Load the tracer/profiler after guardrails checks

[kevingosse]

Summary of changes

Instead of loading the native trace/profiler as soon as the native loader is loaded, wait until we've checked the target runtime/process name.

Reason for change

When returning an error code from ICorProfilerCallback::Initialize, .NET unloads the native loader. However, the native tracer/profiler stay in memory (because .NET is not aware of them). Therefore it makes sense to perform as many checks as possible before actually loading them. Plus that's less work to do in the most common failure cases (blocklisted process).

There are still cases where we're not unloading the native tracer/profiler even though we should (for instance, if their Initialize method failed). However they're trickier to get right (we must make sure there's no background thread running, for instance the logger) so I'll leave that for a future PR.

Implementation details

Moved the LoadConfiguration/LoadClassFactory/LoadInstance methods of the dynamic dispatcher into a single Initialize method.

Test coverage

Other details

[datadog-ddstaging[bot]]

Datadog Report

Branch report: kevin/better_loader Commit report: a1fdf2e Test service: dd-trace-dotnet

:x: 118 Failed (8 Known Flaky), 349922 Passed, 1526 Skipped, 9h 27m 18.66s Total Time :hourglass: 1 Performance Regression

:x: Failed Tests (118)

This report shows up to 5 failed tests.

• SubmitsTraces - Datadog.Trace.ClrProfiler.IntegrationTests.AWS.AwsLambdaTests - Details

<details>
<summary>Expand for error</summary>

```
Expected relevantSpans to contain at least 76 item(s) because we want to ensure that we don't timeout while waiting for spans from the mock tracer agent, but found 0: {empty}.
```
</details>

• SubmitsTraces - Datadog.Trace.ClrProfiler.IntegrationTests.AWS.AwsLambdaTests - Details

  Expand for error

  ``` Expected relevantSpans to contain at least 76 item(s) because we want to ensure that we don't timeout while waiting for spans from the mock tracer agent, but found 0: {empty}. ```

• SubmitsTraces - Datadog.Trace.ClrProfiler.IntegrationTests.AWS.AwsLambdaTests - Details

  Expand for error

  ``` Expected relevantSpans to contain at least 76 item(s) because we want to ensure that we don't timeout while waiting for spans from the mock tracer agent, but found 0: {empty}. ```

• DetectAgentUrl - Datadog.Trace.Tools.dd_dotnet.ArtifactTests.Checks.AgentConnectivityCheckTests - Details

  Expand for error

  ``` Expected errorOutput "Running checks on process 2088 Process name: Samples.Console ---- STARTING TRACER SETUP CHECKS ----- Target process is running with .NET Framework 1. Checking Modules Needed so the Tracer Loads: [SUCCESS]: The native library version 3.4.0.0 is loaded into the process. [WARNING]: Tracer is not loaded into the process 2. Checking DD_DOTNET_TRACER_HOME and related configuration value: [SUCCESS]: DD_DOTNET_TRACER_HOME is set to 'D:\a\1\s\shared\bin\monitoring-home' and the directory was found correctly. 3. Checking COR_PROFILER_PATH and related configuration value: [SUCCESS]: The environment variable COR_PROFILER_PATH is set to the correct value of D:\a\1\s\shared\bin\monitoring-home\win-x86\Datadog.Trace.ClrProfiler.Native.dll . 4. Checking COR_PROFILER and related configuration value: [SUCCESS]: The environment variable COR_PROFILER is set to the correct value of {846F5F1C-F9AE-4B07-969E-05C26BC060D8}. 5. Checking COR_ENABLE_PROFILING and related configuration value: [SUCCESS]: The environment variable COR_ENABLE_PROFILING is set to the correct value of 1. 6. Checking if process tracing configuration matches Installer or Bundler: Installer/MSI related documentation: https://docs.datadoghq.com/tracing/trace_collection/dd_libraries/dotnet-framewor k?tab=windows#install-the-tracer [FAILURE]: Unable to find Datadog .NET Tracer program, make sure the tracer has been properly installed with the MSI. [WARNING]: The registry key SOFTWARE\Classes\CLSID\{846F5F1C-F9AE-4B07-969E-05C26BC060D8}\InprocServer32 is missing. If using the MSI, make sure the installation was completed correctly try to repair/reinstall it. [WARNING]: The registry key SOFTWARE\Classes\Wow6432Node\CLSID\{846F5F1C-F9AE-4B07-969E-05C26BC060D8}\Inproc Server32 is missing. If using the MSI, make sure the installation was completed correctly try to repair/reinstall it. " to contain "Detected agent url: http://fakeurl:7777/. Note: this url may be incorrect if you configured the application through a configuration file.". ```

• DetectAgentUrl - Datadog.Trace.Tools.dd_dotnet.ArtifactTests.Checks.AgentConnectivityCheckTests - Details

  Expand for error

