[Perf] Linux/x64: 6 Regressions on 11/1/2024 7:42:33 PM

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [357b09da5abffaeb67d64c928e15293ca2a2de5e](https://github.com/dotnet/runtime/commit/357b09da5abffaeb67d64c928e15293ca2a2de5e)
Compare | [a9ca41321284c0d1e423bfc240e9c9f8be970b8b](https://github.com/dotnet/runtime/commit/a9ca41321284c0d1e423bfc240e9c9f8be970b8b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/357b09da5abffaeb67d64c928e15293ca2a2de5e...a9ca41321284c0d1e423bfc240e9c9f8be970b8b)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Tests.Perf_String

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ToLowerInvariant - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Tests.Perf_String.ToLowerInvariant(s%3a%20%22test%22).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.String.cs#L239-#L246>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.68 ns | 5.11 ns | 1.91 | 0.10 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_String_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Tests.Perf_String.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_String*'
```

<details>

### System.Tests.Perf_String.ToLowerInvariant(s: "test")

#### 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 | [357b09da5abffaeb67d64c928e15293ca2a2de5e](https://github.com/dotnet/runtime/commit/357b09da5abffaeb67d64c928e15293ca2a2de5e)
Compare | [a9ca41321284c0d1e423bfc240e9c9f8be970b8b](https://github.com/dotnet/runtime/commit/a9ca41321284c0d1e423bfc240e9c9f8be970b8b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/357b09da5abffaeb67d64c928e15293ca2a2de5e...a9ca41321284c0d1e423bfc240e9c9f8be970b8b)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.Perf_DefaultFrozenDictionary

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[TryGetValue_True_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_True_FrozenDictionary(Count%3a%20100).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 964.24 ns | 1.01 μs | 1.05 | 0.00 | False | | |
|<ul><li>[TryGetValue_True_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_True_FrozenDictionary(Count%3a%2010000).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACo1UbW/TMBD+jsR/MP2SBNIuK+uglYLouhcGLYwu2heEKje5NkZ+ic7O1kyI346dVKzKJJR8cHyX57nz3T3OAqguEQRIo1+++E0eckAgZyXj2RIKReKYeJkyEswRltIwAV4LdoZUpnkNRNjooxxopo8EZbKNnGKaMwOpsQkJk8T3dqcnXkg8isJugid4Atp8pQJc1I/ebaUNiMFMcW7JTEk9uAHcrM5hQ0tuLlE9gjxn9SeK1SDB6grMHeUlrBK0Sxvhz5StZUKOI/sEB8dclnKm5IZtS6R1oh/eTImC8dpaqAy8nyT+QzzDLDz7P9O6vjCZ7RmCpagOCEyDKEzlPyNOlQk6wK6VnvN7UTe2C/6zvpBbJqEL9markqroBs0rzVLKb1AJ5TxdiZ+qNbLsiqs15eyx9nWhLYfLrhkudgWgFayspdRSV60AwEQV+11Lq4kl3hoqCvKBZNSAU74/jIYn/Wjcj0ZJ9G4yej8Zjgfj09Hp8XD8JoomVksuCuwMyIzc2uSgY20wpca/tIbMePW9hBLcedx5ayMICdtsfKPWSvHnVSyUVE4SIen1p9+Snn33OlCuXU0Fgl1ramN3YTtV1ZT5/G7REA5611RFXmlD0egHZvJVqknvgcl+fYv7tmUW13MMXQpBkT0CobhdCbrz69a66kPyOiDrqtXr8N/FD/eJXJgC1S97759hl6Dt7Y/Rzi/zD2ba+Kf3gHRrA721xTwFQzsFQOLGmea2BOJKIL5uhtXgQrJLFS+FjNspq8av4yaHBRpmOMTeuZWI/ZNVe9NRiC914AV/ASPpj9hhBQAA>)</li></ul> | 229.16 μs | 248.92 μs | 1.09 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Perf_DefaultFrozenDictionary_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Perf_DefaultFrozenDictionary_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Perf_DefaultFrozenDictionary.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.Collections.Perf_DefaultFrozenDictionary*'
```

<details>

### System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 100)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 10000)

