dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 6 Improvements on 7/30/2026 2:24:29 PM +00:00

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aot-true arch-wasm arch-x64 branch-refs/heads/main compilationmode-wasm kind-micro Look Again os-linux perf-improvement runkind-micro untriaged wasm-aot
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [d1d60b31914b2a81a755890fad31cb44ca5cf5cd](https://github.com/dotnet/runtime/commit/d1d60b31914b2a81a755890fad31cb44ca5cf5cd)
Compare | [974b4b56b05ffe12857f731320f4b235bf36169c](https://github.com/dotnet/runtime/commit/974b4b56b05ffe12857f731320f4b235bf36169c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/d1d60b31914b2a81a755890fad31cb44ca5cf5cd...974b4b56b05ffe12857f731320f4b235bf36169c)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in ArrayDeAbstraction

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

  • [foreach_static_readonly_array_via_interface_property - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 4.92 μs | 4.35 μs | 0.88 | 0.11 | False | | |
|
  • [foreach_static_array_via_interface_property - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 4.80 μs | 4.37 μs | 0.91 | 0.09 | False | | |
|
  • [foreach_static_array_via_interface - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 4.62 μs | 4.31 μs | 0.93 | 0.13 | False | | |

![graph]()
![graph]()
![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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'ArrayDeAbstraction*'
```

### ArrayDeAbstraction.foreach_static_readonly_array_via_interface_property

#### ETL Files

#### Histogram

#### JIT Disasms

### ArrayDeAbstraction.foreach_static_array_via_interface_property

#### ETL Files

#### Histogram

#### JIT Disasms

### ArrayDeAbstraction.foreach_static_array_via_interface

#### 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 | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [d1d60b31914b2a81a755890fad31cb44ca5cf5cd](https://github.com/dotnet/runtime/commit/d1d60b31914b2a81a755890fad31cb44ca5cf5cd)
Compare | [974b4b56b05ffe12857f731320f4b235bf36169c](https://github.com/dotnet/runtime/commit/974b4b56b05ffe12857f731320f4b235bf36169c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/d1d60b31914b2a81a755890fad31cb44ca5cf5cd...974b4b56b05ffe12857f731320f4b235bf36169c)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Linq.Tests.Perf_Enumerable

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

  • [SequenceEqual - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 3.70 μs | 3.11 μs | 0.84 | 0.13 | False | | |

![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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Linq.Tests.Perf_Enumerable*'
```

### System.Linq.Tests.Perf_Enumerable.SequenceEqual(input1: IEnumerable, input2: IEnumerable)

#### 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 | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [d1d60b31914b2a81a755890fad31cb44ca5cf5cd](https://github.com/dotnet/runtime/commit/d1d60b31914b2a81a755890fad31cb44ca5cf5cd)
Compare | [974b4b56b05ffe12857f731320f4b235bf36169c](https://github.com/dotnet/runtime/commit/974b4b56b05ffe12857f731320f4b235bf36169c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/d1d60b31914b2a81a755890fad31cb44ca5cf5cd...974b4b56b05ffe12857f731320f4b235bf36169c)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in Span.Sorting

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

  • [BubbleSortSpan - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 136.92 μs | 118.24 μs | 0.86 | 0.31 | False | | |

![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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'Span.Sorting*'
```

### Span.Sorting.BubbleSortSpan(Size: 512)

#### 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 | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [d1d60b31914b2a81a755890fad31cb44ca5cf5cd](https://github.com/dotnet/runtime/commit/d1d60b31914b2a81a755890fad31cb44ca5cf5cd)
Compare | [974b4b56b05ffe12857f731320f4b235bf36169c](https://github.com/dotnet/runtime/commit/974b4b56b05ffe12857f731320f4b235bf36169c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/d1d60b31914b2a81a755890fad31cb44ca5cf5cd...974b4b56b05ffe12857f731320f4b235bf36169c)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Collections.CreateAddAndClear<String>

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

  • [ImmutableQueue - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 19.60 μs | 15.45 μs | 0.79 | 0.23 | False | | |

![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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.CreateAddAndClear*'
```

### System.Collections.CreateAddAndClear<String>.ImmutableQueue(Size: 512)

#### 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 the benchmark sources named in src/benchmarks/micro/runtime/DeAbstraction/Array.cs, src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs, and src/benchmarks/micro/runtime/Span/Sorting.cs. Run benchmarks_ci.py with the listed filters and compare the linked reports and baseline/compare commits. Done means determining whether the reported improvements need a follow-up change or only triage.

Written by the indexing model from the issue text.

Assessment

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

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