dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/arm64: 296 Improvements on 8/11/2026 11:24:58 PM +00:00

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ampere arch-arm64 branch-refs/heads/main compilationmode-tiered kind-micro Noise os-linux perf-improvement runkind-micro runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [60108ba66eb7d1d12f595480091b4ad80a24b172](https://github.com/dotnet/runtime/commit/60108ba66eb7d1d12f595480091b4ad80a24b172)
Compare | [19a2d977ed14ff9ab7417519f0257b3b296a82f4](https://github.com/dotnet/runtime/commit/19a2d977ed14ff9ab7417519f0257b3b296a82f4)
Diff | [Diff](https://github.com/dotnet/runtime/compare/60108ba66eb7d1d12f595480091b4ad80a24b172...19a2d977ed14ff9ab7417519f0257b3b296a82f4)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Tests.Perf_Int32

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

  • [ParseHex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 15.49 ns | 8.13 ns | 0.53 | 0.02 | False | | |
|
  • [Parse - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 16.36 ns | 9.09 ns | 0.56 | 0.01 | False | | |
|
  • [TryParse - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 16.45 ns | 9.18 ns | 0.56 | 0.02 | False | | |
|
  • [TryParseSpan - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 16.44 ns | 9.21 ns | 0.56 | 0.02 | False | | |
|
  • [ParseSpan - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 16.43 ns | 9.42 ns | 0.57 | 0.01 | False | | |
|
  • [Parse - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 20.68 ns | 13.46 ns | 0.65 | 0.01 | False | | |
|
  • [TryParseSpan - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 20.79 ns | 13.55 ns | 0.65 | 0.01 | False | | |
|
  • [TryParse - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 20.78 ns | 13.74 ns | 0.66 | 0.01 | False | | |
|
  • [ParseSpan - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 20.73 ns | 13.77 ns | 0.66 | 0.01 | False | | |
|
  • [ToString - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 33.20 ns | 22.45 ns | 0.68 | 0.01 | False | | |
|
  • [TryFormat - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 24.60 ns | 16.71 ns | 0.68 | 0.01 | False | | |
|
  • [ParseHex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 29.61 ns | 21.14 ns | 0.71 | 0.01 | False | | |
|
  • [Parse - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 27.66 ns | 19.99 ns | 0.72 | 0.01 | False | | |
|
  • [ParseSpan - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 27.64 ns | 20.09 ns | 0.73 | 0.01 | False | | |
|
  • [TryParse - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 27.71 ns | 20.19 ns | 0.73 | 0.01 | False | | |
|
  • [TryParseSpan - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 27.67 ns | 20.20 ns | 0.73 | 0.01 | False | | |
|
  • [Parse - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 27.91 ns | 20.42 ns | 0.73 | 0.01 | False | | |
|
  • [ParseSpan - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 27.90 ns | 20.54 ns | 0.74 | 0.01 | False | | |
|
  • [TryParse - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 27.99 ns | 20.74 ns | 0.74 | 0.01 | False | | |
|
  • [TryParseSpan - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 27.95 ns | 20.77 ns | 0.74 | 0.01 | False | | |
|
  • [ParseHex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 48.75 ns | 38.61 ns | 0.79 | 0.01 | False | | |
|
  • [ToString - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 15.49 ns | 12.52 ns | 0.81 | 0.01 | False | | |
|
  • [ToStringHex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 18.13 ns | 14.96 ns | 0.82 | 0.03 | False | | |
|
  • [ParseHex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 46.88 ns | 38.75 ns | 0.83 | 0.02 | False | | |
|
  • [ToStringHex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 21.74 ns | 18.61 ns | 0.86 | 0.02 | False | | |
|
  • [ToString - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 19.59 ns | 16.95 ns | 0.87 | 0.01 | False | | |
|
  • [ToStringHex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 27.13 ns | 23.74 ns | 0.88 | 0.01 | False | | |
|
  • [ToStringHex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 26.96 ns | 23.59 ns | 0.88 | 0.02 | False | | |

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[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.Tests.Perf_Int32*'
```

### System.Tests.Perf_Int32.ParseHex(value: "4")

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### System.Tests.Perf_Int32.Parse(value: "4")

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### System.Tests.Perf_Int32.TryParse(value: "4")

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### System.Tests.Perf_Int32.TryParseSpan(value: "4")

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### System.Tests.Perf_Int32.ParseSpan(value: "4")

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### System.Tests.Perf_Int32.Parse(value: "12345")

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### System.Tests.Perf_Int32.TryParseSpan(value: "12345")

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### System.Tests.Perf_Int32.TryParse(value: "12345")

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### System.Tests.Perf_Int32.ParseSpan(value: "12345")

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### System.Tests.Perf_Int32.ToString(value: -2147483648)

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### System.Tests.Perf_Int32.TryFormat(value: -2147483648)

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### System.Tests.Perf_Int32.ParseHex(value: "3039")

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### System.Tests.Perf_Int32.Parse(value: "2147483647")

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### System.Tests.Perf_Int32.ParseSpan(value: "2147483647")

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### System.Tests.Perf_Int32.TryParse(value: "2147483647")

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### System.Tests.Perf_Int32.TryParseSpan(value: "2147483647")

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### System.Tests.Perf_Int32.Parse(value: "-2147483648")

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### System.Tests.Perf_Int32.ParseHex(value: "7FFFFFFF")

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### System.Tests.Perf_Int32.ToString(value: 12345)

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### System.Tests.Perf_Int32.ToStringHex(value: 4)

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### System.Tests.Perf_Int32.ParseHex(value: "80000000")

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### System.Tests.Perf_Int32.ToStringHex(value: 12345)

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### System.Tests.Perf_Int32.ToString(value: 2147483647)

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### System.Tests.Perf_Int32.ToStringHex(value: -2147483648)

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### System.Tests.Perf_Int32.ToStringHex(value: 2147483647)

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### 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 linked benchmark entries in dotnet/performance/src/benchmarks/micro/libraries/System.Runtime/Perf.Int32.cs, then review the baseline and compare commits and the linked performance reports. The issue records improvements for several Int32 parsing benchmarks but does not state a requested change or acceptance criteria, so the intended definition of done is not provided.

Written by the indexing model from the issue text.

Assessment

Tech stack
linux
Domain
performance
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
20/100

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