  ``` Expected errorOutput "Running checks on process 6336 Process name: Samples.Console ---- STARTING TRACER SETUP CHECKS ----- Target process is running with .NET Framework 1. Checking Modules Needed so the Tracer Loads: [SUCCESS]: The native library version 3.4.0.0 is loaded into the process. [WARNING]: Tracer is not loaded into the process 2. Checking DD_DOTNET_TRACER_HOME and related configuration value: [SUCCESS]: DD_DOTNET_TRACER_HOME is set to 'D:\a\1\s\shared\bin\monitoring-home' and the directory was found correctly. 3. Checking COR_PROFILER_PATH and related configuration value: [SUCCESS]: The environment variable COR_PROFILER_PATH is set to the correct value of D:\a\1\s\shared\bin\monitoring-home\win-x86\Datadog.Trace.ClrProfiler.Native.dll . 4. Checking COR_PROFILER and related configuration value: [SUCCESS]: The environment variable COR_PROFILER is set to the correct value of {846F5F1C-F9AE-4B07-969E-05C26BC060D8}. 5. Checking COR_ENABLE_PROFILING and related configuration value: [SUCCESS]: The environment variable COR_ENABLE_PROFILING is set to the correct value of 1. 6. Checking if process tracing configuration matches Installer or Bundler: Installer/MSI related documentation: https://docs.datadoghq.com/tracing/trace_collection/dd_libraries/dotnet-framewor k?tab=windows#install-the-tracer [FAILURE]: Unable to find Datadog .NET Tracer program, make sure the tracer has been properly installed with the MSI. [WARNING]: The registry key SOFTWARE\Classes\CLSID\{846F5F1C-F9AE-4B07-969E-05C26BC060D8}\InprocServer32 is missing. If using the MSI, make sure the installation was completed correctly try to repair/reinstall it. [WARNING]: The registry key SOFTWARE\Classes\Wow6432Node\CLSID\{846F5F1C-F9AE-4B07-969E-05C26BC060D8}\Inproc Server32 is missing. If using the MSI, make sure the installation was completed correctly try to repair/reinstall it. " to contain "Detected agent url: http://fakeurl:7777/. Note: this url may be incorrect if you configured the application through a configuration file.". ```

:hourglass: Performance Regressions vs Default Branch (1)

• Baseline_liveheap - scenarios 2.97s (+218.43ms, +8%) - Details

[andrewlock]

Execution-Time Benchmarks Report :stopwatch:

Execution-time results for samples comparing the following branches/commits:

• This PR (5968)
• master

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 shown 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).

gantt
    title Execution time (ms) FakeDbCommand (.NET Framework 4.6.2) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Baseline
    This PR (5968) - mean (70ms)  : 68, 72
     .   : milestone, 70,
    master - mean (69ms)  : 67, 72
     .   : milestone, 69,

    section CallTarget+Inlining+NGEN
    This PR (5968) - mean (1,099ms)  : 1078, 1120
     .   : milestone, 1099,
    master - mean (1,100ms)  : 1075, 1126
     .   : milestone, 1100,

gantt
    title Execution time (ms) FakeDbCommand (.NET Core 3.1) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Baseline
    This PR (5968) - mean (109ms)  : 106, 111
     .   : milestone, 109,
    master - mean (108ms)  : 106, 110
     .   : milestone, 108,

    section CallTarget+Inlining+NGEN
    This PR (5968) - mean (768ms)  : 753, 784
     .   : milestone, 768,
    master - mean (764ms)  : 750, 779
     .   : milestone, 764,

