[Perf] Linux/arm64: 3 Improvements on 7/7/2025 10:56:34 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [eef526e6d1d767e0797cc4471f05012c08d7733e](https://github.com/dotnet/runtime/commit/eef526e6d1d767e0797cc4471f05012c08d7733e)
Compare | [d751cbc4dccf671024760adf5b1c5400cd9eb045](https://github.com/dotnet/runtime/commit/d751cbc4dccf671024760adf5b1c5400cd9eb045)
Diff | [Diff](https://github.com/dotnet/runtime/compare/eef526e6d1d767e0797cc4471f05012c08d7733e...d751cbc4dccf671024760adf5b1c5400cd9eb045)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in System.Linq.Tests.Perf_Enumerable

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Count - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Linq.Tests.Perf_Enumerable.Count(input%3a%20ICollection).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L344-#L346>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.32 ns | 1.14 ns | 0.49 | 0.40 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_10_2025/refs/heads/main_arm64_ubuntu%2022.04_Improvement/System.Linq.Tests.Perf_Enumerable_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_10_2025/refs/heads/main_arm64_ubuntu%2022.04_Improvement/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.Count(input: ICollection)

#### 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 | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [eef526e6d1d767e0797cc4471f05012c08d7733e](https://github.com/dotnet/runtime/commit/eef526e6d1d767e0797cc4471f05012c08d7733e)
Compare | [d751cbc4dccf671024760adf5b1c5400cd9eb045](https://github.com/dotnet/runtime/commit/d751cbc4dccf671024760adf5b1c5400cd9eb045)
Diff | [Diff](https://github.com/dotnet/runtime/compare/eef526e6d1d767e0797cc4471f05012c08d7733e...d751cbc4dccf671024760adf5b1c5400cd9eb045)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements 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_arm64_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> | 52.96 ns | 3.66 ns | 0.07 | 0.18 | False | | |
|<ul><li>[EnumerateActivityLinkTagsLarge - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_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> | 7.57 μs | 1.38 μs | 0.18 | 0.04 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_10_2025/refs/heads/main_arm64_ubuntu%2022.04_Improvement/System.Diagnostics.Perf_Activity_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_10_2025/refs/heads/main_arm64_ubuntu%2022.04_Improvement/System.Diagnostics.Perf_Activity_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_10_2025/refs/heads/main_arm64_ubuntu%2022.04_Improvement/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>

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[Perf] Linux/arm64: 3 Improvements on 7/7/2025 10:56:34 PM +00:00 #59090

Run Information

Improvements in System.Linq.Tests.Perf_Enumerable

Repro

System.Linq.Tests.Perf_Enumerable.Count(input: ICollection)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Improvements 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

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	eef526e6d1d767e0797cc4471f05012c08d7733e
Compare	d751cbc4dccf671024760adf5b1c5400cd9eb045
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

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	52.96 ns	3.66 ns	0.07	0.18	False
EnumerateActivityLinkTagsLarge - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	7.57 μs	1.38 μs	0.18	0.04	False

[Perf] Linux/arm64: 3 Improvements on 7/7/2025 10:56:34 PM +00:00 #59090

Description

Run Information

Improvements in System.Linq.Tests.Perf_Enumerable

Repro

System.Linq.Tests.Perf_Enumerable.Count(input: ICollection)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Improvements 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

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions