dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x64: 3 Regressions on 8/14/2026 9:27:29 AM +00:00

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arch-x64 branch-11.0 compilationmode-tiered kind-scenarios Look Again os-windows perf-regression runkind-scenarios untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [19bc97f3dd3ab67c7810e4ab179125b7c6a60641](https://github.com/dotnet/sdk/commit/19bc97f3dd3ab67c7810e4ab179125b7c6a60641)
Compare | [7cdb217445905f3342bbb0266a4497b9a014389a](https://github.com/dotnet/sdk/commit/7cdb217445905f3342bbb0266a4497b9a014389a)
Diff | [Diff](https://github.com/dotnet/sdk/compare/19bc97f3dd3ab67c7810e4ab179125b7c6a60641...7cdb217445905f3342bbb0266a4497b9a014389a)
Configs | CompilationMode:tiered, RunKind:scenarios

### Regressions in Startup - Static VB Console Template - FDD Publish

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

  • [Startup - Static VB Console Template - FDD Publish - Time To Main]()
  • [ADX - Test Multi Config Graph]()
| 42.42 ms | 51.51 ms | 1.21 | 0.00 | True | | |

![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 'Startup - Static VB Console Template - FDD Publish*'
```

### Startup - Static VB Console Template - FDD Publish

#### 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 | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [19bc97f3dd3ab67c7810e4ab179125b7c6a60641](https://github.com/dotnet/sdk/commit/19bc97f3dd3ab67c7810e4ab179125b7c6a60641)
Compare | [7cdb217445905f3342bbb0266a4497b9a014389a](https://github.com/dotnet/sdk/commit/7cdb217445905f3342bbb0266a4497b9a014389a)
Diff | [Diff](https://github.com/dotnet/sdk/compare/19bc97f3dd3ab67c7810e4ab179125b7c6a60641...7cdb217445905f3342bbb0266a4497b9a014389a)
Configs | CompilationMode:tiered, RunKind:scenarios

### Improvements in Startup - PaintDotNet - FDD Publish

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

  • [Startup - PaintDotNet - FDD Publish - Generic Startup]()
  • [ADX - Test Multi Config Graph]()
| 1095.01 ms | 1015.58 ms | 0.93 | 0.00 | True | | |

![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 'Startup - PaintDotNet - FDD Publish*'
```

### Startup - PaintDotNet - FDD Publish

#### 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 | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [19bc97f3dd3ab67c7810e4ab179125b7c6a60641](https://github.com/dotnet/sdk/commit/19bc97f3dd3ab67c7810e4ab179125b7c6a60641)
Compare | [7cdb217445905f3342bbb0266a4497b9a014389a](https://github.com/dotnet/sdk/commit/7cdb217445905f3342bbb0266a4497b9a014389a)
Diff | [Diff](https://github.com/dotnet/sdk/compare/19bc97f3dd3ab67c7810e4ab179125b7c6a60641...7cdb217445905f3342bbb0266a4497b9a014389a)
Configs | CompilationMode:tiered, RunKind:scenarios

### Regressions in Startup - PaintDotNet - FDD Publish - Affinity 85

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

  • [Startup - PaintDotNet - FDD Publish - Affinity 85 - Generic Startup]()
  • [ADX - Test Multi Config Graph]()
| 929.74 ms | 957.26 ms | 1.03 | 0.00 | True | | |

![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 'Startup - PaintDotNet - FDD Publish - Affinity 85*'
```

### Startup - PaintDotNet - FDD Publish - Affinity 85

#### 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)

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with performance/scripts/benchmarks_ci.py and the benchmarking workflow linked in the issue, then run the listed filters on Windows. Compare the benchmark reports for the baseline and compare commits, focusing on the VB Console and PaintDotNet startup scenarios. Done means the regression is reproduced, its cause is identified, and the affected measurements are verified against the reports.

Written by the indexing model from the issue text.

Assessment

Tech stack
git, python
Domain
performance, testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
38/100

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