gantt
    title Execution time (ms) FakeDbCommand (.NET 6) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Baseline
    This PR (5968) - mean (92ms)  : 89, 94
     .   : milestone, 92,
    master - mean (91ms)  : 89, 94
     .   : milestone, 91,

    section CallTarget+Inlining+NGEN
    This PR (5968) - mean (728ms)  : 712, 744
     .   : milestone, 728,
    master - mean (726ms)  : 709, 743
     .   : milestone, 726,

gantt
    title Execution time (ms) HttpMessageHandler (.NET Framework 4.6.2) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Baseline
    This PR (5968) - mean (190ms)  : 187, 193
     .   : milestone, 190,
    master - mean (190ms)  : 186, 193
     .   : milestone, 190,

    section CallTarget+Inlining+NGEN
    This PR (5968) - mean (1,192ms)  : 1173, 1212
     .   : milestone, 1192,
    master - mean (1,192ms)  : 1166, 1219
     .   : milestone, 1192,

gantt
    title Execution time (ms) HttpMessageHandler (.NET Core 3.1) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Baseline
    This PR (5968) - mean (275ms)  : 271, 279
     .   : milestone, 275,
    master - mean (276ms)  : 272, 280
     .   : milestone, 276,

    section CallTarget+Inlining+NGEN
    This PR (5968) - mean (938ms)  : 918, 958
     .   : milestone, 938,
    master - mean (939ms)  : 922, 956
     .   : milestone, 939,

gantt
    title Execution time (ms) HttpMessageHandler (.NET 6) 
    dateFormat  X
    axisFormat %s
    todayMarker off
    section Baseline
    This PR (5968) - mean (265ms)  : 260, 269
     .   : milestone, 265,
    master - mean (264ms)  : 261, 268
     .   : milestone, 264,

    section CallTarget+Inlining+NGEN
    This PR (5968) - mean (926ms)  : 901, 951
     .   : milestone, 926,
    master - mean (924ms)  : 906, 942
     .   : milestone, 924,

[andrewlock]

Benchmarks Report for tracer :snail:

Benchmarks for #5968 compared to master:

• 1 benchmarks are slower, with geometric mean 1.132
• All benchmarks have the same 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 :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`StartStopWithChild`|net6.0|7.81μs|44.1ns|296ns|0.0117| 0.0039|0|5.43 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`StartStopWithChild`|netcoreapp3.1|9.96μs|50.8ns|313ns|0.0197| 0.00985|0|5.62 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`StartStopWithChild`|net472|16μs|49.2ns|191ns|1.01| 0.306|0.0942|6.07 KB| |#5968|`StartStopWithChild`|net6.0|7.65μs|42.5ns|266ns|0.0182| 0.00728|0|5.43 KB| |#5968|`StartStopWithChild`|netcoreapp3.1|9.96μs|54.9ns|329ns|0.0146| 0.00485|0|5.62 KB| |#5968|`StartStopWithChild`|net472|16μs|49.1ns|190ns|1.01| 0.296|0.0959|6.06 KB|

Benchmarks.Trace.AgentWriterBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`WriteAndFlushEnrichedTraces`|net6.0|456μs|290ns|1.12μs|0| 0|0|2.7 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`WriteAndFlushEnrichedTraces`|netcoreapp3.1|631μs|351ns|1.36μs|0| 0|0|2.7 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`WriteAndFlushEnrichedTraces`|net472|818μs|679ns|2.63μs|0.411| 0|0|3.3 KB| |#5968|`WriteAndFlushEnrichedTraces`|net6.0|463μs|465ns|1.8μs|0| 0|0|2.7 KB| |#5968|`WriteAndFlushEnrichedTraces`|netcoreapp3.1|642μs|275ns|990ns|0| 0|0|2.7 KB| |#5968|`WriteAndFlushEnrichedTraces`|net472|834μs|297ns|1.11μs|0.414| 0|0|3.3 KB|

