[Perf] Linux/x64: 4 Improvements on 1/24/2026 8:35:50 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [614b68725fd6d4678494c775eafea09bda82356f](https://github.com/dotnet/runtime/commit/614b68725fd6d4678494c775eafea09bda82356f)
Compare | [b19edc085666acaf215ff60edce24cada71e2f93](https://github.com/dotnet/runtime/commit/b19edc085666acaf215ff60edce24cada71e2f93)
Diff | [Diff](https://github.com/dotnet/runtime/compare/614b68725fd6d4678494c775eafea09bda82356f...b19edc085666acaf215ff60edce24cada71e2f93)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Text.Tests.Perf_Encoding

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

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

| 7.91 ns | 6.60 ns | 0.83 | 0.33 | False | | |
|

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

| 8.29 ns | 6.56 ns | 0.79 | 0.34 | False | | |
|

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

| 8.86 ns | 6.87 ns | 0.78 | 0.35 | False | | |
|

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

| 8.18 ns | 6.91 ns | 0.85 | 0.33 | False | | |

![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.Tests.Perf_Encoding*'
```

### System.Text.Tests.Perf_Encoding.GetEncoder(size: 16, encName: "utf-8")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Tests.Perf_Encoding.GetEncoder(size: 16, encName: "ascii")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Tests.Perf_Encoding.GetEncoder(size: 512, encName: "ascii")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Tests.Perf_Encoding.GetEncoder(size: 512, encName: "utf-8")

#### 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)