[Perf] Linux/x64: 7 Regressions on 6/27/2025 11:05:34 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [a0c5625a8db02927113b66e776dbb670099acfbd](https://github.com/dotnet/runtime/commit/a0c5625a8db02927113b66e776dbb670099acfbd)
Compare | [d38966ff663cb279148a82d1d0364dee40727f88](https://github.com/dotnet/runtime/commit/d38966ff663cb279148a82d1d0364dee40727f88)
Diff | [Diff](https://github.com/dotnet/runtime/compare/a0c5625a8db02927113b66e776dbb670099acfbd...d38966ff663cb279148a82d1d0364dee40727f88)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in Microsoft.Extensions.Logging.EventSourceLogger

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[NestedScopes_TwoMessages - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/Microsoft.Extensions.Logging.EventSourceLogger.NestedScopes_TwoMessages(HasSubscribers%3a%20True%2c%20Json%3a%20True).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/Microsoft.Extensions.Logging/EventSourceBenchmark.cs#L27-#L39>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.98 μs | 3.14 μs | 1.58 | 0.03 | False | | |
|<ul><li>[NestedScopes_TwoMessages - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/Microsoft.Extensions.Logging.EventSourceLogger.NestedScopes_TwoMessages(HasSubscribers%3a%20True%2c%20Json%3a%20False).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/Microsoft.Extensions.Logging/EventSourceBenchmark.cs#L27-#L39>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.00 μs | 3.22 μs | 1.61 | 0.04 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/Microsoft.Extensions.Logging.EventSourceLogger_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/Microsoft.Extensions.Logging.EventSourceLogger_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/Microsoft.Extensions.Logging.EventSourceLogger.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'Microsoft.Extensions.Logging.EventSourceLogger*'
```

<details>

### Microsoft.Extensions.Logging.EventSourceLogger.NestedScopes_TwoMessages(HasSubscribers: True, Json: True)

#### ETL Files

#### Histogram

#### JIT Disasms

### Microsoft.Extensions.Logging.EventSourceLogger.NestedScopes_TwoMessages(HasSubscribers: True, Json: False)

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [a0c5625a8db02927113b66e776dbb670099acfbd](https://github.com/dotnet/runtime/commit/a0c5625a8db02927113b66e776dbb670099acfbd)
Compare | [d38966ff663cb279148a82d1d0364dee40727f88](https://github.com/dotnet/runtime/commit/d38966ff663cb279148a82d1d0364dee40727f88)
Diff | [Diff](https://github.com/dotnet/runtime/compare/a0c5625a8db02927113b66e776dbb670099acfbd...d38966ff663cb279148a82d1d0364dee40727f88)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Diagnostics.Tracing.Perf_EventListener

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[WriteEvent_NoParams - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_NoParams.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Diagnostics.Tracing/Perf_EventListener.cs#L78-#L79>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 30.87 ns | 41.17 ns | 1.33 | 0.13 | False | | |
|<ul><li>[WriteEvent_MixedParams - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_MixedParams.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Diagnostics.Tracing/Perf_EventListener.cs#L87-#L88>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 75.65 ns | 88.72 ns | 1.17 | 0.12 | False | | |
|<ul><li>[WriteEvent_StringParams - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_StringParams.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Diagnostics.Tracing/Perf_EventListener.cs#L84-#L85>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 78.19 ns | 89.73 ns | 1.15 | 0.06 | False | | |
|<ul><li>[WriteEvent_IntParams - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_IntParams.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Diagnostics.Tracing/Perf_EventListener.cs#L81-#L82>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 61.55 ns | 71.05 ns | 1.15 | 0.11 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Diagnostics.Tracing.Perf_EventListener_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Diagnostics.Tracing.Perf_EventListener_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Diagnostics.Tracing.Perf_EventListener_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Diagnostics.Tracing.Perf_EventListener_004.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Diagnostics.Tracing.Perf_EventListener.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Diagnostics.Tracing.Perf_EventListener*'
```

<details>

### System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_NoParams

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_MixedParams

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_StringParams

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_IntParams

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [a0c5625a8db02927113b66e776dbb670099acfbd](https://github.com/dotnet/runtime/commit/a0c5625a8db02927113b66e776dbb670099acfbd)
Compare | [d38966ff663cb279148a82d1d0364dee40727f88](https://github.com/dotnet/runtime/commit/d38966ff663cb279148a82d1d0364dee40727f88)
Diff | [Diff](https://github.com/dotnet/runtime/compare/a0c5625a8db02927113b66e776dbb670099acfbd...d38966ff663cb279148a82d1d0364dee40727f88)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Diagnostics.Perf_EventSource

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Log - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Diagnostics.Perf_EventSource.Log.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Diagnostics/Perf_EventSource.cs#L22-#L27>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 106.76 ns | 127.21 ns | 1.19 | 0.07 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Diagnostics.Perf_EventSource_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Diagnostics.Perf_EventSource.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Diagnostics.Perf_EventSource*'
```

<details>

### System.Diagnostics.Perf_EventSource.Log

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>

Name	Value
Architecture	x64
OS	ubuntu 22.04
Queue	TigerUbuntu
Baseline	a0c5625a8db02927113b66e776dbb670099acfbd
Compare	d38966ff663cb279148a82d1d0364dee40727f88
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
NestedScopes_TwoMessages - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.98 μs	3.14 μs	1.58	0.03	False
NestedScopes_TwoMessages - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	2.00 μs	3.22 μs	1.61	0.04	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
WriteEvent_NoParams - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	30.87 ns	41.17 ns	1.33	0.13	False
WriteEvent_MixedParams - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	75.65 ns	88.72 ns	1.17	0.12	False
WriteEvent_StringParams - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	78.19 ns	89.73 ns	1.15	0.06	False
WriteEvent_IntParams - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	61.55 ns	71.05 ns	1.15	0.11	False

[Perf] Linux/x64: 7 Regressions on 6/27/2025 11:05:34 AM +00:00 #117203

Description

Run Information

Regressions in Microsoft.Extensions.Logging.EventSourceLogger

Repro

Microsoft.Extensions.Logging.EventSourceLogger.NestedScopes_TwoMessages(HasSubscribers: True, Json: True)

ETL Files

Histogram

JIT Disasms

Microsoft.Extensions.Logging.EventSourceLogger.NestedScopes_TwoMessages(HasSubscribers: True, Json: False)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Diagnostics.Tracing.Perf_EventListener

Repro

System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_NoParams

ETL Files

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System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_StringParams

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System.Diagnostics.Tracing.Perf_EventListener.WriteEvent_IntParams

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