[Perf] Linux/x64: 33 Improvements on 6/18/2026 7:52:57 AM +00:00

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#74,886 opened on Jun 23, 2026 2 comments 0 reactions 0 assignees View on GitHub

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

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Stars: 10
Forks: 8
PR merge metrics: PR metrics pending

Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [d72d2fcf29301c5f9fe2c7188c90df93b0730989](https://github.com/dotnet/runtime/commit/d72d2fcf29301c5f9fe2c7188c90df93b0730989)
Compare | [a17debec450d73f9d84e68ca44f63b217f5db49f](https://github.com/dotnet/runtime/commit/a17debec450d73f9d84e68ca44f63b217f5db49f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/d72d2fcf29301c5f9fe2c7188c90df93b0730989...a17debec450d73f9d84e68ca44f63b217f5db49f)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Improvements in System.Tests.Perf_UInt32

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

[TryParse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.39 μs | 1.17 μs | 0.85 | 0.18 | False | | |
|

[Parse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.42 μs | 1.21 μs | 0.85 | 0.23 | False | | |
|

[ParseSpan - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.34 μs | 1.15 μs | 0.86 | 0.23 | False | | |
|

[ParseSpan - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 2.61 μs | 2.35 μs | 0.90 | 0.26 | False | | |
|

[Parse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 2.63 μs | 2.43 μs | 0.93 | 0.25 | 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.Tests.Perf_UInt32*'
```

### System.Tests.Perf_UInt32.TryParse(value: "0")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt32.Parse(value: "0")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt32.ParseSpan(value: "0")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt32.ParseSpan(value: "12345")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt32.Parse(value: "12345")

#### 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

### Improvements in System.Tests.Perf_UInt64

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

[ParseSpan - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.40 μs | 1.11 μs | 0.79 | 0.26 | False | | |
|

[Parse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.42 μs | 1.19 μs | 0.84 | 0.30 | False | | |
|

[TryParse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 2.85 μs | 2.60 μs | 0.91 | 0.21 | False | | |
|

[Parse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 2.91 μs | 2.71 μs | 0.93 | 0.25 | False | | |
|

[ParseSpan - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 2.86 μs | 2.72 μs | 0.95 | 0.17 | 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.Tests.Perf_UInt64*'
```

### System.Tests.Perf_UInt64.ParseSpan(value: "0")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt64.Parse(value: "0")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt64.TryParse(value: "12345")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt64.Parse(value: "12345")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt64.ParseSpan(value: "12345")

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Improvements in System.Tests.Perf_Int32

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

[Parse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.63 μs | 1.40 μs | 0.86 | 0.23 | False | | |
|

[ParseSpan - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.59 μs | 1.39 μs | 0.88 | 0.27 | False | | |
|

[ParseHex - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 2.27 μs | 1.99 μs | 0.88 | 0.21 | 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 'System.Tests.Perf_Int32*'
```

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

#### ETL Files

#### Histogram

#### JIT Disasms

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

#### ETL Files

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#### JIT Disasms

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

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#### JIT Disasms

### Docs

---

### Run Information

### Improvements in System.Tests.Perf_Int64

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

[ParseSpan - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 3.57 μs | 2.97 μs | 0.83 | 0.21 | False | | |
|

[TryParseSpan - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 3.56 μs | 3.00 μs | 0.84 | 0.24 | False | | |
|

[Parse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 3.29 μs | 2.96 μs | 0.90 | 0.22 | 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 'System.Tests.Perf_Int64*'
```

### System.Tests.Perf_Int64.ParseSpan(value: "12345")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_Int64.TryParseSpan(value: "12345")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_Int64.Parse(value: "12345")

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Improvements in System.Tests.Perf_UInt16

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

[Parse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.43 μs | 1.19 μs | 0.83 | 0.20 | False | | |
|

[TryParse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.37 μs | 1.15 μs | 0.84 | 0.25 | False | | |
|

[Parse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 3.10 μs | 2.80 μs | 0.90 | 0.25 | 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 'System.Tests.Perf_UInt16*'
```

### System.Tests.Perf_UInt16.Parse(value: "0")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt16.TryParse(value: "0")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt16.Parse(value: "12345")

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Improvements in Microsoft.Extensions.Configuration.ConfigurationBinderBenchmarks

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

[Get - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 108.43 ms | 98.75 ms | 0.91 | 0.16 | False | | |
|

[Get - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

[Get - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 863.04 ms | 812.37 ms | 0.94 | 0.15 | 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 'Microsoft.Extensions.Configuration.ConfigurationBinderBenchmarks*'
```

### Microsoft.Extensions.Configuration.ConfigurationBinderBenchmarks.Get(ConfigurationProvidersCount: 8, KeysCountPerProvider: 20)

#### ETL Files

#### Histogram

#### JIT Disasms

### Microsoft.Extensions.Configuration.ConfigurationBinderBenchmarks.Get(ConfigurationProvidersCount: 32, KeysCountPerProvider: 40)

#### ETL Files

#### Histogram

#### JIT Disasms

### Microsoft.Extensions.Configuration.ConfigurationBinderBenchmarks.Get(ConfigurationProvidersCount: 32, KeysCountPerProvider: 10)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Improvements in System.Tests.Perf_Byte

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

[TryParse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.34 μs | 1.15 μs | 0.86 | 0.20 | False | | |
|

[Parse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 2.36 μs | 2.21 μs | 0.94 | 0.28 | 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Byte*'
```

### System.Tests.Perf_Byte.TryParse(value: "0")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_Byte.Parse(value: "255")

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Improvements in System.Tests.Perf_Int16

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

[TryParse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.42 μs | 1.11 μs | 0.79 | 0.24 | False | | |
|

[Parse - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.42 μs | 1.26 μs | 0.88 | 0.25 | 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Int16*'
```

### System.Tests.Perf_Int16.TryParse(value: "0")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_Int16.Parse(value: "0")

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

---

### Run Information

### Improvements in System.Tests.Perf_String

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

[ToUpper - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.32 μs | 1.05 μs | 0.79 | 0.23 | False | | |
|

[ToLower - Duration of single invocation]()
📝 - [Benchmark Source]()
[ADX - Test Multi Config Graph]()

| 1.29 μs | 1.06 μs | 0.82 | 0.25 | 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_String*'
```

### System.Tests.Perf_String.ToUpper(s: "TEST")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_String.ToLower(s: "test")

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#### JIT Disasms

### Docs

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with the linked benchmark reports and the cited sources src/benchmarks/micro/libraries/System.Runtime/Perf.UInt32.cs and Perf.UInt64.cs. Read the benchmarking workflow documentation, then run the provided benchmarks_ci.py command with the System.Tests.Perf_UInt32 filter. The issue provides performance results but does not define a requested code change or completion condition.

Written by the indexing model from the issue text.

Assessment

Tech stack: csharp, python, ubuntu, wasm
Domain: performance, testing
Issue type: Bug
Difficulty: 4/5
Estimated time: 3-5 days
Activity status: Quiet
Clarity: Needs clarification
Newbie friendliness: 25/100

[Perf] Linux/x64: 33 Improvements on 6/18/2026 7:52:57 AM +00:00

Description

Contributor guide

Research direction

Assessment

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