[Perf] Linux/x64: 8 Regressions on 6/25/2025 10:56:24 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [c0c7f02be7285a1ef0d3022b8c2f38be4025545f](https://github.com/dotnet/runtime/commit/c0c7f02be7285a1ef0d3022b8c2f38be4025545f)
Compare | [ba14314409cec9071b73301fd044060c621f7439](https://github.com/dotnet/runtime/commit/ba14314409cec9071b73301fd044060c621f7439)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c0c7f02be7285a1ef0d3022b8c2f38be4025545f...ba14314409cec9071b73301fd044060c621f7439)
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>[GroupBy00AggregateByX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/LinqBenchmarks.GroupBy00AggregateByX.html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.16 secs | 2.34 secs | 1.08 | 0.03 | False | | |
|<ul><li>[CountBy00AggregateByX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/LinqBenchmarks.CountBy00AggregateByX.html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.28 secs | 1.51 secs | 1.18 | 0.07 | False | | |
|<ul><li>[CountBy00LinqMethodX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/LinqBenchmarks.CountBy00LinqMethodX.html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.18 secs | 1.35 secs | 1.14 | 0.12 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/LinqBenchmarks_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/LinqBenchmarks_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/LinqBenchmarks_003.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_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.GroupBy00AggregateByX

#### ETL Files

#### Histogram

#### JIT Disasms

### LinqBenchmarks.CountBy00AggregateByX

#### ETL Files

#### Histogram

#### JIT Disasms

### LinqBenchmarks.CountBy00LinqMethodX

#### 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>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [c0c7f02be7285a1ef0d3022b8c2f38be4025545f](https://github.com/dotnet/runtime/commit/c0c7f02be7285a1ef0d3022b8c2f38be4025545f)
Compare | [ba14314409cec9071b73301fd044060c621f7439](https://github.com/dotnet/runtime/commit/ba14314409cec9071b73301fd044060c621f7439)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c0c7f02be7285a1ef0d3022b8c2f38be4025545f...ba14314409cec9071b73301fd044060c621f7439)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in ArrayDeAbstraction

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[foreach_static_readonly_array_via_interface_property - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/ArrayDeAbstraction.foreach_static_readonly_array_via_interface_property.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/DeAbstraction/Array.cs#L80-#L87>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 163.44 ns | 633.57 ns | 3.88 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/ArrayDeAbstraction_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/ArrayDeAbstraction.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 'ArrayDeAbstraction*'
```

<details>

### ArrayDeAbstraction.foreach_static_readonly_array_via_interface_property

#### 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>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [c0c7f02be7285a1ef0d3022b8c2f38be4025545f](https://github.com/dotnet/runtime/commit/c0c7f02be7285a1ef0d3022b8c2f38be4025545f)
Compare | [ba14314409cec9071b73301fd044060c621f7439](https://github.com/dotnet/runtime/commit/ba14314409cec9071b73301fd044060c621f7439)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c0c7f02be7285a1ef0d3022b8c2f38be4025545f...ba14314409cec9071b73301fd044060c621f7439)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Diagnostics.Perf_Activity

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[EnumerateActivityLinkTagsSmall - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Diagnostics.Perf_Activity.EnumerateActivityLinkTagsSmall.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Diagnostics/Perf_Activity.cs#L169-#L175>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.20 ns | 16.87 ns | 14.11 | 0.13 | False | | |
|<ul><li>[EnumerateActivityLinkTagsLarge - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Diagnostics.Perf_Activity.EnumerateActivityLinkTagsLarge.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Diagnostics/Perf_Activity.cs#L177-#L183>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.37 μs | 2.13 μs | 1.55 | 0.02 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Diagnostics.Perf_Activity_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Diagnostics.Perf_Activity_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Diagnostics.Perf_Activity.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 'System.Diagnostics.Perf_Activity*'
```

<details>

### System.Diagnostics.Perf_Activity.EnumerateActivityLinkTagsSmall

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Diagnostics.Perf_Activity.EnumerateActivityLinkTagsLarge

