[Perf] Linux/x64: 5 Regressions on 6/15/2024 7:24:14 PM

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [5ba3c05f3bf0ea789421c6e69d3983ecdc086f36](https://github.com/dotnet/runtime/commit/5ba3c05f3bf0ea789421c6e69d3983ecdc086f36)
Compare | [87cd2c4257bd21e84d3d6990f55465be01f63399](https://github.com/dotnet/runtime/commit/87cd2c4257bd21e84d3d6990f55465be01f63399)
Diff | [Diff](https://github.com/dotnet/runtime/compare/5ba3c05f3bf0ea789421c6e69d3983ecdc086f36...87cd2c4257bd21e84d3d6990f55465be01f63399)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Memory.Span&lt;Char&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Fill - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Memory.Span(Char).Fill(Size%3a%2033).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L43-#L44>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.62 ns | 9.02 ns | 3.44 | 0.10 | True | | |
|<ul><li>[Fill - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Memory.Span(Char).Fill(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L43-#L44>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 12.60 ns | 17.79 ns | 1.41 | 0.44 | False | | |
|<ul><li>[LastIndexOfValue - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Memory.Span(Char).LastIndexOfValue(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L93-#L94>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.31 ns | 10.36 ns | 1.11 | 0.15 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_18_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.Span%28Char%29_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_18_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.Span%28Char%29_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_18_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.Span%28Char%29_3.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_18_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Memory.Span%28Char%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.Memory.Span&lt;Char&gt;*'
```

<details>

### System.Memory.Span&lt;Char&gt;.Fill(Size: 33)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Char&gt;.Fill(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Char&gt;.LastIndexOfValue(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>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [7e9cab2bd10c19bbe9a8212ab1071e6d03f729d7](https://github.com/dotnet/runtime/commit/7e9cab2bd10c19bbe9a8212ab1071e6d03f729d7)
Compare | [87cd2c4257bd21e84d3d6990f55465be01f63399](https://github.com/dotnet/runtime/commit/87cd2c4257bd21e84d3d6990f55465be01f63399)
Diff | [Diff](https://github.com/dotnet/runtime/compare/7e9cab2bd10c19bbe9a8212ab1071e6d03f729d7...87cd2c4257bd21e84d3d6990f55465be01f63399)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in Span.IndexerBench

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[SameIndex1 - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/Span.IndexerBench.SameIndex1(length%3a%201024).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Span/Indexer.cs#L349-#L351>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 537.21 ns | 603.95 ns | 1.12 | 0.03 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_18_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/Span.IndexerBench_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_18_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/Span.IndexerBench.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 'Span.IndexerBench*'
```

<details>

### Span.IndexerBench.SameIndex1(length: 1024)

#### 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 | [7e9cab2bd10c19bbe9a8212ab1071e6d03f729d7](https://github.com/dotnet/runtime/commit/7e9cab2bd10c19bbe9a8212ab1071e6d03f729d7)
Compare | [87cd2c4257bd21e84d3d6990f55465be01f63399](https://github.com/dotnet/runtime/commit/87cd2c4257bd21e84d3d6990f55465be01f63399)
Diff | [Diff](https://github.com/dotnet/runtime/compare/7e9cab2bd10c19bbe9a8212ab1071e6d03f729d7...87cd2c4257bd21e84d3d6990f55465be01f63399)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.Perf_Ascii

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[EqualsIgnoreCase_DifferentCase_Chars - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Text.Perf_Ascii.EqualsIgnoreCase_DifferentCase_Chars(Size%3a%206).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Ascii.cs#L70-#L72>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.72 ns | 11.58 ns | 1.19 | 0.04 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_18_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Text.Perf_Ascii_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_18_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Text.Perf_Ascii.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.Perf_Ascii*'
```

<details>

### System.Text.Perf_Ascii.EqualsIgnoreCase_DifferentCase_Chars(Size: 6)

#### 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	5ba3c05f3bf0ea789421c6e69d3983ecdc086f36
Compare	87cd2c4257bd21e84d3d6990f55465be01f63399
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
Fill - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	2.62 ns	9.02 ns	3.44	0.10	True
Fill - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	12.60 ns	17.79 ns	1.41	0.44	False
LastIndexOfValue - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.31 ns	10.36 ns	1.11	0.15	False

[Perf] Linux/x64: 5 Regressions on 6/15/2024 7:24:14 PM #36406

Description

Run Information

Regressions in System.Memory.Span<Char>

Repro

System.Memory.Span<Char>.Fill(Size: 33)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Char>.Fill(Size: 512)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Char>.LastIndexOfValue(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in Span.IndexerBench

Repro

Span.IndexerBench.SameIndex1(length: 1024)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Text.Perf_Ascii

Repro

System.Text.Perf_Ascii.EqualsIgnoreCase_DifferentCase_Chars(Size: 6)

ETL Files

Histogram

JIT Disasms

Docs

Metadata

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