[Perf] Windows/x64: 5 Regressions on 11/3/2025 7:09:47 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [9215568cdca8359762089eb2c30f97f74f116b33](https://github.com/dotnet/runtime/commit/9215568cdca8359762089eb2c30f97f74f116b33)
Compare | [60d14f8d3fb74db52237e9d4dc31c332a23aa3f7](https://github.com/dotnet/runtime/commit/60d14f8d3fb74db52237e9d4dc31c332a23aa3f7)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9215568cdca8359762089eb2c30f97f74f116b33...60d14f8d3fb74db52237e9d4dc31c332a23aa3f7)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Threading.Tests.Perf_SemaphoreSlim

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ReleaseWaitAsync - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.Threading.Tests.Perf_SemaphoreSlim.ReleaseWaitAsync.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Threading/Perf.SemaphoreSlim.cs#L24-#L29>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 19.99 ns | 26.86 ns | 1.34 | 0.27 | False | | |
|<ul><li>[ReleaseWait - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.Threading.Tests.Perf_SemaphoreSlim.ReleaseWait.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Threading/Perf.SemaphoreSlim.cs#L17-#L22>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 26.50 ns | 33.51 ns | 1.26 | 0.33 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_04_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Regression/System.Threading.Tests.Perf_SemaphoreSlim_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_04_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Regression/System.Threading.Tests.Perf_SemaphoreSlim_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_04_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Regression/System.Threading.Tests.Perf_SemaphoreSlim.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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Threading.Tests.Perf_SemaphoreSlim*'
```

<details>

### System.Threading.Tests.Perf_SemaphoreSlim.ReleaseWaitAsync

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Threading.Tests.Perf_SemaphoreSlim.ReleaseWait

#### 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 | Windows 10.0.22631
Queue | ViperWindows
Baseline | [9215568cdca8359762089eb2c30f97f74f116b33](https://github.com/dotnet/runtime/commit/9215568cdca8359762089eb2c30f97f74f116b33)
Compare | [60d14f8d3fb74db52237e9d4dc31c332a23aa3f7](https://github.com/dotnet/runtime/commit/60d14f8d3fb74db52237e9d4dc31c332a23aa3f7)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9215568cdca8359762089eb2c30f97f74f116b33...60d14f8d3fb74db52237e9d4dc31c332a23aa3f7)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ReadAsyncThenWriteAsync - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests.ReadAsyncThenWriteAsync.html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 53.12 ns | 66.79 ns | 1.26 | 0.52 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_04_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Regression/System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_04_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Regression/System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests.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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests*'
```

<details>

### System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests.ReadAsyncThenWriteAsync

#### 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 | Windows 10.0.22631
Queue | ViperWindows
Baseline | [9215568cdca8359762089eb2c30f97f74f116b33](https://github.com/dotnet/runtime/commit/9215568cdca8359762089eb2c30f97f74f116b33)
Compare | [60d14f8d3fb74db52237e9d4dc31c332a23aa3f7](https://github.com/dotnet/runtime/commit/60d14f8d3fb74db52237e9d4dc31c332a23aa3f7)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9215568cdca8359762089eb2c30f97f74f116b33...60d14f8d3fb74db52237e9d4dc31c332a23aa3f7)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.TryAddGiventSize&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ConcurrentDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.Collections.TryAddGiventSize(String).ConcurrentDictionary(Count%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Add/TryAddGivenSize.cs#L38-#L46>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 24.35 μs | 26.11 μs | 1.07 | 0.07 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_04_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Regression/System.Collections.TryAddGiventSize%28String%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_04_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Regression/System.Collections.TryAddGiventSize%28String%29.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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.TryAddGiventSize<String>*'
```

<details>

### System.Collections.TryAddGiventSize&lt;String&gt;.ConcurrentDictionary(Count: 512)

#### 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 | Windows 10.0.22631
Queue | ViperWindows
Baseline | [9215568cdca8359762089eb2c30f97f74f116b33](https://github.com/dotnet/runtime/commit/9215568cdca8359762089eb2c30f97f74f116b33)
Compare | [60d14f8d3fb74db52237e9d4dc31c332a23aa3f7](https://github.com/dotnet/runtime/commit/60d14f8d3fb74db52237e9d4dc31c332a23aa3f7)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9215568cdca8359762089eb2c30f97f74f116b33...60d14f8d3fb74db52237e9d4dc31c332a23aa3f7)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Threading.Channels.Tests.BoundedChannelPerfTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ReadAsyncThenWriteAsync - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.Threading.Channels.Tests.BoundedChannelPerfTests.ReadAsyncThenWriteAsync.html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 62.85 ns | 79.75 ns | 1.27 | 0.43 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_04_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Regression/System.Threading.Channels.Tests.BoundedChannelPerfTests_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_04_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Regression/System.Threading.Channels.Tests.BoundedChannelPerfTests.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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Threading.Channels.Tests.BoundedChannelPerfTests*'
```

<details>

### System.Threading.Channels.Tests.BoundedChannelPerfTests.ReadAsyncThenWriteAsync

#### 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	Windows 10.0.22631
Queue	ViperWindows
Baseline	9215568cdca8359762089eb2c30f97f74f116b33
Compare	60d14f8d3fb74db52237e9d4dc31c332a23aa3f7
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
ReleaseWaitAsync - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	19.99 ns	26.86 ns	1.34	0.27	False
ReleaseWait - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	26.50 ns	33.51 ns	1.26	0.33	False

[Perf] Windows/x64: 5 Regressions on 11/3/2025 7:09:47 AM +00:00 #64673

Description

Run Information

Regressions in System.Threading.Tests.Perf_SemaphoreSlim

Repro

System.Threading.Tests.Perf_SemaphoreSlim.ReleaseWaitAsync

ETL Files

Histogram

JIT Disasms

System.Threading.Tests.Perf_SemaphoreSlim.ReleaseWait

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests

Repro

System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests.ReadAsyncThenWriteAsync

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.TryAddGiventSize<String>

Repro

System.Collections.TryAddGiventSize<String>.ConcurrentDictionary(Count: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Threading.Channels.Tests.BoundedChannelPerfTests

Repro

System.Threading.Channels.Tests.BoundedChannelPerfTests.ReadAsyncThenWriteAsync

ETL Files

Histogram

JIT Disasms

Docs

Metadata

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