[Perf] Linux/arm64: 1 Improvement on 7/9/2026 8:21:55 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | azurelinux 3.0
Queue | CobaltAzureLinux
Baseline | [e302d2a27aef2196c8d710752da8b7726c5fe84d](https://github.com/dotnet/runtime/commit/e302d2a27aef2196c8d710752da8b7726c5fe84d)
Compare | [0dc2424cb92416af77d8d38292cdcdffa699bd67](https://github.com/dotnet/runtime/commit/0dc2424cb92416af77d8d38292cdcdffa699bd67)
Diff | [Diff](https://github.com/dotnet/runtime/compare/e302d2a27aef2196c8d710752da8b7726c5fe84d...0dc2424cb92416af77d8d38292cdcdffa699bd67)
Configs | CompilationMode:tiered, R2RType:r2r_interpreter, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_BigInteger

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

• [Ctor_ByteArray - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Numerics.Tests.Perf_BigInteger*'
```

### System.Numerics.Tests.Perf_BigInteger.Ctor_ByteArray(numberString: -2147483648)

#### 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)

Start with the System.Numerics.Tests.Perf_BigInteger.Ctor_ByteArray benchmark source linked in the issue, then run the provided benchmarks_ci.py command with the System.Numerics.Tests.Perf_BigInteger filter. Compare the ARM64 results and investigate the reported 0.89 Test/Base improvement; completion criteria are not specified by the issue.

Written by the indexing model from the issue text.