[Perf] Windows/x64: 7 Regressions on 8/8/2025 2:34:57 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22621
Queue | TigerWindows
Baseline | [4bbd32d81f97096e9b51ed76ec0e202962e3a115](https://github.com/dotnet/runtime/commit/4bbd32d81f97096e9b51ed76ec0e202962e3a115)
Compare | [5688eabccd295f710484e1f5aa8782acf809491c](https://github.com/dotnet/runtime/commit/5688eabccd295f710484e1f5aa8782acf809491c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4bbd32d81f97096e9b51ed76ec0e202962e3a115...5688eabccd295f710484e1f5aa8782acf809491c)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Buffers.Tests.SearchValuesCharTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IndexOfAnyExcept - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Buffers.Tests.SearchValuesCharTests.IndexOfAnyExcept(Values%3a%20%22abcdefABCDEF0123456789%22).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Buffers/SearchValuesCharTests.cs#L53-#L55>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 8.70 ns | 9.98 ns | 1.15 | 0.11 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Buffers.Tests.SearchValuesCharTests_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Buffers.Tests.SearchValuesCharTests.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.Buffers.Tests.SearchValuesCharTests*'
```

<details>

### System.Buffers.Tests.SearchValuesCharTests.IndexOfAnyExcept(Values: "abcdefABCDEF0123456789")

#### 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 10.0.22621
Queue | TigerWindows
Baseline | [4bbd32d81f97096e9b51ed76ec0e202962e3a115](https://github.com/dotnet/runtime/commit/4bbd32d81f97096e9b51ed76ec0e202962e3a115)
Compare | [5688eabccd295f710484e1f5aa8782acf809491c](https://github.com/dotnet/runtime/commit/5688eabccd295f710484e1f5aa8782acf809491c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4bbd32d81f97096e9b51ed76ec0e202962e3a115...5688eabccd295f710484e1f5aa8782acf809491c)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Memory.Span&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[SequenceCompareToDifferent - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Memory.Span(Int32).SequenceCompareToDifferent(Size%3a%2033).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L58-#L59>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 0.92 ns | 2.13 ns | 2.32 | 0.17 | False | | |
|<ul><li>[SequenceCompareToDifferent - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Memory.Span(Int32).SequenceCompareToDifferent(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L58-#L59>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 0.89 ns | 2.13 ns | 2.38 | 0.16 | False | | |
|<ul><li>[SequenceCompareToDifferent - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Memory.Span(Int32).SequenceCompareToDifferent(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L58-#L59>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 0.91 ns | 2.13 ns | 2.35 | 0.15 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Memory.Span%28Int32%29_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Memory.Span%28Int32%29_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Memory.Span%28Int32%29_003.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Memory.Span%28Int32%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.Memory.Span&lt;Int32&gt;*'
```

<details>

### System.Memory.Span&lt;Int32&gt;.SequenceCompareToDifferent(Size: 33)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Int32&gt;.SequenceCompareToDifferent(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Int32&gt;.SequenceCompareToDifferent(Size: 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 10.0.22621
Queue | TigerWindows
Baseline | [4bbd32d81f97096e9b51ed76ec0e202962e3a115](https://github.com/dotnet/runtime/commit/4bbd32d81f97096e9b51ed76ec0e202962e3a115)
Compare | [5688eabccd295f710484e1f5aa8782acf809491c](https://github.com/dotnet/runtime/commit/5688eabccd295f710484e1f5aa8782acf809491c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4bbd32d81f97096e9b51ed76ec0e202962e3a115...5688eabccd295f710484e1f5aa8782acf809491c)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Globalization.Tests.StringEquality

