[Perf] Windows/arm64: 11 Improvements on 6/3/2025 11:51:36 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | Windows 10.0.22621
Queue | SurfaceWindows
Baseline | [34aac9316755b16d7b92c26f0f7d8b435fe1ff97](https://github.com/dotnet/runtime/commit/34aac9316755b16d7b92c26f0f7d8b435fe1ff97)
Compare | [fcbc76add236b383b78d789c7fab7598f6405be3](https://github.com/dotnet/runtime/commit/fcbc76add236b383b78d789c7fab7598f6405be3)
Diff | [Diff](https://github.com/dotnet/runtime/compare/34aac9316755b16d7b92c26f0f7d8b435fe1ff97...fcbc76add236b383b78d789c7fab7598f6405be3)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in System.Linq.Tests.Perf_Enumerable

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[WhereLast_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input%3a%20IEnumerable).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L66-#L68>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 217.27 ns | 205.08 ns | 0.94 | 0.02 | False | | |
|<ul><li>[Concat_Once - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Linq.Tests.Perf_Enumerable.Concat_Once(input%3a%20IEnumerable).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L295-#L297>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.42 μs | 814.04 ns | 0.57 | 0.00 | False | | |
|<ul><li>[WhereAny_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L106-#L108>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 84.44 ns | 79.28 ns | 0.94 | 0.11 | False | | |
|<ul><li>[SelectToArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Linq.Tests.Perf_Enumerable.SelectToArray(input%3a%20List).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L250-#L252>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 160.47 ns | 127.52 ns | 0.79 | 0.03 | False | | |
|<ul><li>[WhereLast_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input%3a%20List).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L66-#L68>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 32.70 ns | 20.64 ns | 0.63 | 0.22 | False | | |
|<ul><li>[Contains_ElementNotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Linq.Tests.Perf_Enumerable.Contains_ElementNotFound(input%3a%20IEnumerable).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L289-#L291>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 357.31 ns | 193.88 ns | 0.54 | 0.01 | False | | |
|<ul><li>[CastToBaseClass - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Linq.Tests.Perf_Enumerable.CastToBaseClass(input%3a%20IEnumerable).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L157-#L159>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 3.83 μs | 2.23 μs | 0.58 | 0.02 | False | | |
|<ul><li>[Concat_TenTimes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Linq.Tests.Perf_Enumerable.Concat_TenTimes(input%3a%20IEnumerable).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L299-#L309>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 7.91 μs | 6.55 μs | 0.83 | 0.00 | False | | |
|<ul><li>[EmptyTakeSelectToArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Linq.Tests.Perf_Enumerable.EmptyTakeSelectToArray.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L406-#L407>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 18.29 ns | 5.70 ns | 0.31 | 0.32 | 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.Linq.Tests.Perf_Enumerable_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.Linq.Tests.Perf_Enumerable_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.Linq.Tests.Perf_Enumerable_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.Linq.Tests.Perf_Enumerable_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.Linq.Tests.Perf_Enumerable_005.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.Linq.Tests.Perf_Enumerable_006.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.Linq.Tests.Perf_Enumerable_007.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.Linq.Tests.Perf_Enumerable_008.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.Linq.Tests.Perf_Enumerable_009.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.Linq.Tests.Perf_Enumerable.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.Linq.Tests.Perf_Enumerable*'
```

<details>

### System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input: IEnumerable)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.Concat_Once(input: IEnumerable)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: Array)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.SelectToArray(input: List)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input: List)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.Contains_ElementNotFound(input: IEnumerable)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.CastToBaseClass(input: IEnumerable)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.Concat_TenTimes(input: IEnumerable)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.EmptyTakeSelectToArray

#### 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 | [f313e8d075e5900f7fcb8192aad296af5e5bb162](https://github.com/dotnet/runtime/commit/f313e8d075e5900f7fcb8192aad296af5e5bb162)
Compare | [fcbc76add236b383b78d789c7fab7598f6405be3](https://github.com/dotnet/runtime/commit/fcbc76add236b383b78d789c7fab7598f6405be3)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f313e8d075e5900f7fcb8192aad296af5e5bb162...fcbc76add236b383b78d789c7fab7598f6405be3)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements 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_arm64_Windows 10.0.22621/SurfaceWindows/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> | 116.04 ns | 88.39 ns | 0.76 | 0.02 | 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.BoundedChannelPerfTests_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.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>


---


### Run Information

Name | Value
-- | --
Architecture | arm64
OS | Windows 10.0.22621
Queue | SurfaceWindows
Baseline | [24118056f04be70203d417f18c0e60cc08f14c31](https://github.com/dotnet/runtime/commit/24118056f04be70203d417f18c0e60cc08f14c31)
Compare | [09cb359c749d54177897eafb7bc770f0f1f6b629](https://github.com/dotnet/runtime/commit/09cb359c749d54177897eafb7bc770f0f1f6b629)
Diff | [Diff](https://github.com/dotnet/runtime/compare/24118056f04be70203d417f18c0e60cc08f14c31...09cb359c749d54177897eafb7bc770f0f1f6b629)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in System.Xml.Linq.Perf_XDocument

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[GetRootElement - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.22621/SurfaceWindows/System.Xml.Linq.Perf_XDocument.GetRootElement.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Xml.Linq/Perf.XDocument.cs#L43-#L44>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 4.74 ns | 2.77 ns | 0.58 | 0.17 | 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.Xml.Linq.Perf_XDocument_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.Xml.Linq.Perf_XDocument.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.Xml.Linq.Perf_XDocument*'
```

