[Perf] Linux/x64: 3 Regressions on 5/14/2026 8:53:46 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [c1edd14cf729ba6fce205c5f4509caeaaae8fbb6](https://github.com/dotnet/runtime/commit/c1edd14cf729ba6fce205c5f4509caeaaae8fbb6)
Compare | [ea32e277e519d1e08f2498c142cb55f56d681114](https://github.com/dotnet/runtime/commit/ea32e277e519d1e08f2498c142cb55f56d681114)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c1edd14cf729ba6fce205c5f4509caeaaae8fbb6...ea32e277e519d1e08f2498c142cb55f56d681114)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Tests.Perf_UInt32

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

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

| 35.20 ns | 41.35 ns | 1.17 | 0.19 | False | | |
|

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

| 39.05 ns | 45.15 ns | 1.16 | 0.18 | 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_UInt32*'
```

### System.Tests.Perf_UInt32.ToString(value: 12345)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_UInt32.ToString(value: 4294967295)

#### 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

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [c1edd14cf729ba6fce205c5f4509caeaaae8fbb6](https://github.com/dotnet/runtime/commit/c1edd14cf729ba6fce205c5f4509caeaaae8fbb6)
Compare | [ea32e277e519d1e08f2498c142cb55f56d681114](https://github.com/dotnet/runtime/commit/ea32e277e519d1e08f2498c142cb55f56d681114)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c1edd14cf729ba6fce205c5f4509caeaaae8fbb6...ea32e277e519d1e08f2498c142cb55f56d681114)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Tests.Perf_Int16

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

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

| 37.59 ns | 43.98 ns | 1.17 | 0.15 | False | | |

![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.ToString(value: 32767)

#### 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)