dotnet / dotnet/perf-autofiling-issues

[Perf] Windows/arm64: 6 Regressions on 7/31/2026 9:16:56 AM +00:00

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arch-arm64 branch-refs/heads/main codegentype-r2r compilationmode-tiered kind-android_scenarios linkingtype-dynamic Noise os-windows perf-regression runkind-android_scenarios runtime-coreclr runtimetype-coreclr untriaged
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Description

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | Windows 10.0.22621
Queue | Pixel
Baseline | [a7bb6dfe4ab5ba1804be80698cf138a65e9c0370](https://github.com/dotnet/runtime/commit/a7bb6dfe4ab5ba1804be80698cf138a65e9c0370)
Compare | [974b4b56b05ffe12857f731320f4b235bf36169c](https://github.com/dotnet/runtime/commit/974b4b56b05ffe12857f731320f4b235bf36169c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/a7bb6dfe4ab5ba1804be80698cf138a65e9c0370...974b4b56b05ffe12857f731320f4b235bf36169c)
Configs | CodeGenType:R2R, CompilationMode:tiered, LinkingType:dynamic, RunKind:android_scenarios, RuntimeType:coreclr

### Regressions in SOD - Android HelloWorld Extracted Size

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

  • [SOD - Android HelloWorld Extracted Size - pub\lib\arm64-v8a\libcoreclr.so]()
  • [ADX - Test Multi Config Graph]()
| 4.62 MB | 4.62 MB | 1.00 | 0.00 | True | | |
|
  • [SOD - Android HelloWorld Extracted Size - SOD - Android HelloWorld Extracted Size]()
  • [ADX - Test Multi Config Graph]()
| 16.20 MB | 16.22 MB | 1.00 | 0.00 | True | | |
|
  • [SOD - Android HelloWorld Extracted Size - Aggregate - .dll]()
  • [ADX - Test Multi Config Graph]()
| 7.35 MB | 7.37 MB | 1.00 | 0.00 | True | | |
|
  • [SOD - Android HelloWorld Extracted Size - pub]()
  • [ADX - Test Multi Config Graph]()
| 16.20 MB | 16.22 MB | 1.00 | 0.00 | True | | |
|
  • [SOD - Android HelloWorld Extracted Size - pub\lib\arm64-v8a\libclrjit.so]()
  • [ADX - Test Multi Config Graph]()
| 2.65 MB | 2.66 MB | 1.00 | 0.00 | True | | |
|
  • [SOD - Android HelloWorld Extracted Size - pub\assets\System.Private.CoreLib.dll]()
  • [ADX - Test Multi Config Graph]()
| 6.64 MB | 6.66 MB | 1.00 | 0.00 | True | | |

![graph]()
![graph]()
![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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'SOD - Android HelloWorld Extracted Size*'
```

### SOD - Android HelloWorld Extracted Size

#### 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 the linked baseline/compare commits and the SOD - Android HelloWorld Extracted Size report for the Windows/arm64 Pixel run. Reproduce with the provided benchmarks_ci.py command, then inspect the report and graphs to identify the source of the six size regressions. Done means the regression is explained and the affected benchmark returns to the expected baseline.

Written by the indexing model from the issue text.

Assessment

Tech stack
android
Domain
performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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