[Perf] Linux/x64: 8 Improvements on 12/2/2025 5:35:46 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [3871ff9b61e5278606e21d1624a1419d11384380](https://github.com/dotnet/runtime/commit/3871ff9b61e5278606e21d1624a1419d11384380)
Compare | [f204e02d03afb032f4221eae696800bcb766a778](https://github.com/dotnet/runtime/commit/f204e02d03afb032f4221eae696800bcb766a778)
Diff | [Diff](https://github.com/dotnet/runtime/compare/3871ff9b61e5278606e21d1624a1419d11384380...f204e02d03afb032f4221eae696800bcb766a778)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Text.Perf_Utf8Encoding

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

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

| 30.41 μs | 21.52 μs | 0.71 | 0.00 | False | | |
|

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

| 67.02 μs | 59.06 μs | 0.88 | 0.00 | False | | |
|

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

| 66.73 μs | 47.17 μs | 0.71 | 0.00 | False | | |
|

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

| 112.65 μs | 99.40 μs | 0.88 | 0.00 | False | | |
|

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

| 26.39 μs | 18.73 μs | 0.71 | 0.00 | False | | |
|

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

| 33.27 μs | 23.55 μs | 0.71 | 0.00 | False | | |
|

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

| 125.75 μs | 105.55 μs | 0.84 | 0.00 | False | | |
|

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

| 89.33 μs | 79.48 μs | 0.89 | 0.00 | False | | |

![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.Text.Perf_Utf8Encoding*'
```

### System.Text.Perf_Utf8Encoding.GetByteCount(Input: Chinese)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Utf8Encoding.GetBytes(Input: Cyrillic)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Utf8Encoding.GetByteCount(Input: EnglishMostlyAscii)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Utf8Encoding.GetBytes(Input: Chinese)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Utf8Encoding.GetByteCount(Input: Cyrillic)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Utf8Encoding.GetByteCount(Input: Greek)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Utf8Encoding.GetBytes(Input: EnglishMostlyAscii)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Utf8Encoding.GetBytes(Input: Greek)

#### 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)