[Perf] Windows/x64: 8 Improvements on 4/30/2025 2:49:21 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [f7af766fdd6c56921164f656592f32a2074428be](https://github.com/dotnet/runtime/commit/f7af766fdd6c56921164f656592f32a2074428be)
Compare | [dbb3f759798208ca7463059e0c87c0f45704b62f](https://github.com/dotnet/runtime/commit/dbb3f759798208ca7463059e0c87c0f45704b62f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f7af766fdd6c56921164f656592f32a2074428be...dbb3f759798208ca7463059e0c87c0f45704b62f)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in PerfLabTests.BlockCopyPerf

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[CallBlockCopy - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/PerfLabTests.BlockCopyPerf.CallBlockCopy(numElements%3a%20100).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/BlockCopyPerf.cs#L21-#L23>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 11.38 ns | 7.08 ns | 0.62 | 0.17 | False | | |
|<ul><li>[CallBlockCopy - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/PerfLabTests.BlockCopyPerf.CallBlockCopy(numElements%3a%2010).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/BlockCopyPerf.cs#L21-#L23>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.98 ns | 6.23 ns | 0.62 | 0.15 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/PerfLabTests.BlockCopyPerf_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/PerfLabTests.BlockCopyPerf_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/PerfLabTests.BlockCopyPerf.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 'PerfLabTests.BlockCopyPerf*'
```

<details>

### PerfLabTests.BlockCopyPerf.CallBlockCopy(numElements: 100)

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.BlockCopyPerf.CallBlockCopy(numElements: 10)

#### 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 | [f7af766fdd6c56921164f656592f32a2074428be](https://github.com/dotnet/runtime/commit/f7af766fdd6c56921164f656592f32a2074428be)
Compare | [dbb3f759798208ca7463059e0c87c0f45704b62f](https://github.com/dotnet/runtime/commit/dbb3f759798208ca7463059e0c87c0f45704b62f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f7af766fdd6c56921164f656592f32a2074428be...dbb3f759798208ca7463059e0c87c0f45704b62f)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in System.IO.Tests.Perf_StreamWriter

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[WriteString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.IO.Tests.Perf_StreamWriter.WriteString(writeLength%3a%20100).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime.Extensions/Perf.StreamWriter.cs#L96-#L117>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 353.26 ms | 235.88 ms | 0.67 | 0.15 | False | | |
|<ul><li>[WriteFormat - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.IO.Tests.Perf_StreamWriter.WriteFormat.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime.Extensions/Perf.StreamWriter.cs#L119-#L124>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 42.70 ns | 34.45 ns | 0.81 | 0.18 | False | | |
|<ul><li>[WritePartialCharArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.IO.Tests.Perf_StreamWriter.WritePartialCharArray(writeLength%3a%20100).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime.Extensions/Perf.StreamWriter.cs#L72-#L94>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 354.64 ms | 229.52 ms | 0.65 | 0.01 | False | | |
|<ul><li>[WriteCharArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.IO.Tests.Perf_StreamWriter.WriteCharArray(writeLength%3a%20100).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime.Extensions/Perf.StreamWriter.cs#L49-#L70>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl1RTY/TMBC9V+p/GHpxK7KN6Wo/VGSJpawAwWrRtmKPyCSTxsixq/GEtmL574z7ceEyI0/ee3nzxiMDY2Iw8E4t94mxm35+nK5klKbfkJofSya03TM5Rpoe2qK1dEdk9+Ntfn7FsOZ2Dm+0nqi3w4EXSdsIWjRry8iuw/FMz64u9OWFvl7p2/lMzy9nU61vbq9nN6+1ngv1xCTcRCGqOnJALqkPmX/W/Uk2VG3+TtikskVbp7KzLpwBVQyNW+c/74PtXDX+oxax2zhv2cXwEGtUc1DskLBWBainPnxxoc5DQVNUf7ORj8ifXOJIrrL+g2X77LjNOpZciiGNc2Qml+K4qjnU4uDe5FKcrJpjK07GzLFNhoMX2FD8hRXDEslhKuB973y9kmWXbLtNAd+t79HkSyyipID0hKn3fPcbya5xOCjLF9i2sshJAV6JOEsWCUYjjve7yvc1jkZQlnC/E0mPEBtonBctF9YQezkUpAM5GyIMtVwt513JiRm2sjWMjwBztrmrou+7YP63uz/Okzn4Fhw79miUxIeS9P70fECbesIOA6vJP9hoPqZ+AgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 345.82 ms | 226.84 ms | 0.66 | 0.11 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/System.IO.Tests.Perf_StreamWriter_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/System.IO.Tests.Perf_StreamWriter_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/System.IO.Tests.Perf_StreamWriter_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/System.IO.Tests.Perf_StreamWriter_004.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/System.IO.Tests.Perf_StreamWriter.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.IO.Tests.Perf_StreamWriter*'
```

<details>

### System.IO.Tests.Perf_StreamWriter.WriteString(writeLength: 100)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.IO.Tests.Perf_StreamWriter.WriteFormat

