[Perf] Linux/x64: 17 Regressions on 7/9/2025 4:18:51 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Buffers.Text.Tests.Utf8FormatterTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[FormatterDecimal - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Buffers.Text.Tests.Utf8FormatterTests.FormatterDecimal(value%3a%20123456.789).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Buffers/Utf8FormatterTests.cs#L46-#L49>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 39.49 ns | 79.29 ns | 2.01 | 0.07 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Buffers.Text.Tests.Utf8FormatterTests_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Buffers.Text.Tests.Utf8FormatterTests.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.Utf8FormatterTests*'
```

<details>

### System.Buffers.Text.Tests.Utf8FormatterTests.FormatterDecimal(value: 123456.789)

#### 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 | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
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>[BinarySearch - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Memory.Span(Int32).BinarySearch(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L107-#L108>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 3.84 ns | 4.86 ns | 1.27 | 0.02 | False | | |
|<ul><li>[EndsWith - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Memory.Span(Int32).EndsWith(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L64-#L65>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 16.82 ns | 18.56 ns | 1.10 | 0.07 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.Span%28Int32%29_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.Span%28Int32%29_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Memory.Span&lt;Int32&gt;*'
```

<details>

### System.Memory.Span&lt;Int32&gt;.BinarySearch(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Int32&gt;.EndsWith(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 | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Memory.ReadOnlySpan

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IndexOfString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Memory.ReadOnlySpan.IndexOfString(input%3a%20%22StrIng%22%2c%20value%3a%20%22string%22%2c%20comparisonType%3a%20OrdinalIgnoreCase).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/ReadOnlySpan.cs#L45-#L65>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 10.99 ns | 12.21 ns | 1.11 | 0.10 | False | | |
|<ul><li>[IndexOfString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Memory.ReadOnlySpan.IndexOfString(input%3a%20%22Hello%20Worldbbbbbbbbbbbbbbcbbbbbbbbbbbbbbbbbbba!%22%2c%20value%3a%20%22y%22%2c%20comparisonType%3a%20Ordinal).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/ReadOnlySpan.cs#L45-#L65>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 6.32 ns | 8.40 ns | 1.33 | 0.08 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.ReadOnlySpan_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.ReadOnlySpan_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.ReadOnlySpan.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.Memory.ReadOnlySpan*'
```

<details>

### System.Memory.ReadOnlySpan.IndexOfString(input: "StrIng", value: "string", comparisonType: OrdinalIgnoreCase)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.ReadOnlySpan.IndexOfString(input: "Hello Worldbbbbbbbbbbbbbbcbbbbbbbbbbbbbbbbbbba!", value: "y", comparisonType: Ordinal)

#### 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 | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Tests.Perf_Int16

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ToString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Tests.Perf_Int16.ToString(value%3a%20-32768).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.Int16.cs#L34-#L37>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 12.29 ns | 14.97 ns | 1.22 | 0.17 | False | | |
|<ul><li>[ToString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Tests.Perf_Int16.ToString(value%3a%2032767).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.Int16.cs#L34-#L37>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 10.03 ns | 11.32 ns | 1.13 | 0.10 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_Int16_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_Int16_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_Int16.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.Tests.Perf_Int16*'
```

<details>

### System.Tests.Perf_Int16.ToString(value: -32768)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_Int16.ToString(value: 32767)

#### 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 | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.ContainsFalse&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ImmutableArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.ContainsFalse(Int32).ImmutableArray(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Contains/ContainsFalse.cs#L167-#L176>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 16.04 μs | 20.13 μs | 1.26 | 0.28 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.ContainsFalse%28Int32%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.ContainsFalse%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.ContainsFalse&lt;Int32&gt;*'
```

<details>

### System.Collections.ContainsFalse&lt;Int32&gt;.ImmutableArray(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 | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in PerfLabTests.CastingPerf2.CastingPerf

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ObjFooIsObj - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/PerfLabTests.CastingPerf2.CastingPerf.ObjFooIsObj.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/CastingPerf2.cs#L104-#L109>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 398.12 μs | 482.10 μs | 1.21 | 0.04 | False | | |
|<ul><li>[IFooFooIsIFoo - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/PerfLabTests.CastingPerf2.CastingPerf.IFooFooIsIFoo.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/CastingPerf2.cs#L138-#L143>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 403.25 μs | 481.59 μs | 1.19 | 0.01 | False | | |
|<ul><li>[FooObjIsNull - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/PerfLabTests.CastingPerf2.CastingPerf.FooObjIsNull.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/CastingPerf2.cs#L121-#L126>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 265.86 μs | 321.52 μs | 1.21 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/PerfLabTests.CastingPerf2.CastingPerf_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/PerfLabTests.CastingPerf2.CastingPerf_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/PerfLabTests.CastingPerf2.CastingPerf_003.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/PerfLabTests.CastingPerf2.CastingPerf.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 'PerfLabTests.CastingPerf2.CastingPerf*'
```