<details>

### System.Xml.Linq.Perf_XDocument.GetRootElement

#### 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	34aac9316755b16d7b92c26f0f7d8b435fe1ff97
Compare	fcbc76add236b383b78d789c7fab7598f6405be3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
WhereLast_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	217.27 ns	205.08 ns	0.94	0.02	False
Concat_Once - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.42 μs	814.04 ns	0.57	0.00	False
WhereAny_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	84.44 ns	79.28 ns	0.94	0.11	False
SelectToArray - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	160.47 ns	127.52 ns	0.79	0.03	False
WhereLast_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	32.70 ns	20.64 ns	0.63	0.22	False
Contains_ElementNotFound - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	357.31 ns	193.88 ns	0.54	0.01	False
CastToBaseClass - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	3.83 μs	2.23 μs	0.58	0.02	False
Concat_TenTimes - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	7.91 μs	6.55 μs	0.83	0.00	False
EmptyTakeSelectToArray - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	18.29 ns	5.70 ns	0.31	0.32	False

[Perf] Windows/arm64: 11 Improvements on 6/3/2025 11:51:36 PM +00:00 #57545

Description

Run Information

Improvements in System.Linq.Tests.Perf_Enumerable

Repro

System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input: IEnumerable)

ETL Files

Histogram

JIT Disasms

System.Linq.Tests.Perf_Enumerable.Concat_Once(input: IEnumerable)

ETL Files

Histogram

JIT Disasms

System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: Array)

ETL Files

Histogram

JIT Disasms

System.Linq.Tests.Perf_Enumerable.SelectToArray(input: List)

ETL Files

Histogram

JIT Disasms

System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input: List)

ETL Files

Histogram

JIT Disasms

System.Linq.Tests.Perf_Enumerable.Contains_ElementNotFound(input: IEnumerable)

ETL Files

Histogram

JIT Disasms

System.Linq.Tests.Perf_Enumerable.CastToBaseClass(input: IEnumerable)

ETL Files

Histogram

JIT Disasms

System.Linq.Tests.Perf_Enumerable.Concat_TenTimes(input: IEnumerable)

ETL Files

Histogram

JIT Disasms

System.Linq.Tests.Perf_Enumerable.EmptyTakeSelectToArray

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Improvements in System.Threading.Channels.Tests.BoundedChannelPerfTests

Repro

System.Threading.Channels.Tests.BoundedChannelPerfTests.ReadAsyncThenWriteAsync

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Improvements in System.Xml.Linq.Perf_XDocument

Repro

System.Xml.Linq.Perf_XDocument.GetRootElement

ETL Files

Histogram

JIT Disasms

Docs

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