Benchmarks.Trace.AspNetCoreBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`SendRequest`|net6.0|208μs|1.19μs|9.77μs|0.196| 0|0|18.45 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`SendRequest`|netcoreapp3.1|226μs|1.1μs|4.9μs|0.212| 0|0|20.61 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`SendRequest`|net472|0.000135ns|9.49E‑05ns|0.000342ns|0| 0|0|0 b| |#5968|`SendRequest`|net6.0|209μs|1.22μs|10.9μs|0.242| 0|0|18.45 KB| |#5968|`SendRequest`|netcoreapp3.1|235μs|1.35μs|10.5μs|0.236| 0|0|20.61 KB| |#5968|`SendRequest`|net472|0.00181ns|0.000817ns|0.00316ns|0| 0|0|0 b|

Benchmarks.Trace.CIVisibilityProtocolWriterBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`WriteAndFlushEnrichedTraces`|net6.0|563μs|2.98μs|15.2μs|0.568| 0|0|41.64 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`WriteAndFlushEnrichedTraces`|netcoreapp3.1|694μs|3.6μs|20.4μs|0.353| 0|0|41.73 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`WriteAndFlushEnrichedTraces`|net472|839μs|2.72μs|10.2μs|8.19| 2.59|0.431|53.31 KB| |#5968|`WriteAndFlushEnrichedTraces`|net6.0|574μs|3.14μs|17.5μs|0.551| 0|0|41.68 KB| |#5968|`WriteAndFlushEnrichedTraces`|netcoreapp3.1|728μs|3.81μs|19.4μs|0.365| 0|0|41.6 KB| |#5968|`WriteAndFlushEnrichedTraces`|net472|847μs|3.88μs|16μs|8.13| 2.57|0.428|53.32 KB|

Benchmarks.Trace.DbCommandBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`ExecuteNonQuery`|net6.0|1.3μs|0.824ns|2.97ns|0.0143| 0|0|1.02 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`ExecuteNonQuery`|netcoreapp3.1|1.71μs|1.98ns|7.68ns|0.0136| 0|0|1.02 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`ExecuteNonQuery`|net472|2.09μs|1.43ns|5.54ns|0.156| 0|0|987 B| |#5968|`ExecuteNonQuery`|net6.0|1.36μs|1.7ns|6.57ns|0.0142| 0|0|1.02 KB| |#5968|`ExecuteNonQuery`|netcoreapp3.1|1.75μs|0.8ns|2.99ns|0.014| 0|0|1.02 KB| |#5968|`ExecuteNonQuery`|net472|2.07μs|3.52ns|13.6ns|0.156| 0|0|987 B|

Benchmarks.Trace.ElasticsearchBenchmark - Slower :warning: Same allocations :heavy_check_mark: #### Slower :warning: in #5968 | Benchmark | diff/base | Base Median (ns) | Diff Median (ns) | Modality | |:----------|-----------:|-----------:|--------:|--------:| | Benchmarks.Trace.ElasticsearchBenchmark.CallElasticsearch‑net6.0 | 1.132 | 1,141.69 | 1,292.93 |

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`CallElasticsearch`|net6.0|1.14μs|0.707ns|2.74ns|0.0137| 0|0|976 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`CallElasticsearch`|netcoreapp3.1|1.47μs|1.22ns|4.41ns|0.0132| 0|0|976 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`CallElasticsearch`|net472|2.57μs|2.18ns|8.43ns|0.157| 0|0|995 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`CallElasticsearchAsync`|net6.0|1.3μs|0.799ns|2.99ns|0.0129| 0|0|952 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`CallElasticsearchAsync`|netcoreapp3.1|1.57μs|0.71ns|2.66ns|0.0142| 0|0|1.02 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`CallElasticsearchAsync`|net472|2.74μs|1.95ns|7.55ns|0.166| 0|0|1.05 KB| |#5968|`CallElasticsearch`|net6.0|1.29μs|1.32ns|4.94ns|0.0136| 0|0|976 B| |#5968|`CallElasticsearch`|netcoreapp3.1|1.47μs|0.607ns|2.19ns|0.0132| 0|0|976 B| |#5968|`CallElasticsearch`|net472|2.53μs|2.51ns|9.74ns|0.157| 0|0|995 B| |#5968|`CallElasticsearchAsync`|net6.0|1.23μs|2.13ns|7.98ns|0.013| 0|0|952 B| |#5968|`CallElasticsearchAsync`|netcoreapp3.1|1.69μs|0.594ns|2.3ns|0.0144| 0|0|1.02 KB| |#5968|`CallElasticsearchAsync`|net472|2.72μs|1.54ns|5.78ns|0.166| 0|0|1.05 KB|

