[Perf] Linux/x64: 1 Regression on 8/14/2026 9:42:13 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [283314d5d7f2d77d1a31087ec962a4c407106445](https://github.com/dotnet/sdk/commit/283314d5d7f2d77d1a31087ec962a4c407106445)
Compare | [7cdb217445905f3342bbb0266a4497b9a014389a](https://github.com/dotnet/sdk/commit/7cdb217445905f3342bbb0266a4497b9a014389a)
Diff | [Diff](https://github.com/dotnet/sdk/compare/283314d5d7f2d77d1a31087ec962a4c407106445...7cdb217445905f3342bbb0266a4497b9a014389a)
Configs | CompilationMode:tiered, RunKind:imagesharp

### Regressions in SixLabors.ImageSharp.Benchmarks.Codecs.Jpeg.DecodeJpeg

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

• [JpegBaselineInterleaved420 - 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'SixLabors.ImageSharp.Benchmarks.Codecs.Jpeg.DecodeJpeg*'
```

### SixLabors.ImageSharp.Benchmarks.Codecs.Jpeg.DecodeJpeg.JpegBaselineInterleaved420

#### 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 scripts/benchmarks_ci.py and the documented benchmarking workflow, using the SixLabors.ImageSharp.Benchmarks.Codecs.Jpeg.DecodeJpeg* filter to reproduce the reported Ubuntu 22.04 regression. Read the benchmark source at DecodeJpeg.cs#L57-L58 and compare the linked baseline, test, and report; done means the regression is explained and the benchmark result no longer shows the reported slowdown.

Written by the indexing model from the issue text.