dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 16 Improvements on 6/24/2026 2:33:49 AM +00:00

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

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [f4430a4ba762ef82841ff7a8c340ed8854b2bca9](https://github.com/dotnet/runtime/commit/f4430a4ba762ef82841ff7a8c340ed8854b2bca9)
Compare | [46b72c7c81592b429e062bacebe8d39f17362333](https://github.com/dotnet/runtime/commit/46b72c7c81592b429e062bacebe8d39f17362333)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f4430a4ba762ef82841ff7a8c340ed8854b2bca9...46b72c7c81592b429e062bacebe8d39f17362333)
Configs | CompilationMode:wasm, RunKind:micro

### Improvements in System.MathBenchmarks.Single

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

  • [ScaleB - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 85.80 μs | 24.97 μs | 0.29 | 0.57 | False | | |
|
  • [Log - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 80.60 μs | 40.42 μs | 0.50 | 0.02 | False | | |
|
  • [Log2 - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 79.33 μs | 40.67 μs | 0.51 | 0.07 | False | | |
|
  • [Round - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 79.56 μs | 48.61 μs | 0.61 | 0.02 | False | | |
|
  • [Exp2M1 - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 103.51 μs | 63.73 μs | 0.62 | 0.02 | False | | |
|
  • [Exp10M1 - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 102.91 μs | 63.77 μs | 0.62 | 0.16 | False | | |
|
  • [Exp2 - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 86.81 μs | 55.38 μs | 0.64 | 0.05 | False | | |
|
  • [Exp10 - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 84.81 μs | 55.24 μs | 0.65 | 0.03 | False | | |
|
  • [CopySign - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 59.67 μs | 39.95 μs | 0.67 | 0.00 | False | | |
|
  • [Log2P1 - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 97.31 μs | 65.29 μs | 0.67 | 0.04 | False | | |
|
  • [Pow - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 82.69 μs | 65.05 μs | 0.79 | 0.09 | False | | |

![graph]()
![graph]()
![graph]()
![graph]()
![graph]()
![graph]()
![graph]()
![graph]()
![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 'System.MathBenchmarks.Single*'
```

### System.MathBenchmarks.Single.ScaleB

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Log

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Log2

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Round

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Exp2M1

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Exp10M1

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Exp2

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Exp10

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.CopySign

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Log2P1

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Single.Pow

#### 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 | [f4430a4ba762ef82841ff7a8c340ed8854b2bca9](https://github.com/dotnet/runtime/commit/f4430a4ba762ef82841ff7a8c340ed8854b2bca9)
Compare | [46b72c7c81592b429e062bacebe8d39f17362333](https://github.com/dotnet/runtime/commit/46b72c7c81592b429e062bacebe8d39f17362333)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f4430a4ba762ef82841ff7a8c340ed8854b2bca9...46b72c7c81592b429e062bacebe8d39f17362333)
Configs | CompilationMode:wasm, RunKind:micro

### Improvements in System.MathBenchmarks.Double

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

  • [ScaleB - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 85.77 μs | 25.24 μs | 0.29 | 0.56 | False | | |
|
  • [Atanh - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 137.94 μs | 79.48 μs | 0.58 | 0.23 | False | | |
|
  • [Asinh - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 138.50 μs | 82.75 μs | 0.60 | 0.06 | False | | |
|
  • [Round - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 77.40 μs | 49.62 μs | 0.64 | 0.06 | False | | |
|
  • [CopySign - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 59.67 μs | 39.41 μs | 0.66 | 0.00 | False | | |

![graph]()
![graph]()
![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 'System.MathBenchmarks.Double*'
```

### System.MathBenchmarks.Double.ScaleB

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Double.Atanh

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Double.Asinh

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Double.Round

#### ETL Files

#### Histogram

#### JIT Disasms

### System.MathBenchmarks.Double.CopySign

#### 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 Run Information and the linked benchmark source for System.MathBenchmarks.Single, including ScaleB, Log, Log2, Round, and the Exp and CopySign benchmarks. Compare the baseline and test results in the linked performance reports; done requires identifying and addressing the reported WebAssembly performance changes, but the issue does not specify a particular fix.

Written by the indexing model from the issue text.

Assessment

Tech stack
linux, wasm
Domain
performance
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
25/100

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