[Perf] Linux/arm64: 3 Regressions on 1/2/2025 10:31:10 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [511d26611c051c56e546404ea616c220cc78817c](https://github.com/dotnet/runtime/commit/511d26611c051c56e546404ea616c220cc78817c)
Compare | [efdd29953304f1fc494bb45c5785d37961c4a14b](https://github.com/dotnet/runtime/commit/efdd29953304f1fc494bb45c5785d37961c4a14b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/511d26611c051c56e546404ea616c220cc78817c...efdd29953304f1fc494bb45c5785d37961c4a14b)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Tests.Perf_Uri

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[EscapeDataString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Tests.Perf_Uri.EscapeDataString(input%3a%20%22%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b%7b.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.Uri.cs#L94-#L96>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 7.04 μs | 7.95 μs | 1.13 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_09_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Tests.Perf_Uri_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_09_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Tests.Perf_Uri.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.Tests.Perf_Uri*'
```

<details>

### System.Tests.Perf_Uri.EscapeDataString(input: "{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{")

#### 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 | [511d26611c051c56e546404ea616c220cc78817c](https://github.com/dotnet/runtime/commit/511d26611c051c56e546404ea616c220cc78817c)
Compare | [efdd29953304f1fc494bb45c5785d37961c4a14b](https://github.com/dotnet/runtime/commit/efdd29953304f1fc494bb45c5785d37961c4a14b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/511d26611c051c56e546404ea616c220cc78817c...efdd29953304f1fc494bb45c5785d37961c4a14b)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Buffers.Tests.ReadOnlySequenceTests&lt;Byte&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IterateForEachSingleSegment - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Buffers.Tests.ReadOnlySequenceTests(Byte).IterateForEachSingleSegment.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Buffers/ReadOnlySequenceTests.cs#L111-#L113>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 11.04 ns | 14.73 ns | 1.33 | 0.57 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_09_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Buffers.Tests.ReadOnlySequenceTests%28Byte%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_09_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Buffers.Tests.ReadOnlySequenceTests%28Byte%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.Buffers.Tests.ReadOnlySequenceTests&lt;Byte&gt;*'
```

<details>

### System.Buffers.Tests.ReadOnlySequenceTests&lt;Byte&gt;.IterateForEachSingleSegment

#### 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 | [511d26611c051c56e546404ea616c220cc78817c](https://github.com/dotnet/runtime/commit/511d26611c051c56e546404ea616c220cc78817c)
Compare | [efdd29953304f1fc494bb45c5785d37961c4a14b](https://github.com/dotnet/runtime/commit/efdd29953304f1fc494bb45c5785d37961c4a14b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/511d26611c051c56e546404ea616c220cc78817c...efdd29953304f1fc494bb45c5785d37961c4a14b)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in PerfLabTests.LowLevelPerf

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[InterfaceInterfaceMethodLongHierarchy - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/PerfLabTests.LowLevelPerf.InterfaceInterfaceMethodLongHierarchy.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/LowLevelPerf.cs#L141-#L148>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 302.86 μs | 334.26 μs | 1.10 | 0.05 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_09_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/PerfLabTests.LowLevelPerf_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_09_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/PerfLabTests.LowLevelPerf.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 'PerfLabTests.LowLevelPerf*'
```

<details>

### PerfLabTests.LowLevelPerf.InterfaceInterfaceMethodLongHierarchy

#### 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 Regressions on 1/2/2025 10:31:10 AM +00:00 #47866

Run Information

Regressions in System.Tests.Perf_Uri

Repro

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Buffers.Tests.ReadOnlySequenceTests<Byte>

Repro

System.Buffers.Tests.ReadOnlySequenceTests<Byte>.IterateForEachSingleSegment

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in PerfLabTests.LowLevelPerf

Repro

PerfLabTests.LowLevelPerf.InterfaceInterfaceMethodLongHierarchy

ETL Files

Histogram

JIT Disasms

Docs

Metadata

Assignees

Labels

Type

Projects

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Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	511d26611c051c56e546404ea616c220cc78817c
Compare	efdd29953304f1fc494bb45c5785d37961c4a14b
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

[Perf] Linux/arm64: 3 Regressions on 1/2/2025 10:31:10 AM +00:00 #47866

Description

Run Information

Regressions in System.Tests.Perf_Uri

Repro

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Buffers.Tests.ReadOnlySequenceTests<Byte>

Repro

System.Buffers.Tests.ReadOnlySequenceTests<Byte>.IterateForEachSingleSegment

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in PerfLabTests.LowLevelPerf

Repro

PerfLabTests.LowLevelPerf.InterfaceInterfaceMethodLongHierarchy

ETL Files

Histogram

JIT Disasms

Docs

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions