
    master - mean (80ms)  : 75, 85

    section CallTarget+Inlining+NGEN
    This PR (7842) - mean (1,122ms)  : 1056, 1188
    master - mean (1,117ms)  : 1038, 1196
Loading
FakeDbCommand (.NET Core 3.1) 
gantt
    title Execution time (ms) FakeDbCommand (.NET Core 3.1)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (7842) - mean (118ms)  : 112, 123
    master - mean (118ms)  : 110, 125

    section Bailout
    This PR (7842) - mean (120ms)  : 112, 127
    master - mean (118ms)  : 111, 125

    section CallTarget+Inlining+NGEN
    This PR (7842) - mean (795ms)  : 750, 840
    master - mean (800ms)  : 758, 841
Loading
FakeDbCommand (.NET 6) 
gantt
    title Execution time (ms) FakeDbCommand (.NET 6)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (7842) - mean (105ms)  : 99, 111
    master - mean (104ms)  : 97, 111

    section Bailout
    This PR (7842) - mean (107ms)  : 99, 114
    master - mean (107ms)  : 100, 114

    section CallTarget+Inlining+NGEN
    This PR (7842) - mean (751ms)  : 714, 789
    master - mean (754ms)  : 711, 797
Loading
FakeDbCommand (.NET 8) 
gantt
    title Execution time (ms) FakeDbCommand (.NET 8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (7842) - mean (105ms)  : 98, 111
    master - mean (104ms)  : 98, 110

    section Bailout
    This PR (7842) - mean (105ms)  : 100, 110
    master - mean (104ms)  : 99, 109

    section CallTarget+Inlining+NGEN
    This PR (7842) - mean (720ms)  : 680, 760
    master - mean (715ms)  : 689, 740
Loading
HttpMessageHandler (.NET Framework 4.8) 
gantt
    title Execution time (ms) HttpMessageHandler (.NET Framework 4.8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (7842) - mean (192ms)  : 189, 195
    master - mean (192ms)  : 188, 197

    section Bailout
    This PR (7842) - mean (196ms)  : 193, 198
    master - mean (195ms)  : 193, 198

    section CallTarget+Inlining+NGEN
    This PR (7842) - mean (1,167ms)  : 1107, 1227
    master - mean (1,169ms)  : 1105, 1232
Loading
HttpMessageHandler (.NET Core 3.1) 
gantt
    title Execution time (ms) HttpMessageHandler (.NET Core 3.1)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (7842) - mean (276ms)  : 272, 281
    master - mean (279ms)  : 274, 284

    section Bailout
    This PR (7842) - mean (277ms)  : 273, 281
    master - mean (277ms)  : 273, 281

    section CallTarget+Inlining+NGEN
    This PR (7842) - mean (946ms)  : 888, 1004
    master - mean (947ms)  : 911, 984
Loading
HttpMessageHandler (.NET 6) 
gantt
    title Execution time (ms) HttpMessageHandler (.NET 6)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (7842) - mean (269ms)  : 264, 275
    master - mean (271ms)  : 266, 275

    section Bailout
    This PR (7842) - mean (269ms)  : 266, 272
    master - mean (270ms)  : 265, 274

    section CallTarget+Inlining+NGEN
    This PR (7842) - mean (918ms)  : 872, 964
    master - mean (931ms)  : 882, 979
Loading
HttpMessageHandler (.NET 8) 
gantt
    title Execution time (ms) HttpMessageHandler (.NET 8)
    dateFormat  x
    axisFormat %Q
    todayMarker off
    section Baseline
    This PR (7842) - mean (269ms)  : 263, 276
    master - mean (270ms)  : 265, 274

    section Bailout
    This PR (7842) - mean (269ms)  : 265, 272
    master - mean (269ms)  : 265, 274

    section CallTarget+Inlining+NGEN
    This PR (7842) - mean (849ms)  : 832, 867
    master - mean (857ms)  : 836, 879
Loading

zacharycmontoya
zacharycmontoya reviewed Nov 19, 2025
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tracer/test/test-applications/integrations/Samples.Wcf/Client/Startup.cs
@@ -57,6 +53,8 @@ private static async Task<int> Invoke_ServerSyncAdd_Endpoints(CalculatorClient c

try
{
using var scope = SampleHelpers.CreateScope("ServerEmptyActionAdd");
calculator.DatadogScope = scope;
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@zacharycmontoya zacharycmontoya Nov 19, 2025

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Since you have some integration tests in place, can we try to remove this DatadogScope property? If it doesn't affect the results, we should remove it so we have less custom code

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@andrewlock andrewlock Nov 20, 2025

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Unfortunately, if we remove this scope, it will make the snapshots flakey. The nature of how WCF works means that all the client spans are identical, which in turn means the spans end up with a non-deterministic order if we remove these. This is also why I split each individual operation into a separate span, instead of having the single over-arching span.

FWIW, I'm not sure why we need to set the DatadogScope property - AFAICT it's not used, but as it was doing it before, I cargo-culted instead of making more changes 😄

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Ah sorry, yes what I meant was removing the line calculator.DatadogScope = scope;. I understand that the manual scope in general helps with snapshot stability 👍🏼

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@andrewlock andrewlock Nov 21, 2025

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Cool, I'll do that in the follow up PR that addresses other minor issues 🙂

zacharycmontoya
zacharycmontoya reviewed Nov 19, 2025
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tracer/src/Datadog.Trace/ClrProfiler/AutoInstrumentation/Wcf/WcfCommon.cs
return null;
}

public static CallTargetState ActivateScopeFromContext()
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super small nit: It seems like this method has slightly too many responsibilities in that it's calling both Tracer.Instance.ActivateSpan(Span) and returning a CallTargetState. The only refactoring that comes to mind is to make this a TryGetScopeFromContext and return the fields used to populate the CallTargetState. And then from the caller you can activate the span and create the CallTargetState, but then you're making each callsite have to repeat multiple lines of code. I'm not sure if that's better than what you've done here, so no need to take my suggestion

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Yeah, I agree with you, but then also it's easy to screw up and forget to capture one or more parts that you need.. plus we can delay capturing the distributed context unless we need it (though we should always hit the "activate" path in normal behaviour, so maybe not a big deal)

As you say, given every callsite would need to copy the exact same code to use the API, I'm not sure it's worth splitting out. We could still capture the previous and then return a different carrier object instead of CallTargetState from the method, and then convert it into a CallTargetState at the callsite, but that seems like more hassle for little gain? 🤷‍♂️ meh 😅

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Agreed: meh 😆

zacharycmontoya
zacharycmontoya approved these changes Nov 19, 2025
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LGTM. As discussed, we have a corner case of WCF message headers overriding HTTP message headers. I think this PR is good as-is so we can tackle that as a follow-up PR if you'd like

NachoEchevarria
NachoEchevarria approved these changes Nov 20, 2025
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Thanks! This will help us a lot by reducing the customer WCF issues.

@andrewlock andrewlock merged commit 01158ef into master Nov 21, 2025
153 checks passed
@andrewlock andrewlock deleted the andrew/wcf branch November 21, 2025 12:23
@github-actions github-actions bot added this to the vNext-v3 milestone Nov 21, 2025
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