[Perf] Windows/x86: 14 Regressions on 9/5/2026 10:46:07 AM +00:00

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#78,981 opened on Sep 5, 2026 1 comment 0 reactions 0 assignees View on GitHub

arch-x86 branch-11.0 compilationmode-tiered kind-sdk_scenarios Look Again os-windows perf-regression runkind-sdk_scenarios untriaged

Dominant language: No language data
Stars: 10
Forks: 8
PR merge metrics: PR metrics pending

Description

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [f8a811758057986566da27d06d8f03a7e5e226bf](https://github.com/dotnet/sdk/commit/f8a811758057986566da27d06d8f03a7e5e226bf)
Compare | [c9b72963eb22ce3f8eb2ad8ebedf9ecef57615da](https://github.com/dotnet/sdk/commit/c9b72963eb22ce3f8eb2ad8ebedf9ecef57615da)
Diff | [Diff](https://github.com/dotnet/sdk/compare/f8a811758057986566da27d06d8f03a7e5e226bf...c9b72963eb22ce3f8eb2ad8ebedf9ecef57615da)
Configs | CompilationMode:tiered, RunKind:sdk_scenarios

### Regressions in SDK MSTest Test Project (.NET Core) Template Clean Build

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

[SDK MSTest Test Project - Process Time]()
[ADX - Test Multi Config Graph]()

| 2680.13 ms | 2798.51 ms | 1.04 | 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 'SDK MSTest Test Project (.NET Core) Template Clean Build*'
```

### SDK MSTest Test Project (.NET Core) Template Clean Build

#### 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

### Regressions in SDK ASP.Net Core Empty Template Build(No Change)

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

[Net Core Empty Template Build - Process Time]()
[ADX - Test Multi Config Graph]()

| 377.77 ms | 397.31 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 'SDK ASP.Net Core Empty Template Build(No Change)*'
```

### SDK ASP.Net Core Empty Template Build(No Change)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in SDK NUnit 3 Test Project Template Clean Build

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

[SDK NUnit 3 Test Project Template Clean Build - Process Time]()
[ADX - Test Multi Config Graph]()

| 2542.01 ms | 2689.89 ms | 1.06 | 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 'SDK NUnit 3 Test Project Template Clean Build*'
```

### SDK NUnit 3 Test Project Template Clean Build

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in Inner Loop MsBuild Console

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

[Inner Loop MsBuild Console - Generic Startup Diff]()
[ADX - Test Multi Config Graph]()

| 755.10 ms | 771.60 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 'Inner Loop MsBuild Console*'
```

### Inner Loop MsBuild Console

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Improvements in Inner Loop MVC

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

[Inner Loop MVC - Generic Startup Diff]()
[ADX - Test Multi Config Graph]()

| 1299.98 ms | 1228.60 ms | 0.95 | 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 'Inner Loop MVC*'
```

### Inner Loop MVC

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in SDK Console Template net8.0 Build(No Change)

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

[0 Build - Process Time]()
[ADX - Test Multi Config Graph]()

| 319.80 ms | 332.72 ms | 1.04 | 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 'SDK Console Template net8.0 Build(No Change)*'
```

### SDK Console Template net8.0 Build(No Change)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in SDK NUnit 3 Test Project Template Build(No Change)

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

[SDK NUnit 3 Test Project Template Build - Process Time]()
[ADX - Test Multi Config Graph]()

| 350.49 ms | 358.19 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 'SDK NUnit 3 Test Project Template Build(No Change)*'
```

### SDK NUnit 3 Test Project Template Build(No Change)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in SDK New Console

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

[SDK New Console - Process Time]()
[ADX - Test Multi Config Graph]()

| 491.68 ms | 669.55 ms | 1.36 | 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 'SDK New Console*'
```

### SDK New Console

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Improvements in SDK MSTest Test Project (.NET Core) Template Build(No Change)

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

[SDK MSTest Test Project - Process Time]()
[ADX - Test Multi Config Graph]()

| 393.01 ms | 358.42 ms | 0.91 | 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 'SDK MSTest Test Project (.NET Core) Template Build(No Change)*'
```

### SDK MSTest Test Project (.NET Core) Template Build(No Change)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in SDK ASP.NET Core Web App Template Clean Build

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

[NET Core Web App Template Clean Build - Process Time]()
[ADX - Test Multi Config Graph]()

| 3684.05 ms | 3774.83 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 'SDK ASP.NET Core Web App Template Clean Build*'
```

### SDK ASP.NET Core Web App Template Clean Build

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in SDK Console Template net9.0 Build(No Change)

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

[0 Build - Process Time]()
[ADX - Test Multi Config Graph]()

| 308.05 ms | 325.01 ms | 1.06 | 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 'SDK Console Template net9.0 Build(No Change)*'
```

### SDK Console Template net9.0 Build(No Change)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in SDK ASP.NET Core Web App (Model-View-Controller) Template Clean Build

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

[NET Core Web App - Process Time]()
[ADX - Test Multi Config Graph]()

| 3760.84 ms | 3926.09 ms | 1.04 | 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 'SDK ASP.NET Core Web App (Model-View-Controller) Template Clean Build*'
```

### SDK ASP.NET Core Web App (Model-View-Controller) Template Clean Build

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in SDK Console Template net11.0 Build(No Change)

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

[0 Build - Process Time]()
[ADX - Test Multi Config Graph]()

| 337.97 ms | 405.49 ms | 1.20 | 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 'SDK Console Template net11.0 Build(No Change)*'
```

### SDK Console Template net11.0 Build(No Change)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Improvements in SDK Console Template Build(No Change)

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

[SDK Console Template Build - Process Time]()
[ADX - Test Multi Config Graph]()

| 555.54 ms | 387.78 ms | 0.70 | 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 'SDK Console Template Build(No Change)*'
```

### SDK Console Template Build(No Change)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with the benchmarking workflow documentation and run the provided benchmarks_ci.py command for the affected SDK scenarios. Compare the baseline and compare commits using the linked performance reports, then identify the regression source and verify that the affected benchmark timings no longer regress.

Written by the indexing model from the issue text.

Assessment

Tech stack: git, python
Domain: performance, testing
Issue type: Bug
Difficulty: 4/5
Estimated time: 3-5 days
Activity status: Active
Clarity: Needs clarification
Newbie friendliness: 35/100

[Perf] Windows/x86: 14 Regressions on 9/5/2026 10:46:07 AM +00:00

Description

Contributor guide

Research direction

Assessment

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