[Perf] Windows/x86: 11 Regressions on 8/28/2026 9:36:02 AM +00:00

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#78,619 opened on Aug 28, 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

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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 | [bf3289d05dff3962cdccb0e81b5315990e5b1198](https://github.com/dotnet/sdk/commit/bf3289d05dff3962cdccb0e81b5315990e5b1198)
Compare | [100002779ceec649fcfd00c233f673b494130827](https://github.com/dotnet/sdk/commit/100002779ceec649fcfd00c233f673b494130827)
Diff | [Diff](https://github.com/dotnet/sdk/compare/bf3289d05dff3962cdccb0e81b5315990e5b1198...100002779ceec649fcfd00c233f673b494130827)
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]()

| 2767.75 ms | 2890.36 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]()

| 435.61 ms | 458.43 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 F# Console Template Clean Build

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

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

| 2473.41 ms | 2680.35 ms | 1.08 | 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 F# Console Template Clean Build*'
```

### SDK F# Console Template Clean Build

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions 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]()

| 1192.77 ms | 1363.86 ms | 1.14 | 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 xUnit Test Project Template Clean Build

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

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

| 2512.38 ms | 2664.63 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 xUnit Test Project Template Clean Build*'
```

### SDK xUnit Test Project Template Clean Build

#### 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]()

| 312.15 ms | 334.71 ms | 1.07 | 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 Inner Loop Console

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

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

| 761.93 ms | 802.73 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 'Inner Loop Console*'
```

### Inner Loop Console

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Improvements in SDK Class library Template Build(No Change)

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

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

| 338.83 ms | 330.42 ms | 0.98 | 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 Class library Template Build(No Change)*'
```

### SDK Class library Template Build(No Change)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in SDK ASP.NET Core gRPC Service Template Clean Build

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

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

| 3482.18 ms | 3561.17 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 gRPC Service Template Clean Build*'
```

### SDK ASP.NET Core gRPC Service Template Clean Build

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Regressions in SDK ASP.NET Core Web API Template Build(No Change)

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

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

| 398.67 ms | 438.24 ms | 1.10 | 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 API Template Build(No Change)*'
```

### SDK ASP.NET Core Web API Template Build(No Change)

#### 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]()

| 321.76 ms | 330.16 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 'SDK Console Template net11.0 Build(No Change)*'
```

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

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with docs/benchmarking-workflow-dotnet-runtime.md and run the listed benchmarks_ci.py command on Windows for the affected SDK scenarios. Compare the baseline and test results, inspect the linked performance reports and commit diff, and determine whether the reported regressions reproduce; done means the regression is explained and the affected benchmarks return to an accepted result.

Written by the indexing model from the issue text.

Assessment

Tech stack: fsharp, python
Domain: build-system, performance, testing-qa
Issue type: Bug
Difficulty: 4/5
Estimated time: 3-5 days
Activity status: Active
Clarity: Needs clarification
Newbie friendliness: 32/100

[Perf] Windows/x86: 11 Regressions on 8/28/2026 9:36:02 AM +00:00

Description

Contributor guide

Research direction

Assessment

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