[Perf] Windows/x64: 3 Regressions on 6/25/2026 10:47:26 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [b756a8d8a0e64905e16c81911bb09a8110bc3395](https://github.com/dotnet/sdk/commit/b756a8d8a0e64905e16c81911bb09a8110bc3395)
Compare | [1d4910780fe728cf5affade170fe51fc8f96f9fb](https://github.com/dotnet/sdk/commit/1d4910780fe728cf5affade170fe51fc8f96f9fb)
Diff | [Diff](https://github.com/dotnet/sdk/compare/b756a8d8a0e64905e16c81911bb09a8110bc3395...1d4910780fe728cf5affade170fe51fc8f96f9fb)
Configs | CompilationMode:tiered, RunKind:scenarios

### Regressions 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]()

| 1035.44 ms | 1144.32 ms | 1.11 | 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 | [b756a8d8a0e64905e16c81911bb09a8110bc3395](https://github.com/dotnet/sdk/commit/b756a8d8a0e64905e16c81911bb09a8110bc3395)
Compare | [1d4910780fe728cf5affade170fe51fc8f96f9fb](https://github.com/dotnet/sdk/commit/1d4910780fe728cf5affade170fe51fc8f96f9fb)
Diff | [Diff](https://github.com/dotnet/sdk/compare/b756a8d8a0e64905e16c81911bb09a8110bc3395...1d4910780fe728cf5affade170fe51fc8f96f9fb)
Configs | CompilationMode:tiered, RunKind:scenarios

### Improvements 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]()

| 941.74 ms | 912.33 ms | 0.97 | 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)

---

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [b756a8d8a0e64905e16c81911bb09a8110bc3395](https://github.com/dotnet/sdk/commit/b756a8d8a0e64905e16c81911bb09a8110bc3395)
Compare | [1d4910780fe728cf5affade170fe51fc8f96f9fb](https://github.com/dotnet/sdk/commit/1d4910780fe728cf5affade170fe51fc8f96f9fb)
Diff | [Diff](https://github.com/dotnet/sdk/compare/b756a8d8a0e64905e16c81911bb09a8110bc3395...1d4910780fe728cf5affade170fe51fc8f96f9fb)
Configs | CompilationMode:tiered, RunKind:scenarios

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

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

• [Startup - Static Winforms Template - FDD Publish - Generic Startup]()
• [ADX - Test Multi Config Graph]()

| 82.43 ms | 86.57 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 - Static Winforms Template - FDD Publish*'
```

### Startup - Static Winforms 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)

Start with the linked test reports and the benchmarking workflow in docs/benchmarking-workflow-dotnet-runtime.md. Reproduce the PaintDotNet and Static Winforms Template benchmarks with the provided benchmarks_ci.py commands, then compare the baseline and test results and inspect the available profiling artifacts. Done means identifying and addressing the reported startup regression, with the benchmark results confirming the change.

Written by the indexing model from the issue text.