dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/x64: 3 Regressions on 7/9/2026 12:07:00 PM +00:00

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#75,984 1 comment 0 reactions 0 assignees View on GitHub
arch-x64 branch-11.0 compilationmode-tiered kind-bepuphysics Look Again os-windows perf-regression runkind-bepuphysics runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [b4b350a66ea5dcf13420747036d8b263cdf6cbef](https://github.com/dotnet/sdk/commit/b4b350a66ea5dcf13420747036d8b263cdf6cbef)
Compare | [c7028b23fb9d8e1f786cc404c6107c53a0d3a2a3](https://github.com/dotnet/sdk/commit/c7028b23fb9d8e1f786cc404c6107c53a0d3a2a3)
Diff | [Diff](https://github.com/dotnet/sdk/compare/b4b350a66ea5dcf13420747036d8b263cdf6cbef...c7028b23fb9d8e1f786cc404c6107c53a0d3a2a3)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.SweepBenchmarks

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

  • [CapsuleCylinder - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 5.47 μs | 6.03 μs | 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 'DemoBenchmarks.SweepBenchmarks*'
```

### DemoBenchmarks.SweepBenchmarks.CapsuleCylinder

#### 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 | [b4b350a66ea5dcf13420747036d8b263cdf6cbef](https://github.com/dotnet/sdk/commit/b4b350a66ea5dcf13420747036d8b263cdf6cbef)
Compare | [c7028b23fb9d8e1f786cc404c6107c53a0d3a2a3](https://github.com/dotnet/sdk/commit/c7028b23fb9d8e1f786cc404c6107c53a0d3a2a3)
Diff | [Diff](https://github.com/dotnet/sdk/compare/b4b350a66ea5dcf13420747036d8b263cdf6cbef...c7028b23fb9d8e1f786cc404c6107c53a0d3a2a3)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.TwoBodyConstraintBenchmarks

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

  • [LinearAxisServo - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 74.70 μs | 87.04 μs | 1.17 | 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 'DemoBenchmarks.TwoBodyConstraintBenchmarks*'
```

### DemoBenchmarks.TwoBodyConstraintBenchmarks.LinearAxisServo

#### 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 | [b4b350a66ea5dcf13420747036d8b263cdf6cbef](https://github.com/dotnet/sdk/commit/b4b350a66ea5dcf13420747036d8b263cdf6cbef)
Compare | [c7028b23fb9d8e1f786cc404c6107c53a0d3a2a3](https://github.com/dotnet/sdk/commit/c7028b23fb9d8e1f786cc404c6107c53a0d3a2a3)
Diff | [Diff](https://github.com/dotnet/sdk/compare/b4b350a66ea5dcf13420747036d8b263cdf6cbef...c7028b23fb9d8e1f786cc404c6107c53a0d3a2a3)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.ThreeBodyConstraintBenchmarks

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

  • [AreaConstraint - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 79.21 μs | 88.19 μs | 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 'DemoBenchmarks.ThreeBodyConstraintBenchmarks*'
```

### DemoBenchmarks.ThreeBodyConstraintBenchmarks.AreaConstraint

#### 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

Run the three benchmark commands in the Repro sections after reviewing the baseline and compare commits. Start with the referenced SweepBenchmarks.cs, TwoBodyConstraintBenchmarks.cs, and ThreeBodyConstraintBenchmarks.cs source lines, then inspect the linked reports and profiling workflow. Done means identifying the regression cause and confirming the affected benchmarks no longer regress.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
performance, testing
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
38/100

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