dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/arm64: 2 Improvements on 6/2/2026 12:28:46 AM +00:00

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arch-arm64 branch-refs/heads/main compilationmode-tiered kind-micro Look Again os-linux perf-improvement r2rtype-r2r_interpreter runkind-micro runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | azurelinux 3.0
Queue | CobaltAzureLinux
Baseline | [a82b35567c0b55dbd892abace73a3ad4ac859ccb](https://github.com/dotnet/runtime/commit/a82b35567c0b55dbd892abace73a3ad4ac859ccb)
Compare | [3472dd55e0b00e5689992068d720ad32fe6df377](https://github.com/dotnet/runtime/commit/3472dd55e0b00e5689992068d720ad32fe6df377)
Diff | [Diff](https://github.com/dotnet/runtime/compare/a82b35567c0b55dbd892abace73a3ad4ac859ccb...3472dd55e0b00e5689992068d720ad32fe6df377)
Configs | CompilationMode:tiered, R2RType:r2r_interpreter, RunKind:micro

### Improvements in Microsoft.AspNetCore.Server.Kestrel.Performance.PipeThroughputBenchmark

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

  • [Parse_ParallelAsync - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 2.53 μs | 2.13 μs | 0.84 | 0.39 | False | | |
|
  • [Parse_ParallelAsync - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 3.43 μs | 3.02 μs | 0.88 | 0.46 | False | | |

![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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'Microsoft.AspNetCore.Server.Kestrel.Performance.PipeThroughputBenchmark*'
```

### Microsoft.AspNetCore.Server.Kestrel.Performance.PipeThroughputBenchmark.Parse_ParallelAsync(Length: 128, Chunks: 16)

#### ETL Files

#### Histogram

#### JIT Disasms

### Microsoft.AspNetCore.Server.Kestrel.Performance.PipeThroughputBenchmark.Parse_ParallelAsync(Length: 4096, Chunks: 16)

#### 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)

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