#### 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 | [357b09da5abffaeb67d64c928e15293ca2a2de5e](https://github.com/dotnet/runtime/commit/357b09da5abffaeb67d64c928e15293ca2a2de5e)
Compare | [a9ca41321284c0d1e423bfc240e9c9f8be970b8b](https://github.com/dotnet/runtime/commit/a9ca41321284c0d1e423bfc240e9c9f8be970b8b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/357b09da5abffaeb67d64c928e15293ca2a2de5e...a9ca41321284c0d1e423bfc240e9c9f8be970b8b)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.ContainsKeyTrue&lt;String, String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.ContainsKeyTrue(String%2c%20String).FrozenDictionary(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Contains/ContainsKeyTrue.cs#L130-#L139>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 5.35 μs | 5.87 μs | 1.10 | 0.03 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.ContainsKeyTrue%28String%2C%20String%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.ContainsKeyTrue%28String%2C%20String%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.Collections.ContainsKeyTrue&lt;String, String&gt;*'
```

<details>

### System.Collections.ContainsKeyTrue&lt;String, String&gt;.FrozenDictionary(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 | [357b09da5abffaeb67d64c928e15293ca2a2de5e](https://github.com/dotnet/runtime/commit/357b09da5abffaeb67d64c928e15293ca2a2de5e)
Compare | [a9ca41321284c0d1e423bfc240e9c9f8be970b8b](https://github.com/dotnet/runtime/commit/a9ca41321284c0d1e423bfc240e9c9f8be970b8b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/357b09da5abffaeb67d64c928e15293ca2a2de5e...a9ca41321284c0d1e423bfc240e9c9f8be970b8b)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.TryGetValueTrue&lt;String, String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[FrozenDictionaryOptimized - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.TryGetValueTrue(String%2c%20String).FrozenDictionaryOptimized(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueTrue.cs#L132-#L141>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 5.29 μs | 5.63 μs | 1.06 | 0.04 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.TryGetValueTrue%28String%2C%20String%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.TryGetValueTrue%28String%2C%20String%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.Collections.TryGetValueTrue&lt;String, String&gt;*'
```

<details>

### System.Collections.TryGetValueTrue&lt;String, String&gt;.FrozenDictionaryOptimized(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 | [357b09da5abffaeb67d64c928e15293ca2a2de5e](https://github.com/dotnet/runtime/commit/357b09da5abffaeb67d64c928e15293ca2a2de5e)
Compare | [a9ca41321284c0d1e423bfc240e9c9f8be970b8b](https://github.com/dotnet/runtime/commit/a9ca41321284c0d1e423bfc240e9c9f8be970b8b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/357b09da5abffaeb67d64c928e15293ca2a2de5e...a9ca41321284c0d1e423bfc240e9c9f8be970b8b)
Configs | CompilationMode:tiered, RunKind:micro


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

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IterateGetPositionTenSegments - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Buffers.Tests.ReadOnlySequenceTests(Char).IterateGetPositionTenSegments.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Buffers/ReadOnlySequenceTests.cs#L135-#L137>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 41.32 ns | 43.52 ns | 1.05 | 0.16 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Buffers.Tests.ReadOnlySequenceTests%28Char%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/11_05_2024/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Buffers.Tests.ReadOnlySequenceTests%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.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;*'
```

<details>

### System.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;.IterateGetPositionTenSegments

#### 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	357b09da5abffaeb67d64c928e15293ca2a2de5e
Compare	a9ca41321284c0d1e423bfc240e9c9f8be970b8b
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
TryGetValue_True_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	964.24 ns	1.01 μs	1.05	0.00	False
TryGetValue_True_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	229.16 μs	248.92 μs	1.09	0.00	False

[Perf] Linux/x64: 6 Regressions on 11/1/2024 7:42:33 PM #109552

Description

Run Information

Regressions in System.Tests.Perf_String

Repro

System.Tests.Perf_String.ToLowerInvariant(s: "test")

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.Perf_DefaultFrozenDictionary

Repro

System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 100)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 10000)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.ContainsKeyTrue<String, String>

Repro

System.Collections.ContainsKeyTrue<String, String>.FrozenDictionary(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.TryGetValueTrue<String, String>

Repro

System.Collections.TryGetValueTrue<String, String>.FrozenDictionaryOptimized(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

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

Repro

System.Buffers.Tests.ReadOnlySequenceTests<Char>.IterateGetPositionTenSegments

ETL Files

Histogram

JIT Disasms

Docs

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