#### ETL Files

#### Histogram

#### JIT Disasms

### System.IO.Tests.Perf_StreamWriter.WritePartialCharArray(writeLength: 100)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.IO.Tests.Perf_StreamWriter.WriteCharArray(writeLength: 100)

#### 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 | [f7af766fdd6c56921164f656592f32a2074428be](https://github.com/dotnet/runtime/commit/f7af766fdd6c56921164f656592f32a2074428be)
Compare | [dbb3f759798208ca7463059e0c87c0f45704b62f](https://github.com/dotnet/runtime/commit/dbb3f759798208ca7463059e0c87c0f45704b62f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f7af766fdd6c56921164f656592f32a2074428be...dbb3f759798208ca7463059e0c87c0f45704b62f)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in MicroBenchmarks.Serializers.Json_ToStream&lt;MyEventsListerViewModel&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[JsonNet_ - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/MicroBenchmarks.Serializers.Json_ToStream(MyEventsListerViewModel).JsonNet_.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/Serializers/Json_ToStream.cs#L51-#L57>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 357.63 μs | 309.43 μs | 0.87 | 0.12 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/MicroBenchmarks.Serializers.Json_ToStream%28MyEventsListerViewModel%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/MicroBenchmarks.Serializers.Json_ToStream%28MyEventsListerViewModel%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 'MicroBenchmarks.Serializers.Json_ToStream&lt;MyEventsListerViewModel&gt;*'
```

<details>

### MicroBenchmarks.Serializers.Json_ToStream&lt;MyEventsListerViewModel&gt;.JsonNet_

#### 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 | [f7af766fdd6c56921164f656592f32a2074428be](https://github.com/dotnet/runtime/commit/f7af766fdd6c56921164f656592f32a2074428be)
Compare | [dbb3f759798208ca7463059e0c87c0f45704b62f](https://github.com/dotnet/runtime/commit/dbb3f759798208ca7463059e0c87c0f45704b62f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f7af766fdd6c56921164f656592f32a2074428be...dbb3f759798208ca7463059e0c87c0f45704b62f)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in System.Text.Json.Serialization.Tests.WriteJson&lt;SimpleStructWithProperties&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[SerializeToStream - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22631/ViperWindows/System.Text.Json.Serialization.Tests.WriteJson(SimpleStructWithProperties).SerializeToStream(Mode%3a%20SourceGen).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Serializer/WriteJson.cs#L89-#L95>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 185.32 ns | 173.86 ns | 0.94 | 0.34 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/System.Text.Json.Serialization.Tests.WriteJson%28SimpleStructWithProperties%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22631/ViperWindows_Improvement/System.Text.Json.Serialization.Tests.WriteJson%28SimpleStructWithProperties%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.Text.Json.Serialization.Tests.WriteJson&lt;SimpleStructWithProperties&gt;*'
```

<details>

### System.Text.Json.Serialization.Tests.WriteJson&lt;SimpleStructWithProperties&gt;.SerializeToStream(Mode: SourceGen)

#### 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	f7af766fdd6c56921164f656592f32a2074428be
Compare	dbb3f759798208ca7463059e0c87c0f45704b62f
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
CallBlockCopy - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	11.38 ns	7.08 ns	0.62	0.17	False
CallBlockCopy - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.98 ns	6.23 ns	0.62	0.15	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
WriteString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	353.26 ms	235.88 ms	0.67	0.15	False
WriteFormat - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	42.70 ns	34.45 ns	0.81	0.18	False
WritePartialCharArray - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	354.64 ms	229.52 ms	0.65	0.01	False
WriteCharArray - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	345.82 ms	226.84 ms	0.66	0.11	False

[Perf] Windows/x64: 8 Improvements on 4/30/2025 2:49:21 PM +00:00 #55009

Description

Run Information

Improvements in PerfLabTests.BlockCopyPerf

Repro

PerfLabTests.BlockCopyPerf.CallBlockCopy(numElements: 100)

ETL Files

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JIT Disasms

PerfLabTests.BlockCopyPerf.CallBlockCopy(numElements: 10)

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Improvements in System.IO.Tests.Perf_StreamWriter

Repro

System.IO.Tests.Perf_StreamWriter.WriteString(writeLength: 100)

ETL Files

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System.IO.Tests.Perf_StreamWriter.WriteFormat

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System.IO.Tests.Perf_StreamWriter.WritePartialCharArray(writeLength: 100)

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System.IO.Tests.Perf_StreamWriter.WriteCharArray(writeLength: 100)

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Improvements in MicroBenchmarks.Serializers.Json_ToStream<MyEventsListerViewModel>

Repro

MicroBenchmarks.Serializers.Json_ToStream<MyEventsListerViewModel>.JsonNet_

ETL Files

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JIT Disasms

Docs

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Improvements in System.Text.Json.Serialization.Tests.WriteJson<SimpleStructWithProperties>

Repro

System.Text.Json.Serialization.Tests.WriteJson<SimpleStructWithProperties>.SerializeToStream(Mode: SourceGen)

ETL Files

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