#### 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>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [c0c7f02be7285a1ef0d3022b8c2f38be4025545f](https://github.com/dotnet/runtime/commit/c0c7f02be7285a1ef0d3022b8c2f38be4025545f)
Compare | [ba14314409cec9071b73301fd044060c621f7439](https://github.com/dotnet/runtime/commit/ba14314409cec9071b73301fd044060c621f7439)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c0c7f02be7285a1ef0d3022b8c2f38be4025545f...ba14314409cec9071b73301fd044060c621f7439)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Linq.Tests.Perf_Enumerable

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[LastWithPredicate_FirstElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Linq.Tests.Perf_Enumerable.LastWithPredicate_FirstElementMatches(input%3a%20IList).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L95-#L97>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.85 ns | 4.83 ns | 1.70 | 0.04 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Linq.Tests.Perf_Enumerable_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Linq.Tests.Perf_Enumerable.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 'System.Linq.Tests.Perf_Enumerable*'
```

<details>

### System.Linq.Tests.Perf_Enumerable.LastWithPredicate_FirstElementMatches(input: IList)

#### 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>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [c0c7f02be7285a1ef0d3022b8c2f38be4025545f](https://github.com/dotnet/runtime/commit/c0c7f02be7285a1ef0d3022b8c2f38be4025545f)
Compare | [ba14314409cec9071b73301fd044060c621f7439](https://github.com/dotnet/runtime/commit/ba14314409cec9071b73301fd044060c621f7439)
Diff | [Diff](https://github.com/dotnet/runtime/compare/c0c7f02be7285a1ef0d3022b8c2f38be4025545f...ba14314409cec9071b73301fd044060c621f7439)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.IterateForEach&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ConcurrentBag - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.IterateForEach(Int32).ConcurrentBag(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Iterate/IterateForEach.cs#L260-#L268>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.18 μs | 1.40 μs | 1.19 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.IterateForEach%28Int32%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_01_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.IterateForEach%28Int32%29.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 'System.Collections.IterateForEach&lt;Int32&gt;*'
```

<details>

### System.Collections.IterateForEach&lt;Int32&gt;.ConcurrentBag(Size: 512)

#### 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>

Name	Value
Architecture	x64
OS	ubuntu 22.04
Queue	TigerUbuntu
Baseline	c0c7f02be7285a1ef0d3022b8c2f38be4025545f
Compare	ba14314409cec9071b73301fd044060c621f7439
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
GroupBy00AggregateByX - Duration of single invocation ADX - Test Multi Config Graph	2.16 secs	2.34 secs	1.08	0.03	False
CountBy00AggregateByX - Duration of single invocation ADX - Test Multi Config Graph	1.28 secs	1.51 secs	1.18	0.07	False
CountBy00LinqMethodX - Duration of single invocation ADX - Test Multi Config Graph	1.18 secs	1.35 secs	1.14	0.12	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
EnumerateActivityLinkTagsSmall - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.20 ns	16.87 ns	14.11	0.13	False
EnumerateActivityLinkTagsLarge - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.37 μs	2.13 μs	1.55	0.02	False

[Perf] Linux/x64: 8 Regressions on 6/25/2025 10:56:24 PM +00:00 #117204

Description

Run Information

Regressions in LinqBenchmarks

Repro

LinqBenchmarks.GroupBy00AggregateByX

ETL Files

Histogram

JIT Disasms

LinqBenchmarks.CountBy00AggregateByX

ETL Files

Histogram

JIT Disasms

LinqBenchmarks.CountBy00LinqMethodX

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in ArrayDeAbstraction

Repro

ArrayDeAbstraction.foreach_static_readonly_array_via_interface_property

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Diagnostics.Perf_Activity

Repro

System.Diagnostics.Perf_Activity.EnumerateActivityLinkTagsSmall

ETL Files

Histogram

JIT Disasms

System.Diagnostics.Perf_Activity.EnumerateActivityLinkTagsLarge

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Linq.Tests.Perf_Enumerable

Repro

System.Linq.Tests.Perf_Enumerable.LastWithPredicate_FirstElementMatches(input: IList)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.IterateForEach<Int32>

Repro

System.Collections.IterateForEach<Int32>.ConcurrentBag(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

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