Benchmarks.Trace.GraphQLBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`ExecuteAsync`|net6.0|1.19μs|0.785ns|3.04ns|0.0131| 0|0|952 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`ExecuteAsync`|netcoreapp3.1|1.61μs|1.45ns|5.44ns|0.0122| 0|0|952 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`ExecuteAsync`|net472|1.84μs|2.08ns|8.05ns|0.145| 0|0|915 B| |#5968|`ExecuteAsync`|net6.0|1.25μs|1.19ns|4.44ns|0.0131| 0|0|952 B| |#5968|`ExecuteAsync`|netcoreapp3.1|1.64μs|2.07ns|7.76ns|0.0123| 0|0|952 B| |#5968|`ExecuteAsync`|net472|1.74μs|1.15ns|4.46ns|0.145| 0|0|915 B|

Benchmarks.Trace.HttpClientBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`SendAsync`|net6.0|4.34μs|2.05ns|7.68ns|0.0303| 0|0|2.22 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`SendAsync`|netcoreapp3.1|5.22μs|2.12ns|8.23ns|0.0365| 0|0|2.76 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`SendAsync`|net472|7.79μs|4.57ns|17.1ns|0.499| 0|0|3.15 KB| |#5968|`SendAsync`|net6.0|4.34μs|0.887ns|3.32ns|0.0302| 0|0|2.22 KB| |#5968|`SendAsync`|netcoreapp3.1|5.04μs|2.2ns|8.53ns|0.0352| 0|0|2.76 KB| |#5968|`SendAsync`|net472|7.73μs|2.36ns|9.15ns|0.496| 0|0|3.15 KB|

Benchmarks.Trace.ILoggerBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|net6.0|1.47μs|1.98ns|7.67ns|0.0231| 0|0|1.64 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|netcoreapp3.1|2.23μs|1.52ns|5.88ns|0.022| 0|0|1.64 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|net472|2.48μs|1.74ns|6.75ns|0.25| 0|0|1.57 KB| |#5968|`EnrichedLog`|net6.0|1.45μs|1.78ns|6.65ns|0.023| 0|0|1.64 KB| |#5968|`EnrichedLog`|netcoreapp3.1|2.04μs|1.16ns|4.32ns|0.0225| 0|0|1.64 KB| |#5968|`EnrichedLog`|net472|2.62μs|1.68ns|6.49ns|0.249| 0|0|1.57 KB|

Benchmarks.Trace.Log4netBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|net6.0|113μs|70.2ns|263ns|0.0559| 0|0|4.28 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|netcoreapp3.1|118μs|115ns|447ns|0| 0|0|4.28 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|net472|146μs|174ns|673ns|0.657| 0.219|0|4.46 KB| |#5968|`EnrichedLog`|net6.0|114μs|211ns|818ns|0.057| 0|0|4.28 KB| |#5968|`EnrichedLog`|netcoreapp3.1|119μs|208ns|806ns|0| 0|0|4.28 KB| |#5968|`EnrichedLog`|net472|146μs|170ns|657ns|0.658| 0.219|0|4.46 KB|

Benchmarks.Trace.NLogBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|net6.0|3.05μs|1.38ns|5.15ns|0.0312| 0|0|2.2 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|netcoreapp3.1|4.51μs|6.69ns|25.9ns|0.0289| 0|0|2.2 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|net472|4.81μs|2.2ns|8.53ns|0.32| 0|0|2.02 KB| |#5968|`EnrichedLog`|net6.0|3.07μs|1.08ns|4.2ns|0.0308| 0|0|2.2 KB| |#5968|`EnrichedLog`|netcoreapp3.1|4.08μs|1.76ns|6.83ns|0.0305| 0|0|2.2 KB| |#5968|`EnrichedLog`|net472|4.88μs|1.36ns|5.28ns|0.319| 0|0|2.02 KB|

