[Perf] Linux/x64: 6 Regressions on 5/11/2025 3:44:08 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [33b5215c15b16ad9e2738c325f6b562702c308d3](https://github.com/dotnet/runtime/commit/33b5215c15b16ad9e2738c325f6b562702c308d3)
Compare | [8b80947425177e7b500e13ec66d1b9936a67e5a5](https://github.com/dotnet/runtime/commit/8b80947425177e7b500e13ec66d1b9936a67e5a5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/33b5215c15b16ad9e2738c325f6b562702c308d3...8b80947425177e7b500e13ec66d1b9936a67e5a5)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Buffers.Text.Tests.Utf8ParserTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[TryParseUInt32Hex - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt32Hex(value%3a%203039).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Buffers/Utf8ParserTests.cs#L57-#L59>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 3.27 ns | 4.33 ns | 1.32 | 0.08 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Buffers.Text.Tests.Utf8ParserTests_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Buffers.Text.Tests.Utf8ParserTests.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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Buffers.Text.Tests.Utf8ParserTests*'
```

<details>

### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt32Hex(value: 3039)

#### 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 | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [33b5215c15b16ad9e2738c325f6b562702c308d3](https://github.com/dotnet/runtime/commit/33b5215c15b16ad9e2738c325f6b562702c308d3)
Compare | [8b80947425177e7b500e13ec66d1b9936a67e5a5](https://github.com/dotnet/runtime/commit/8b80947425177e7b500e13ec66d1b9936a67e5a5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/33b5215c15b16ad9e2738c325f6b562702c308d3...8b80947425177e7b500e13ec66d1b9936a67e5a5)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Globalization.Tests.StringSearch

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IsSuffix_DifferentLastChar - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Globalization.Tests.StringSearch.IsSuffix_DifferentLastChar(Options%3a%20(en-US%2c%20IgnoreCase%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L98-#L100>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 7.20 ns | 9.57 ns | 1.33 | 0.06 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringSearch_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringSearch.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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Globalization.Tests.StringSearch*'
```

<details>

### System.Globalization.Tests.StringSearch.IsSuffix_DifferentLastChar(Options: (en-US, IgnoreCase, False))

#### 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 | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [33b5215c15b16ad9e2738c325f6b562702c308d3](https://github.com/dotnet/runtime/commit/33b5215c15b16ad9e2738c325f6b562702c308d3)
Compare | [8b80947425177e7b500e13ec66d1b9936a67e5a5](https://github.com/dotnet/runtime/commit/8b80947425177e7b500e13ec66d1b9936a67e5a5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/33b5215c15b16ad9e2738c325f6b562702c308d3...8b80947425177e7b500e13ec66d1b9936a67e5a5)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.IndexerSet&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Dictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.IndexerSet(Int32).Dictionary(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Indexer/IndexerSet.cs#L86-#L94>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.49 μs | 3.37 μs | 1.35 | 0.13 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.IndexerSet%28Int32%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.IndexerSet%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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.IndexerSet&lt;Int32&gt;*'
```

<details>

### System.Collections.IndexerSet&lt;Int32&gt;.Dictionary(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 | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [33b5215c15b16ad9e2738c325f6b562702c308d3](https://github.com/dotnet/runtime/commit/33b5215c15b16ad9e2738c325f6b562702c308d3)
Compare | [8b80947425177e7b500e13ec66d1b9936a67e5a5](https://github.com/dotnet/runtime/commit/8b80947425177e7b500e13ec66d1b9936a67e5a5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/33b5215c15b16ad9e2738c325f6b562702c308d3...8b80947425177e7b500e13ec66d1b9936a67e5a5)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.Tests.Perf_BitArray

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[BitArrayAnd - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.Tests.Perf_BitArray.BitArrayAnd(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L99-#L100>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.63 ns | 2.90 ns | 1.78 | 0.06 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Tests.Perf_BitArray_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Tests.Perf_BitArray.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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.Tests.Perf_BitArray*'
```

<details>

### System.Collections.Tests.Perf_BitArray.BitArrayAnd(Size: 4)

#### 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 | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [33b5215c15b16ad9e2738c325f6b562702c308d3](https://github.com/dotnet/runtime/commit/33b5215c15b16ad9e2738c325f6b562702c308d3)
Compare | [8b80947425177e7b500e13ec66d1b9936a67e5a5](https://github.com/dotnet/runtime/commit/8b80947425177e7b500e13ec66d1b9936a67e5a5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/33b5215c15b16ad9e2738c325f6b562702c308d3...8b80947425177e7b500e13ec66d1b9936a67e5a5)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.Perf_Frozen&lt;Int16&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Contains_True - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.Perf_Frozen(Int16).Contains_True(Count%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Frozen/Perf_Frozen.cs#L96-#L105>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.29 μs | 1.51 μs | 1.17 | 0.06 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Perf_Frozen%28Int16%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Perf_Frozen%28Int16%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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.Perf_Frozen&lt;Int16&gt;*'
```

<details>

### System.Collections.Perf_Frozen&lt;Int16&gt;.Contains_True(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 | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [33b5215c15b16ad9e2738c325f6b562702c308d3](https://github.com/dotnet/runtime/commit/33b5215c15b16ad9e2738c325f6b562702c308d3)
Compare | [8b80947425177e7b500e13ec66d1b9936a67e5a5](https://github.com/dotnet/runtime/commit/8b80947425177e7b500e13ec66d1b9936a67e5a5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/33b5215c15b16ad9e2738c325f6b562702c308d3...8b80947425177e7b500e13ec66d1b9936a67e5a5)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Linq.Tests.Perf_Enumerable

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Where - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Linq.Tests.Perf_Enumerable.Where(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L48-#L50>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 183.92 ns | 240.47 ns | 1.31 | 0.07 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Linq.Tests.Perf_Enumerable_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_20_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Linq.Tests.Perf_Enumerable*'
```

<details>

### System.Linq.Tests.Perf_Enumerable.Where(input: Array)

#### 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	ubuntu 22.04
Queue	TigerUbuntu
Baseline	33b5215c15b16ad9e2738c325f6b562702c308d3
Compare	8b80947425177e7b500e13ec66d1b9936a67e5a5
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

[Perf] Linux/x64: 6 Regressions on 5/11/2025 3:44:08 PM +00:00 #55714

Description

Run Information

Regressions in System.Buffers.Text.Tests.Utf8ParserTests

Repro

System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt32Hex(value: 3039)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Globalization.Tests.StringSearch

Repro

System.Globalization.Tests.StringSearch.IsSuffix_DifferentLastChar(Options: (en-US, IgnoreCase, False))

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.IndexerSet<Int32>

Repro

System.Collections.IndexerSet<Int32>.Dictionary(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.Tests.Perf_BitArray

Repro

System.Collections.Tests.Perf_BitArray.BitArrayAnd(Size: 4)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.Perf_Frozen<Int16>

Repro

System.Collections.Perf_Frozen<Int16>.Contains_True(Count: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Linq.Tests.Perf_Enumerable

Repro

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

ETL Files

Histogram

JIT Disasms

Docs

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