<details>

### PerfLabTests.CastingPerf2.CastingPerf.ObjFooIsObj

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.CastingPerf2.CastingPerf.IFooFooIsIFoo

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.CastingPerf2.CastingPerf.FooObjIsNull

#### 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 | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Tests.Perf_UInt64

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[TryParseHex - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Tests.Perf_UInt64.TryParseHex(value%3a%20%22FFFFFFFFFFFFFFFF%22).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.UInt64.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> | 20.57 ns | 39.25 ns | 1.91 | 0.02 | False | | |
|<ul><li>[TryParseHex - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Tests.Perf_UInt64.TryParseHex(value%3a%20%223039%22).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.UInt64.cs#L53-#L55>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl1RwY7TMBC9V+o/DLk4Fdkm2zaoBFkClhWL0EqrbYEjMvGkMXLsyp7sNmL5d+wmvXCZ0Yxnnt97o5GA0BNweM92gyfslvtQ++UDuubnty+G3myWezc8COfxDk/pk9A9VpCsi/XbZMHezWc6YIiG0AUQKQhJdZiuilV5VZRX1+W+2FbFplpdL7frTbktV6+LoiqKxbTp8GjDIpOWDFLuehP3L7i/nDB1G98dNj5vUUifd0KZy0BtTaMO8efBiE7V6R92Y7uj0oKUNfdWIquAkUKHkmXAHnvzVRkZm2HaWfY3EvmMdKc8WadqoT8JEj8UtRFHOOWt8Wn0iMeQjVL5OWZn9jyGbKLKx5RNxPiYFvPZCxyd/Y01wQ6dQp/Bx15puQ9idyS6Ywbfo7M8un9jgwvoHtH3mj48oRMHnM/y/AWe2yBkQoBXAZyCFx6ShOztqda9xCSBPIfbU4DUCLaBRumApcwBbB8OBf68HAk5NDJcLfpdt8IRPAfVkI4D/ELzVFvdd4b/T3cY+56feYc5UqSRs2AfBqeHqbxH4XuHHRpii3/xu3/ybwIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 6.93 ns | 9.02 ns | 1.30 | 0.07 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_UInt64_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_UInt64_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_UInt64.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.Tests.Perf_UInt64*'
```

<details>

### System.Tests.Perf_UInt64.TryParseHex(value: "FFFFFFFFFFFFFFFF")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt64.TryParseHex(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 | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
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>[ToBase64String - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Perf_Convert.ToBase64String(formattingOptions%3a%20InsertLineBreaks).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime.Extensions/Perf.Convert.cs#L58-#L63>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.26 μs | 1.50 μs | 1.19 | 0.12 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Perf_Convert_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Perf_Convert*'
```

<details>

### System.Perf_Convert.ToBase64String(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 | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.IterateForEachNonGeneric&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ArrayList - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.IterateForEachNonGeneric(Int32).ArrayList(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Iterate/IterateForEachNonGeneric.cs#L28-#L36>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.27 μs | 1.48 μs | 1.16 | 0.06 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.IterateForEachNonGeneric%28Int32%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.IterateForEachNonGeneric%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.IterateForEachNonGeneric&lt;Int32&gt;*'
```

<details>

### System.Collections.IterateForEachNonGeneric&lt;Int32&gt;.ArrayList(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 | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Memory.Span&lt;Byte&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[SequenceEqual - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Memory.Span(Byte).SequenceEqual(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L52-#L53>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 8.50 ns | 10.40 ns | 1.22 | 0.02 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.Span%28Byte%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.Span%28Byte%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.Memory.Span&lt;Byte&gt;*'
```

