dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x86: 12 Improvements on 6/3/2026 1:30:53 PM +00:00

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arch-x86 branch-refs/heads/main compilationmode-tiered kind-micro os-windows perf-improvement PGO runkind-micro runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [ac695692911547e710e43fa7f6e38546a13504a5](https://github.com/dotnet/runtime/commit/ac695692911547e710e43fa7f6e38546a13504a5)
Compare | [f5f1079c96decf4c77b7fd84664d739218bda08c](https://github.com/dotnet/runtime/commit/f5f1079c96decf4c77b7fd84664d739218bda08c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ac695692911547e710e43fa7f6e38546a13504a5...f5f1079c96decf4c77b7fd84664d739218bda08c)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_VectorConvert

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [Widen_short - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 547.99 ns | 432.26 ns | 0.79 | 0.07 | False | | |
|
  • [Widen_uint - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 547.14 ns | 433.68 ns | 0.79 | 0.07 | False | | |
|
  • [Widen_int - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 547.03 ns | 434.13 ns | 0.79 | 0.08 | False | | |
|
  • [Widen_ushort - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 548.13 ns | 436.36 ns | 0.80 | 0.06 | False | | |

![graph]()
![graph]()
![graph]()
![graph]()
[Test Report]()

### 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.Numerics.Tests.Perf_VectorConvert*'
```

### System.Numerics.Tests.Perf_VectorConvert.Widen_short

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Widen_uint

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Widen_int

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Widen_ushort

#### 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)

---

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [05af41550d4c764284d03bb8d79a977c5cacba8d](https://github.com/dotnet/runtime/commit/05af41550d4c764284d03bb8d79a977c5cacba8d)
Compare | [3b0dd88d6cbd8c1ccdd57f20e831e877f742c9f6](https://github.com/dotnet/runtime/commit/3b0dd88d6cbd8c1ccdd57f20e831e877f742c9f6)
Diff | [Diff](https://github.com/dotnet/runtime/compare/05af41550d4c764284d03bb8d79a977c5cacba8d...3b0dd88d6cbd8c1ccdd57f20e831e877f742c9f6)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in Exceptions.Handling

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [MultipleNestedTryCatch_FirstCatches - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 2.01 μs | 1.83 μs | 0.91 | 0.01 | False | | |
|
  • [ThrowAndCatchWhenFinally - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 2.20 μs | 2.03 μs | 0.92 | 0.00 | False | | |
|
  • [ThrowAndCatch - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 1.96 μs | 1.84 μs | 0.94 | 0.02 | False | | |

![graph]()
![graph]()
![graph]()
[Test Report]()

### 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 'Exceptions.Handling*'
```

### Exceptions.Handling.MultipleNestedTryCatch_FirstCatches(kind: Software)

#### ETL Files

#### Histogram

#### JIT Disasms

### Exceptions.Handling.ThrowAndCatchWhenFinally(kind: Software)

#### ETL Files

#### Histogram

#### JIT Disasms

### Exceptions.Handling.ThrowAndCatch(kind: Software)

#### 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)

---

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [ac695692911547e710e43fa7f6e38546a13504a5](https://github.com/dotnet/runtime/commit/ac695692911547e710e43fa7f6e38546a13504a5)
Compare | [f5f1079c96decf4c77b7fd84664d739218bda08c](https://github.com/dotnet/runtime/commit/f5f1079c96decf4c77b7fd84664d739218bda08c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ac695692911547e710e43fa7f6e38546a13504a5...f5f1079c96decf4c77b7fd84664d739218bda08c)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Collections.TryGetValueTrue<String, String>

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [OrderedDictionary - Duration of single invocation]()
  • [ADX - Test Multi Config Graph]()
| 7.68 μs | 7.13 μs | 0.93 | 0.02 | False | | |
|
  • [Dictionary - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 7.27 μs | 6.77 μs | 0.93 | 0.05 | False | | |

![graph]()
![graph]()
[Test Report]()

### 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.Collections.TryGetValueTrue*'
```

### System.Collections.TryGetValueTrue<String, String>.OrderedDictionary(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.TryGetValueTrue<String, String>.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)

---

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [ac695692911547e710e43fa7f6e38546a13504a5](https://github.com/dotnet/runtime/commit/ac695692911547e710e43fa7f6e38546a13504a5)
Compare | [f5f1079c96decf4c77b7fd84664d739218bda08c](https://github.com/dotnet/runtime/commit/f5f1079c96decf4c77b7fd84664d739218bda08c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ac695692911547e710e43fa7f6e38546a13504a5...f5f1079c96decf4c77b7fd84664d739218bda08c)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Xml.Linq.Perf_XName

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [CreateElement - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 16.89 ns | 11.96 ns | 0.71 | 0.03 | False | | |

![graph]()
[Test Report]()

### 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_XName*'
```

### System.Xml.Linq.Perf_XName.CreateElement

#### 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)

---

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [ac695692911547e710e43fa7f6e38546a13504a5](https://github.com/dotnet/runtime/commit/ac695692911547e710e43fa7f6e38546a13504a5)
Compare | [f5f1079c96decf4c77b7fd84664d739218bda08c](https://github.com/dotnet/runtime/commit/f5f1079c96decf4c77b7fd84664d739218bda08c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/ac695692911547e710e43fa7f6e38546a13504a5...f5f1079c96decf4c77b7fd84664d739218bda08c)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Text.RegularExpressions.Tests.Perf_Regex_Common

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [CtorInvoke - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 232.42 μs | 202.98 μs | 0.87 | 0.01 | False | | |

![graph]()
[Test Report]()

### 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.Text.RegularExpressions.Tests.Perf_Regex_Common*'
```

### System.Text.RegularExpressions.Tests.Perf_Regex_Common.CtorInvoke(Options: IgnoreCase, Compiled)

#### 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)

---

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [05af41550d4c764284d03bb8d79a977c5cacba8d](https://github.com/dotnet/runtime/commit/05af41550d4c764284d03bb8d79a977c5cacba8d)
Compare | [f5f1079c96decf4c77b7fd84664d739218bda08c](https://github.com/dotnet/runtime/commit/f5f1079c96decf4c77b7fd84664d739218bda08c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/05af41550d4c764284d03bb8d79a977c5cacba8d...f5f1079c96decf4c77b7fd84664d739218bda08c)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in BenchmarksGame.RegexRedux_1

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

  • [RunBench - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 22.99 ms | 21.66 ms | 0.94 | 0.01 | False | | |

![graph]()
[Test Report]()

### 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 'BenchmarksGame.RegexRedux_1*'
```

### BenchmarksGame.RegexRedux_1.RunBench

#### 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)

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