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Compare_Same_Upper - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Globalization.Tests.StringEquality.Compare_Same_Upper(Count%3a%201024%2c%20Options%3a%20(en-US%2c%20OrdinalIgnoreCase)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringEquality.cs#L65-#L67>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.08 μs | 3.01 μs | 2.78 | 0.02 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Globalization.Tests.StringEquality_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Globalization.Tests.StringEquality.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.Globalization.Tests.StringEquality*'
```

<details>

### System.Globalization.Tests.StringEquality.Compare_Same_Upper(Count: 1024, Options: (en-US, OrdinalIgnoreCase))

#### 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 10.0.22621
Queue | TigerWindows
Baseline | [4bbd32d81f97096e9b51ed76ec0e202962e3a115](https://github.com/dotnet/runtime/commit/4bbd32d81f97096e9b51ed76ec0e202962e3a115)
Compare | [5688eabccd295f710484e1f5aa8782acf809491c](https://github.com/dotnet/runtime/commit/5688eabccd295f710484e1f5aa8782acf809491c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4bbd32d81f97096e9b51ed76ec0e202962e3a115...5688eabccd295f710484e1f5aa8782acf809491c)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Perf_Convert

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ToBase64CharArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Perf_Convert.ToBase64CharArray(binaryDataSize%3a%201024%2c%20formattingOptions%3a%20InsertLineBreaks).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime.Extensions/Perf.Convert.cs#L48-#L53>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.68 μs | 1.89 μs | 1.13 | 0.08 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Perf_Convert_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Perf_Convert.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.Perf_Convert*'
```

<details>

### System.Perf_Convert.ToBase64CharArray(binaryDataSize: 1024, formattingOptions: InsertLineBreaks)

#### 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 10.0.22621
Queue | TigerWindows
Baseline | [4bbd32d81f97096e9b51ed76ec0e202962e3a115](https://github.com/dotnet/runtime/commit/4bbd32d81f97096e9b51ed76ec0e202962e3a115)
Compare | [5688eabccd295f710484e1f5aa8782acf809491c](https://github.com/dotnet/runtime/commit/5688eabccd295f710484e1f5aa8782acf809491c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4bbd32d81f97096e9b51ed76ec0e202962e3a115...5688eabccd295f710484e1f5aa8782acf809491c)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.IO.Tests.Perf_Path

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[GetFileName - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.IO.Tests.Perf_Path.GetFileName.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime.Extensions/Perf.Path.cs#L43-#L45>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 22.86 ns | 25.06 ns | 1.10 | 0.06 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.IO.Tests.Perf_Path_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_12_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.IO.Tests.Perf_Path.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_Path*'
```

<details>

### System.IO.Tests.Perf_Path.GetFileName

#### 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 10.0.22621
Queue	TigerWindows
Baseline	4bbd32d81f97096e9b51ed76ec0e202962e3a115
Compare	5688eabccd295f710484e1f5aa8782acf809491c
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
SequenceCompareToDifferent - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	0.92 ns	2.13 ns	2.32	0.17	False
SequenceCompareToDifferent - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	0.89 ns	2.13 ns	2.38	0.16	False
SequenceCompareToDifferent - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	0.91 ns	2.13 ns	2.35	0.15	False

[Perf] Windows/x64: 7 Regressions on 8/8/2025 2:34:57 PM +00:00 #118658

Description

Run Information

Regressions in System.Buffers.Tests.SearchValuesCharTests

Repro

System.Buffers.Tests.SearchValuesCharTests.IndexOfAnyExcept(Values: "abcdefABCDEF0123456789")

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Memory.Span<Int32>

Repro

System.Memory.Span<Int32>.SequenceCompareToDifferent(Size: 33)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Int32>.SequenceCompareToDifferent(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Int32>.SequenceCompareToDifferent(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Globalization.Tests.StringEquality

Repro

System.Globalization.Tests.StringEquality.Compare_Same_Upper(Count: 1024, Options: (en-US, OrdinalIgnoreCase))

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Perf_Convert

Repro

System.Perf_Convert.ToBase64CharArray(binaryDataSize: 1024, formattingOptions: InsertLineBreaks)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.IO.Tests.Perf_Path

Repro

System.IO.Tests.Perf_Path.GetFileName

ETL Files

Histogram

JIT Disasms

Docs

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