[Perf] Linux/x64: 2 Regressions on 7/29/2025 4:24:24 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [a8fee605084efb04f3c300ecb317f6b0fcdf3f99](https://github.com/dotnet/runtime/commit/a8fee605084efb04f3c300ecb317f6b0fcdf3f99)
Compare | [97d94229eb62859038cd05fb864fd39e9be0a1a0](https://github.com/dotnet/runtime/commit/97d94229eb62859038cd05fb864fd39e9be0a1a0)
Diff | [Diff](https://github.com/dotnet/runtime/compare/a8fee605084efb04f3c300ecb317f6b0fcdf3f99...97d94229eb62859038cd05fb864fd39e9be0a1a0)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in LinqBenchmarks

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Where01LinqMethodNestedX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/LinqBenchmarks.Where01LinqMethodNestedX.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Linq/Linq.cs#L236-#L252>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 213.14 ms | 247.44 ms | 1.16 | 0.04 | False | | |
|<ul><li>[Where00LinqQueryX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/LinqBenchmarks.Where00LinqQueryX.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Linq/Linq.cs#L127-#L146>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 246.73 ms | 312.97 ms | 1.27 | 0.07 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_05_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/LinqBenchmarks_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_05_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/LinqBenchmarks_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_05_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/LinqBenchmarks.html>)

### 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 'LinqBenchmarks*'
```

<details>

### LinqBenchmarks.Where01LinqMethodNestedX

#### ETL Files

#### Histogram

#### JIT Disasms

### LinqBenchmarks.Where00LinqQueryX

#### 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)

</details>

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Uh oh!

[Perf] Linux/x64: 2 Regressions on 7/29/2025 4:24:24 PM +00:00 #118399

Run Information

Regressions in LinqBenchmarks

Repro

LinqBenchmarks.Where01LinqMethodNestedX

ETL Files

Histogram

JIT Disasms

LinqBenchmarks.Where00LinqQueryX

ETL Files

Histogram

JIT Disasms

Docs

Metadata

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Name	Value
Architecture	x64
OS	ubuntu 22.04
Queue	TigerUbuntu
Baseline	a8fee605084efb04f3c300ecb317f6b0fcdf3f99
Compare	97d94229eb62859038cd05fb864fd39e9be0a1a0
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Where01LinqMethodNestedX - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	213.14 ms	247.44 ms	1.16	0.04	False
Where00LinqQueryX - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	246.73 ms	312.97 ms	1.27	0.07	False

Uh oh!

[Perf] Linux/x64: 2 Regressions on 7/29/2025 4:24:24 PM +00:00 #118399

Description

Run Information

Regressions in LinqBenchmarks

Repro

LinqBenchmarks.Where01LinqMethodNestedX

ETL Files

Histogram

JIT Disasms

LinqBenchmarks.Where00LinqQueryX

ETL Files

Histogram

JIT Disasms

Docs

Metadata

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Issue actions