[Perf] Windows/arm64: 6 Improvements on 6/3/2025 8:09:30 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | Windows 10.0.22621
Queue | SurfaceWindows
Baseline | [ac7097cb4761d9c71e212bf07e4d916d1571c96b](https://github.com/dotnet/runtime/commit/ac7097cb4761d9c71e212bf07e4d916d1571c96b)
Compare | [a16df1d39d1ba6be8a2da69385488bbb558c7958](https://github.com/dotnet/runtime/commit/a16df1d39d1ba6be8a2da69385488bbb558c7958)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ac7097cb4761d9c71e212bf07e4d916d1571c96b...a16df1d39d1ba6be8a2da69385488bbb558c7958)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in System.Memory.ReadOnlySequence

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Slice_Start_And_EndPosition - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Memory.ReadOnlySequence.Slice_Start_And_EndPosition(Segment%3a%20Multiple).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/ReadOnlySequence.cs#L69-#L70>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 10.79 ns | 9.23 ns | 0.86 | 0.16 | False | | |
|<ul><li>[Slice_Start_And_Length - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Memory.ReadOnlySequence.Slice_Start_And_Length(Segment%3a%20Multiple).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/ReadOnlySequence.cs#L66-#L67>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.17 ns | 7.90 ns | 0.86 | 0.15 | False | | |
|<ul><li>[Slice_StartPosition_And_Length - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Memory.ReadOnlySequence.Slice_StartPosition_And_Length(Segment%3a%20Single).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/ReadOnlySequence.cs#L72-#L73>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 6.61 ns | 5.42 ns | 0.82 | 0.17 | False | | |
|<ul><li>[Slice_StartPosition_And_Length - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Memory.ReadOnlySequence.Slice_StartPosition_And_Length(Segment%3a%20Multiple).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/ReadOnlySequence.cs#L72-#L73>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 10.24 ns | 8.56 ns | 0.84 | 0.15 | False | | |
|<ul><li>[Slice_StartPosition - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Memory.ReadOnlySequence.Slice_StartPosition(Segment%3a%20Multiple).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/ReadOnlySequence.cs#L60-#L61>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 10.34 ns | 8.08 ns | 0.78 | 0.16 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_12_2025/refs/heads/main_arm64_Windows%2010.0.22621/SurfaceWindows_Improvement/System.Memory.ReadOnlySequence_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_12_2025/refs/heads/main_arm64_Windows%2010.0.22621/SurfaceWindows_Improvement/System.Memory.ReadOnlySequence_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_12_2025/refs/heads/main_arm64_Windows%2010.0.22621/SurfaceWindows_Improvement/System.Memory.ReadOnlySequence_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_12_2025/refs/heads/main_arm64_Windows%2010.0.22621/SurfaceWindows_Improvement/System.Memory.ReadOnlySequence_004.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_12_2025/refs/heads/main_arm64_Windows%2010.0.22621/SurfaceWindows_Improvement/System.Memory.ReadOnlySequence_005.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_12_2025/refs/heads/main_arm64_Windows%2010.0.22621/SurfaceWindows_Improvement/System.Memory.ReadOnlySequence.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.Memory.ReadOnlySequence*'
```

<details>

### System.Memory.ReadOnlySequence.Slice_Start_And_EndPosition(Segment: Multiple)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.ReadOnlySequence.Slice_Start_And_Length(Segment: Multiple)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.ReadOnlySequence.Slice_StartPosition_And_Length(Segment: Single)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.ReadOnlySequence.Slice_StartPosition_And_Length(Segment: Multiple)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.ReadOnlySequence.Slice_StartPosition(Segment: Multiple)

#### 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 | arm64
OS | Windows 10.0.22621
Queue | SurfaceWindows
Baseline | [ac7097cb4761d9c71e212bf07e4d916d1571c96b](https://github.com/dotnet/runtime/commit/ac7097cb4761d9c71e212bf07e4d916d1571c96b)
Compare | [a16df1d39d1ba6be8a2da69385488bbb558c7958](https://github.com/dotnet/runtime/commit/a16df1d39d1ba6be8a2da69385488bbb558c7958)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ac7097cb4761d9c71e212bf07e4d916d1571c96b...a16df1d39d1ba6be8a2da69385488bbb558c7958)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in System.Threading.Channels.Tests.UnboundedChannelPerfTests

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_arm64_Windows 10.0.22621/SurfaceWindows/System.Threading.Channels.Tests.UnboundedChannelPerfTests.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> | 122.87 ns | 112.86 ns | 0.92 | 0.04 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_12_2025/refs/heads/main_arm64_Windows%2010.0.22621/SurfaceWindows_Improvement/System.Threading.Channels.Tests.UnboundedChannelPerfTests_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_12_2025/refs/heads/main_arm64_Windows%2010.0.22621/SurfaceWindows_Improvement/System.Threading.Channels.Tests.UnboundedChannelPerfTests.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.UnboundedChannelPerfTests*'
```

<details>

### System.Threading.Channels.Tests.UnboundedChannelPerfTests.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	arm64
OS	Windows 10.0.22621
Queue	SurfaceWindows
Baseline	ac7097cb4761d9c71e212bf07e4d916d1571c96b
Compare	a16df1d39d1ba6be8a2da69385488bbb558c7958
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
Slice_Start_And_EndPosition - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	10.79 ns	9.23 ns	0.86	0.16	False
Slice_Start_And_Length - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.17 ns	7.90 ns	0.86	0.15	False
Slice_StartPosition_And_Length - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	6.61 ns	5.42 ns	0.82	0.17	False
Slice_StartPosition_And_Length - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	10.24 ns	8.56 ns	0.84	0.15	False
Slice_StartPosition - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	10.34 ns	8.08 ns	0.78	0.16	False

[Perf] Windows/arm64: 6 Improvements on 6/3/2025 8:09:30 PM +00:00 #57544

Description

Run Information

Improvements in System.Memory.ReadOnlySequence

Repro

System.Memory.ReadOnlySequence.Slice_Start_And_EndPosition(Segment: Multiple)

ETL Files

Histogram

JIT Disasms

System.Memory.ReadOnlySequence.Slice_Start_And_Length(Segment: Multiple)

ETL Files

Histogram

JIT Disasms

System.Memory.ReadOnlySequence.Slice_StartPosition_And_Length(Segment: Single)

ETL Files

Histogram

JIT Disasms

System.Memory.ReadOnlySequence.Slice_StartPosition_And_Length(Segment: Multiple)

ETL Files

Histogram

JIT Disasms

System.Memory.ReadOnlySequence.Slice_StartPosition(Segment: Multiple)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Improvements in System.Threading.Channels.Tests.UnboundedChannelPerfTests

Repro

System.Threading.Channels.Tests.UnboundedChannelPerfTests.ReadAsyncThenWriteAsync

ETL Files

Histogram

JIT Disasms

Docs

Metadata

Metadata

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