<details>

### System.Memory.Span&lt;Byte&gt;.SequenceEqual(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 | [baf534c8a3307ac0505ac67f37a6cc92fba16b70](https://github.com/dotnet/runtime/commit/baf534c8a3307ac0505ac67f37a6cc92fba16b70)
Compare | [ceede7f76f49c84c20d3955a2db05065fa8e778d](https://github.com/dotnet/runtime/commit/ceede7f76f49c84c20d3955a2db05065fa8e778d)
Diff | [Diff](https://github.com/dotnet/runtime/compare/baf534c8a3307ac0505ac67f37a6cc92fba16b70...ceede7f76f49c84c20d3955a2db05065fa8e778d)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.ContainsKeyTrue&lt;Int32, 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.ContainsKeyTrue(Int32%2c%20Int32).Dictionary(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Contains/ContainsKeyTrue.cs#L50-#L59>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.69 μs | 2.54 μs | 1.50 | 0.11 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.ContainsKeyTrue%28Int32%2C%20Int32%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_15_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.ContainsKeyTrue%28Int32%2C%20Int32%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.ContainsKeyTrue&lt;Int32, Int32&gt;*'
```

<details>

### System.Collections.ContainsKeyTrue&lt;Int32, 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>

Name	Value
Architecture	x64
OS	ubuntu 22.04
Queue	TigerUbuntu
Baseline	baf534c8a3307ac0505ac67f37a6cc92fba16b70
Compare	ceede7f76f49c84c20d3955a2db05065fa8e778d
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
BinarySearch - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	3.84 ns	4.86 ns	1.27	0.02	False
EndsWith - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	16.82 ns	18.56 ns	1.10	0.07	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
IndexOfString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	10.99 ns	12.21 ns	1.11	0.10	False
IndexOfString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	6.32 ns	8.40 ns	1.33	0.08	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
ToString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	12.29 ns	14.97 ns	1.22	0.17	False
ToString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	10.03 ns	11.32 ns	1.13	0.10	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
ObjFooIsObj - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	398.12 μs	482.10 μs	1.21	0.04	False
IFooFooIsIFoo - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	403.25 μs	481.59 μs	1.19	0.01	False
FooObjIsNull - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	265.86 μs	321.52 μs	1.21	0.01	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
TryParseHex - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	20.57 ns	39.25 ns	1.91	0.02	False
TryParseHex - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	6.93 ns	9.02 ns	1.30	0.07	False

[Perf] Linux/x64: 17 Regressions on 7/9/2025 4:18:51 PM +00:00 #59229

Description

Run Information

Regressions in System.Buffers.Text.Tests.Utf8FormatterTests

Repro

System.Buffers.Text.Tests.Utf8FormatterTests.FormatterDecimal(value: 123456.789)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Memory.Span<Int32>

Repro

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

ETL Files

Histogram

JIT Disasms

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

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Memory.ReadOnlySpan

Repro

System.Memory.ReadOnlySpan.IndexOfString(input: "StrIng", value: "string", comparisonType: OrdinalIgnoreCase)

ETL Files

Histogram

JIT Disasms

System.Memory.ReadOnlySpan.IndexOfString(input: "Hello Worldbbbbbbbbbbbbbbcbbbbbbbbbbbbbbbbbbba!", value: "y", comparisonType: Ordinal)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Tests.Perf_Int16

Repro

System.Tests.Perf_Int16.ToString(value: -32768)

ETL Files

Histogram

JIT Disasms

System.Tests.Perf_Int16.ToString(value: 32767)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.ContainsFalse<Int32>

Repro

System.Collections.ContainsFalse<Int32>.ImmutableArray(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in PerfLabTests.CastingPerf2.CastingPerf

Repro

PerfLabTests.CastingPerf2.CastingPerf.ObjFooIsObj

ETL Files

Histogram

JIT Disasms

PerfLabTests.CastingPerf2.CastingPerf.IFooFooIsIFoo

ETL Files

Histogram

JIT Disasms

PerfLabTests.CastingPerf2.CastingPerf.FooObjIsNull

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Tests.Perf_UInt64

Repro

System.Tests.Perf_UInt64.TryParseHex(value: "FFFFFFFFFFFFFFFF")

ETL Files

Histogram

JIT Disasms

System.Tests.Perf_UInt64.TryParseHex(value: "3039")

ETL Files

Histogram