Benchmarks.Trace.RedisBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`SendReceive`|net6.0|1.38μs|0.697ns|2.7ns|0.0159| 0|0|1.14 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`SendReceive`|netcoreapp3.1|1.7μs|0.666ns|2.58ns|0.0152| 0|0|1.14 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`SendReceive`|net472|2.08μs|0.591ns|2.29ns|0.183| 0|0|1.16 KB| |#5968|`SendReceive`|net6.0|1.24μs|0.684ns|2.65ns|0.0157| 0|0|1.14 KB| |#5968|`SendReceive`|netcoreapp3.1|1.75μs|1.29ns|4.82ns|0.0149| 0|0|1.14 KB| |#5968|`SendReceive`|net472|2.05μs|0.809ns|3.13ns|0.183| 0.00102|0|1.16 KB|

Benchmarks.Trace.SerilogBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|net6.0|2.64μs|0.675ns|2.61ns|0.0224| 0|0|1.6 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|netcoreapp3.1|3.94μs|1.91ns|7.41ns|0.0218| 0|0|1.65 KB| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`EnrichedLog`|net472|4.48μs|2.88ns|11.2ns|0.322| 0|0|2.04 KB| |#5968|`EnrichedLog`|net6.0|2.69μs|1.03ns|4ns|0.0229| 0|0|1.6 KB| |#5968|`EnrichedLog`|netcoreapp3.1|3.95μs|1.55ns|6.02ns|0.0218| 0|0|1.65 KB| |#5968|`EnrichedLog`|net472|4.43μs|2.4ns|9.28ns|0.323| 0|0|2.04 KB|

Benchmarks.Trace.SpanBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`StartFinishSpan`|net6.0|400ns|0.295ns|1.14ns|0.00805| 0|0|576 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`StartFinishSpan`|netcoreapp3.1|553ns|0.459ns|1.78ns|0.00794| 0|0|576 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`StartFinishSpan`|net472|698ns|0.614ns|2.38ns|0.0915| 0|0|578 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`StartFinishScope`|net6.0|524ns|0.382ns|1.48ns|0.00977| 0|0|696 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`StartFinishScope`|netcoreapp3.1|732ns|0.859ns|3.33ns|0.00913| 0|0|696 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`StartFinishScope`|net472|846ns|0.963ns|3.73ns|0.104| 0|0|658 B| |#5968|`StartFinishSpan`|net6.0|403ns|0.145ns|0.562ns|0.00804| 0|0|576 B| |#5968|`StartFinishSpan`|netcoreapp3.1|610ns|0.184ns|0.711ns|0.00794| 0|0|576 B| |#5968|`StartFinishSpan`|net472|701ns|0.525ns|2.03ns|0.0916| 0|0|578 B| |#5968|`StartFinishScope`|net6.0|480ns|0.143ns|0.536ns|0.00969| 0|0|696 B| |#5968|`StartFinishScope`|netcoreapp3.1|681ns|0.305ns|1.18ns|0.00933| 0|0|696 B| |#5968|`StartFinishScope`|net472|875ns|0.694ns|2.69ns|0.104| 0|0|658 B|

Benchmarks.Trace.TraceAnnotationsBenchmark - Same speed :heavy_check_mark: Same allocations :heavy_check_mark:

### Raw results | Branch | Method | Toolchain | Mean | StdError | StdDev | Gen 0 | Gen 1 | Gen 2 | Allocated | |---------|---------------------------- |-------------- |---------:|---------:|--------:|-------:|------:|------:|----------:| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`RunOnMethodBegin`|net6.0|666ns|0.512ns|1.91ns|0.0097| 0|0|696 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`RunOnMethodBegin`|netcoreapp3.1|985ns|0.775ns|3ns|0.00927| 0|0|696 B| |[master](https://github.com/DataDog/dd-trace-dotnet/tree/0bcf8424d6056b71be3638478bcd8377234c1d20)|`RunOnMethodBegin`|net472|1.11μs|1.25ns|4.84ns|0.105| 0|0|658 B| |#5968|`RunOnMethodBegin`|net6.0|663ns|0.432ns|1.67ns|0.00967| 0|0|696 B| |#5968|`RunOnMethodBegin`|netcoreapp3.1|925ns|0.506ns|1.82ns|0.00931| 0|0|696 B| |#5968|`RunOnMethodBegin`|net472|1.16μs|0.353ns|1.37ns|0.104| 0|0|658 B|