[Perf] Linux/x64: 5 Regressions on 11/25/2024 10:09:05 AM

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [03498891fcfde3aca87741c0dc6eb27d48ea9310](https://github.com/dotnet/runtime/commit/03498891fcfde3aca87741c0dc6eb27d48ea9310)
Compare | [4caf064140aa70e4b917da23546a5cd501d4c2bb](https://github.com/dotnet/runtime/commit/4caf064140aa70e4b917da23546a5cd501d4c2bb)
Diff | [Diff](https://github.com/dotnet/runtime/compare/03498891fcfde3aca87741c0dc6eb27d48ea9310...4caf064140aa70e4b917da23546a5cd501d4c2bb)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Tests.Perf_Array

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IndexOfChar - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Tests.Perf_Array.IndexOfChar.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.Array.cs#L305-#L306>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 4.41 ns | 5.85 ns | 1.33 | 0.17 | False | | |
|<ul><li>[IndexOfShort - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Tests.Perf_Array.IndexOfShort.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.Array.cs#L311-#L312>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 4.46 ns | 5.88 ns | 1.32 | 0.20 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_26_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_Array_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_26_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_Array_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_26_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_Array.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_Array*'
```

<details>

### System.Tests.Perf_Array.IndexOfChar

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_Array.IndexOfShort

#### 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 | [03498891fcfde3aca87741c0dc6eb27d48ea9310](https://github.com/dotnet/runtime/commit/03498891fcfde3aca87741c0dc6eb27d48ea9310)
Compare | [4caf064140aa70e4b917da23546a5cd501d4c2bb](https://github.com/dotnet/runtime/commit/4caf064140aa70e4b917da23546a5cd501d4c2bb)
Diff | [Diff](https://github.com/dotnet/runtime/compare/03498891fcfde3aca87741c0dc6eb27d48ea9310...4caf064140aa70e4b917da23546a5cd501d4c2bb)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.Json.Tests.Utf8JsonReaderCommentsTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Utf8JsonReaderCommentParsing - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling%3a%20Allow%2c%20SegmentSize%3a%200%2c%20TestCase%3a%20LongSingleLine).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Utf8JsonReader/Utf8JsonReader.Comments.Tests.cs#L51-#L62>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 114.21 ns | 123.65 ns | 1.08 | 0.02 | False | | |
|<ul><li>[Utf8JsonReaderCommentParsing - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling%3a%20Skip%2c%20SegmentSize%3a%200%2c%20TestCase%3a%20LongSingleLine).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Utf8JsonReader/Utf8JsonReader.Comments.Tests.cs#L51-#L62>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 111.81 ns | 121.66 ns | 1.09 | 0.03 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_26_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Text.Json.Tests.Utf8JsonReaderCommentsTests_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_26_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Text.Json.Tests.Utf8JsonReaderCommentsTests_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_26_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Text.Json.Tests.Utf8JsonReaderCommentsTests.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.Utf8JsonReaderCommentsTests*'
```

<details>

### System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Allow, SegmentSize: 0, TestCase: LongSingleLine)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Skip, SegmentSize: 0, TestCase: LongSingleLine)

#### 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 | [03498891fcfde3aca87741c0dc6eb27d48ea9310](https://github.com/dotnet/runtime/commit/03498891fcfde3aca87741c0dc6eb27d48ea9310)
Compare | [4caf064140aa70e4b917da23546a5cd501d4c2bb](https://github.com/dotnet/runtime/commit/4caf064140aa70e4b917da23546a5cd501d4c2bb)
Diff | [Diff](https://github.com/dotnet/runtime/compare/03498891fcfde3aca87741c0dc6eb27d48ea9310...4caf064140aa70e4b917da23546a5cd501d4c2bb)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Memory.ReadOnlySpan

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IndexOfString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Memory.ReadOnlySpan.IndexOfString(input%3a%20%22Hello%20Worldbbbbbbbbbbbbbbcbbbbbbbbbbbbbbbbbbba!%22%2c%20value%3a%20%22y%22%2c%20comparisonType%3a%20Ordinal).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/ReadOnlySpan.cs#L45-#L65>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 7.24 ns | 8.57 ns | 1.18 | 0.13 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_26_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.ReadOnlySpan_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_26_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.ReadOnlySpan.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.Memory.ReadOnlySpan*'
```

<details>

### System.Memory.ReadOnlySpan.IndexOfString(input: "Hello Worldbbbbbbbbbbbbbbcbbbbbbbbbbbbbbbbbbba!", value: "y", comparisonType: Ordinal)

#### 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	03498891fcfde3aca87741c0dc6eb27d48ea9310
Compare	4caf064140aa70e4b917da23546a5cd501d4c2bb
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
IndexOfChar - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	4.41 ns	5.85 ns	1.33	0.17	False
IndexOfShort - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	4.46 ns	5.88 ns	1.32	0.20	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Utf8JsonReaderCommentParsing - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	114.21 ns	123.65 ns	1.08	0.02	False
Utf8JsonReaderCommentParsing - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	111.81 ns	121.66 ns	1.09	0.03	False

[Perf] Linux/x64: 5 Regressions on 11/25/2024 10:09:05 AM #110190

Description

Run Information

Regressions in System.Tests.Perf_Array

Repro

System.Tests.Perf_Array.IndexOfChar

ETL Files

Histogram

JIT Disasms

System.Tests.Perf_Array.IndexOfShort

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Text.Json.Tests.Utf8JsonReaderCommentsTests

Repro

System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Allow, SegmentSize: 0, TestCase: LongSingleLine)

ETL Files

Histogram

JIT Disasms

System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Skip, SegmentSize: 0, TestCase: LongSingleLine)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Memory.ReadOnlySpan

Repro

System.Memory.ReadOnlySpan.IndexOfString(input: "Hello Worldbbbbbbbbbbbbbbcbbbbbbbbbbbbbbbbbbba!", value: "y", comparisonType: Ordinal)

ETL Files

Histogram

JIT Disasms

Docs

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