dotnet / dotnet/perf-autofiling-issues

[Perf] Linux/x64: 1 Regression on 6/21/2026 8:56:59 AM +00:00

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arch-x64 branch-11.0 compilationmode-tiered kind-imagesharp Look Again os-linux perf-regression runkind-imagesharp runtime-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [a065c06c0c5f5647d8e312fc70dec3f5ca77b830](https://github.com/dotnet/sdk/commit/a065c06c0c5f5647d8e312fc70dec3f5ca77b830)
Compare | [b756a8d8a0e64905e16c81911bb09a8110bc3395](https://github.com/dotnet/sdk/commit/b756a8d8a0e64905e16c81911bb09a8110bc3395)
Diff | [Diff](https://github.com/dotnet/sdk/compare/a065c06c0c5f5647d8e312fc70dec3f5ca77b830...b756a8d8a0e64905e16c81911bb09a8110bc3395)
Configs | CompilationMode:tiered, RunKind:imagesharp

### Regressions in SixLabors.ImageSharp.Benchmarks.Codecs.DecodeTga

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

  • [TgaImageSharp - Duration of single invocation]()
  • 📝 - [Benchmark Source]()
  • [ADX - Test Multi Config Graph]()
| 7.23 μs | 9.19 μs | 1.27 | 0.00 | True | | |

![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.DecodeTga*'
```

### SixLabors.ImageSharp.Benchmarks.Codecs.DecodeTga.TgaImageSharp(TestImage: "Tga/targa_24bit.tga")

#### 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)

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with src/benchmarks/real-world/ImageSharp/Codecs/DecodeTga.cs and run the documented benchmarks_ci.py command with the DecodeTga filter. Compare the baseline and test commits and use the linked benchmark and regression reports to identify the cause. Done means the Linux/x64 benchmark no longer shows the reported regression and the result is validated with the same workflow.

Written by the indexing model from the issue text.

Assessment

Domain
performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
38/100

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