dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 603 Improvements on 3/6/2026 3:17:01 AM -08:00

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

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [b9d3bb80ff804aa4578399759ad00120e78c4cfd](https://github.com/dotnet/runtime/commit/b9d3bb80ff804aa4578399759ad00120e78c4cfd)
Compare | [8b63bd26190fe970d9d0643f552a27a42cb8e9a2](https://github.com/dotnet/runtime/commit/8b63bd26190fe970d9d0643f552a27a42cb8e9a2)
Diff | [Diff](https://github.com/dotnet/runtime/compare/b9d3bb80ff804aa4578399759ad00120e78c4cfd...8b63bd26190fe970d9d0643f552a27a42cb8e9a2)
Configs | CompilationMode:wasm, RunKind:micro

### Improvements in System.Buffers.Text.Tests.Utf8ParserTests

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

  • [TryParseUInt32Hex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 94.31 ns | 78.83 ns | 0.84 | 0.14 | False | | |
|
  • [TryParseByte - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 75.14 ns | 51.31 ns | 0.68 | 0.16 | False | | |
|
  • [TryParseSByte - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 84.04 ns | 68.05 ns | 0.81 | 0.10 | False | | |
|
  • [TryParseUInt16 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 88.37 ns | 67.52 ns | 0.76 | 0.11 | False | | |
|
  • [TryParseBool - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 44.27 ns | 29.12 ns | 0.66 | 0.17 | False | | |
|
  • [TryParseUInt32Hex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 75.41 ns | 64.19 ns | 0.85 | 0.12 | False | | |
|
  • [TryParseInt32 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 106.67 ns | 81.83 ns | 0.77 | 0.06 | False | | |
|
  • [TryParseUInt32 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 100.54 ns | 77.40 ns | 0.77 | 0.11 | False | | |
|
  • [TryParseUInt16 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 74.79 ns | 51.63 ns | 0.69 | 0.09 | False | | |
|
  • [TryParseUInt64 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 149.73 ns | 117.26 ns | 0.78 | 0.09 | False | | |
|
  • [TryParseBool - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 39.15 ns | 32.17 ns | 0.82 | 0.17 | False | | |
|
  • [TryParseUInt64Hex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 64.19 ns | 49.77 ns | 0.78 | 0.11 | False | | |
|
  • [TryParseInt16 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 90.23 ns | 67.07 ns | 0.74 | 0.10 | False | | |
|
  • [TryParseUInt32 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 88.21 ns | 66.34 ns | 0.75 | 0.09 | False | | |
|
  • [TryParseInt64 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 91.10 ns | 68.44 ns | 0.75 | 0.10 | False | | |
|
  • [TryParseUInt64 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 87.76 ns | 65.64 ns | 0.75 | 0.15 | False | | |
|
  • [TryParseByte - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 82.20 ns | 59.13 ns | 0.72 | 0.10 | False | | |
|
  • [TryParseDouble - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 866.02 ns | 566.39 ns | 0.65 | 0.06 | False | | |
|
  • [TryParseInt16 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 76.29 ns | 54.77 ns | 0.72 | 0.11 | False | | |
|
  • [TryParseDouble - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 882.56 ns | 555.62 ns | 0.63 | 0.07 | False | | |
|
  • [TryParseSingle - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 376.66 ns | 276.05 ns | 0.73 | 0.10 | False | | |
|
  • [TryParseInt64 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 140.50 ns | 119.58 ns | 0.85 | 0.07 | False | | |
|
  • [TryParseDecimal - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 325.56 ns | 258.98 ns | 0.80 | 0.11 | False | | |
|
  • [TryParseUInt64Hex - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 93.10 ns | 65.57 ns | 0.70 | 0.14 | False | | |
|
  • [TryParseUInt64 - Duration of single invocation]()
  • πŸ“ - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 74.19 ns | 50.57 ns | 0.68 | 0.09 | 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.Buffers.Text.Tests.Utf8ParserTests*'
```

### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt32Hex(value: FFFFFFFFFFFFFFFF)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Buffers.Text.Tests.Utf8ParserTests.TryParseByte(value: 0)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseSByte(value: 127)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt16(value: 65535)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseBool(value: True )

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt32Hex(value: 3039)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseInt32(value: -2147483648)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt32(value: 4294967295)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt16(value: 0)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt64(value: 18446744073709551615)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseBool(value: False)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt64Hex(value: 0)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseInt16(value: 32767)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt32(value: 12345)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseInt64(value: 12345)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt64(value: 12345)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseByte(value: 255)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseDouble(value: -1.7976931348623157e+308)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseInt16(value: 0)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseDouble(value: 1.7976931348623157e+308)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseSingle(value: 12345)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseInt64(value: -9223372036854775808)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseDecimal(value: 123456.789)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt64Hex(value: 3039)

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### System.Buffers.Text.Tests.Utf8ParserTests.TryParseUInt64(value: 0)

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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)

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