dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x64: 2 Regressions on 8/8/2026 9:43:40 AM +00:00

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arch-x64 branch-11.0 compilationmode-tiered kind-scenarios Noise 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 | [ae1c2e796871b41b1ffc4357e4aec0dd8c1f4f90](https://github.com/dotnet/sdk/commit/ae1c2e796871b41b1ffc4357e4aec0dd8c1f4f90)
Compare | [10d231dd86555cc17a757c800d821ad8e0f459d5](https://github.com/dotnet/sdk/commit/10d231dd86555cc17a757c800d821ad8e0f459d5)
Diff | [Diff](https://github.com/dotnet/sdk/compare/ae1c2e796871b41b1ffc4357e4aec0dd8c1f4f90...10d231dd86555cc17a757c800d821ad8e0f459d5)
Configs | CompilationMode:tiered, RunKind:scenarios

### Regressions in Startup - WinForms Large - FDD Publish

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

  • [Startup - WinForms Large - FDD Publish - Generic Startup]()
  • [ADX - Test Multi Config Graph]()
| 1028.51 ms | 1079.86 ms | 1.05 | 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 - WinForms Large - FDD Publish*'
```

### Startup - WinForms Large - 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 | [ae1c2e796871b41b1ffc4357e4aec0dd8c1f4f90](https://github.com/dotnet/sdk/commit/ae1c2e796871b41b1ffc4357e4aec0dd8c1f4f90)
Compare | [10d231dd86555cc17a757c800d821ad8e0f459d5](https://github.com/dotnet/sdk/commit/10d231dd86555cc17a757c800d821ad8e0f459d5)
Diff | [Diff](https://github.com/dotnet/sdk/compare/ae1c2e796871b41b1ffc4357e4aec0dd8c1f4f90...10d231dd86555cc17a757c800d821ad8e0f459d5)
Configs | CompilationMode:tiered, RunKind:scenarios

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

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

  • [Startup - Static Console Template - FDD Publish - Time To Main]()
  • [ADX - Test Multi Config Graph]()
| 35.09 ms | 35.87 ms | 1.02 | 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 Console Template - FDD Publish*'
```

### Startup - Static 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)

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with docs/benchmarking-workflow-dotnet-runtime.md and scripts/benchmarks_ci.py in the dotnet/performance repository. Run the two provided benchmark filters on Windows x64, compare the results with the listed baseline and comparison commits, and use the linked test reports to determine whether the two reported startup regressions reproduce and are resolved.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
45/100

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