[Perf] Linux/arm64: 4 Regressions on 12/26/2024 9:20:31 PM

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [f3d43efa514a87f04aa994749409297e8f3e94e2](https://github.com/dotnet/runtime/commit/f3d43efa514a87f04aa994749409297e8f3e94e2)
Compare | [194ad1667552ed2538bbbb83e336979b02ae6482](https://github.com/dotnet/runtime/commit/194ad1667552ed2538bbbb83e336979b02ae6482)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f3d43efa514a87f04aa994749409297e8f3e94e2...194ad1667552ed2538bbbb83e336979b02ae6482)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.Json.Serialization.Tests.WriteJson&lt;HashSet&lt;String&gt;&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[SerializeToWriter - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Text.Json.Serialization.Tests.WriteJson(HashSet(String)).SerializeToWriter(Mode%3a%20SourceGen).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Serializer/WriteJson.cs#L81-#L87>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 4.15 μs | 4.56 μs | 1.10 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_02_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Serialization.Tests.WriteJson%28HashSet%28String%29%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_02_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Serialization.Tests.WriteJson%28HashSet%28String%29%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.Text.Json.Serialization.Tests.WriteJson&lt;HashSet&lt;String&gt;&gt;*'
```

<details>

### System.Text.Json.Serialization.Tests.WriteJson&lt;HashSet&lt;String&gt;&gt;.SerializeToWriter(Mode: SourceGen)

#### 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 | [f3d43efa514a87f04aa994749409297e8f3e94e2](https://github.com/dotnet/runtime/commit/f3d43efa514a87f04aa994749409297e8f3e94e2)
Compare | [194ad1667552ed2538bbbb83e336979b02ae6482](https://github.com/dotnet/runtime/commit/194ad1667552ed2538bbbb83e336979b02ae6482)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f3d43efa514a87f04aa994749409297e8f3e94e2...194ad1667552ed2538bbbb83e336979b02ae6482)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.Json.Serialization.Tests.WriteJson&lt;ImmutableDictionary&lt;String, String&gt;&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[SerializeToWriter - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Text.Json.Serialization.Tests.WriteJson(ImmutableDictionary(String%2c%20String)).SerializeToWriter(Mode%3a%20SourceGen).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Serializer/WriteJson.cs#L81-#L87>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 14.58 μs | 16.53 μs | 1.13 | 0.23 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_02_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Serialization.Tests.WriteJson%28ImmutableDictionary%28String%2C%20String%29%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_02_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Serialization.Tests.WriteJson%28ImmutableDictionary%28String%2C%20String%29%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.Text.Json.Serialization.Tests.WriteJson&lt;ImmutableDictionary&lt;String, String&gt;&gt;*'
```

<details>

### System.Text.Json.Serialization.Tests.WriteJson&lt;ImmutableDictionary&lt;String, String&gt;&gt;.SerializeToWriter(Mode: SourceGen)

#### 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 | [f3d43efa514a87f04aa994749409297e8f3e94e2](https://github.com/dotnet/runtime/commit/f3d43efa514a87f04aa994749409297e8f3e94e2)
Compare | [194ad1667552ed2538bbbb83e336979b02ae6482](https://github.com/dotnet/runtime/commit/194ad1667552ed2538bbbb83e336979b02ae6482)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f3d43efa514a87f04aa994749409297e8f3e94e2...194ad1667552ed2538bbbb83e336979b02ae6482)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.Json.Serialization.Tests.WriteJson&lt;LoginViewModel&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[SerializeToWriter - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Text.Json.Serialization.Tests.WriteJson(LoginViewModel).SerializeToWriter(Mode%3a%20SourceGen).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Serializer/WriteJson.cs#L81-#L87>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 161.87 ns | 174.63 ns | 1.08 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_02_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Serialization.Tests.WriteJson%28LoginViewModel%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_02_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Serialization.Tests.WriteJson%28LoginViewModel%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.Text.Json.Serialization.Tests.WriteJson&lt;LoginViewModel&gt;*'
```

<details>

### System.Text.Json.Serialization.Tests.WriteJson&lt;LoginViewModel&gt;.SerializeToWriter(Mode: SourceGen)

#### 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 | [f3d43efa514a87f04aa994749409297e8f3e94e2](https://github.com/dotnet/runtime/commit/f3d43efa514a87f04aa994749409297e8f3e94e2)
Compare | [194ad1667552ed2538bbbb83e336979b02ae6482](https://github.com/dotnet/runtime/commit/194ad1667552ed2538bbbb83e336979b02ae6482)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f3d43efa514a87f04aa994749409297e8f3e94e2...194ad1667552ed2538bbbb83e336979b02ae6482)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.Json.Tests.Perf_Basic

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[WriteBasicUtf8 - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted%3a%20False%2c%20SkipValidation%3a%20False%2c%20DataSize%3a%20100000).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Utf8JsonWriter/Perf.Basic.cs#L60-#L92>)</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 ms | 2.62 ms | 1.21 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_02_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Tests.Perf_Basic_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/01_02_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Tests.Perf_Basic.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.Text.Json.Tests.Perf_Basic*'
```

<details>

### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: False, DataSize: 100000)

#### 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	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	f3d43efa514a87f04aa994749409297e8f3e94e2
Compare	194ad1667552ed2538bbbb83e336979b02ae6482
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

[Perf] Linux/arm64: 4 Regressions on 12/26/2024 9:20:31 PM #111039

Description

Run Information

Regressions in System.Text.Json.Serialization.Tests.WriteJson<HashSet<String>>

Repro

System.Text.Json.Serialization.Tests.WriteJson<HashSet<String>>.SerializeToWriter(Mode: SourceGen)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Text.Json.Serialization.Tests.WriteJson<ImmutableDictionary<String, String>>

Repro

System.Text.Json.Serialization.Tests.WriteJson<ImmutableDictionary<String, String>>.SerializeToWriter(Mode: SourceGen)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Text.Json.Serialization.Tests.WriteJson<LoginViewModel>

Repro

System.Text.Json.Serialization.Tests.WriteJson<LoginViewModel>.SerializeToWriter(Mode: SourceGen)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Text.Json.Tests.Perf_Basic

Repro

System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: False, DataSize: 100000)

ETL Files

Histogram

JIT Disasms

Docs

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