[Perf] Regressions from inliner policy change

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [27d23218a56d484638692d56b3abd27e0b21b591](https://github.com/dotnet/runtime/commit/27d23218a56d484638692d56b3abd27e0b21b591)
Compare | [d9c4c3e73dcf09435a3cc1cabb23584c9f24b504](https://github.com/dotnet/runtime/commit/d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Diff | [Diff](https://github.com/dotnet/runtime/compare/27d23218a56d484638692d56b3abd27e0b21b591...d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
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_arm64_ubuntu 22.04/System.Memory.ReadOnlySpan.IndexOfString(input%3a%20%22foobardzsdzs%22%2c%20value%3a%20%22rddzs%22%2c%20comparisonType%3a%20InvariantCulture).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> | 39.46 ns | 45.49 ns | 1.15 | 0.00 | False | | |
|<ul><li>[IndexOfString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Memory.ReadOnlySpan.IndexOfString(input%3a%20%22AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAXAAAAAAAAAAAAAAAAAAAAAAAAAAAAA%22%2c%20value%3a%20%22x%22%2c%20comparisonType%3a%20InvariantCultureIgno.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> | 250.88 ns | 300.80 ns | 1.20 | 0.11 | False | | |
|<ul><li>[IndexOfString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Memory.ReadOnlySpan.IndexOfString(input%3a%20%22ABCDE%22%2c%20value%3a%20%22c%22%2c%20comparisonType%3a%20InvariantCultureIgnoreCase).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> | 22.82 ns | 28.21 ns | 1.24 | 0.00 | False | | |
|<ul><li>[IndexOfString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Memory.ReadOnlySpan.IndexOfString(input%3a%20%22string1%22%2c%20value%3a%20%22string2%22%2c%20comparisonType%3a%20InvariantCulture).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> | 30.78 ns | 36.42 ns | 1.18 | 0.00 | False | | |
|<ul><li>[IndexOfString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Memory.ReadOnlySpan.IndexOfString(input%3a%20%22AAAAA5AAAA%22%2c%20value%3a%20%225%22%2c%20comparisonType%3a%20InvariantCulture).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> | 27.12 ns | 32.08 ns | 1.18 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Memory.ReadOnlySpan_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Memory.ReadOnlySpan_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Memory.ReadOnlySpan_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Memory.ReadOnlySpan_004.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Memory.ReadOnlySpan_005.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_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: "foobardzsdzs", value: "rddzs", comparisonType: InvariantCulture)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.ReadOnlySpan.IndexOfString(input: "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAXAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", value: "x", comparisonType: InvariantCultureIgnoreCase)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.ReadOnlySpan.IndexOfString(input: "ABCDE", value: "c", comparisonType: InvariantCultureIgnoreCase)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.ReadOnlySpan.IndexOfString(input: "string1", value: "string2", comparisonType: InvariantCulture)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.ReadOnlySpan.IndexOfString(input: "AAAAA5AAAA", value: "5", comparisonType: InvariantCulture)

#### 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 | [27d23218a56d484638692d56b3abd27e0b21b591](https://github.com/dotnet/runtime/commit/27d23218a56d484638692d56b3abd27e0b21b591)
Compare | [d9c4c3e73dcf09435a3cc1cabb23584c9f24b504](https://github.com/dotnet/runtime/commit/d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Diff | [Diff](https://github.com/dotnet/runtime/compare/27d23218a56d484638692d56b3abd27e0b21b591...d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
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>[WriteBasicUtf16 - 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.WriteBasicUtf16(Formatted%3a%20False%2c%20SkipValidation%3a%20True%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#L94-#L126>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.82 ms | 2.02 ms | 1.11 | 0.01 | False | | |
|<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%20True%2c%20DataSize%3a%2010).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> | 569.82 ns | 632.04 ns | 1.11 | 0.00 | False | | |
|<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%20True%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> | 1.78 ms | 2.04 ms | 1.15 | 0.00 | False | | |
|<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%2010).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> | 606.24 ns | 661.19 ns | 1.09 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Tests.Perf_Basic_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Tests.Perf_Basic_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Tests.Perf_Basic_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Tests.Perf_Basic_004.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_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.WriteBasicUtf16(Formatted: False, SkipValidation: True, DataSize: 100000)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: True, DataSize: 10)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: True, DataSize: 100000)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: False, DataSize: 10)

#### 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 | [27d23218a56d484638692d56b3abd27e0b21b591](https://github.com/dotnet/runtime/commit/27d23218a56d484638692d56b3abd27e0b21b591)
Compare | [d9c4c3e73dcf09435a3cc1cabb23584c9f24b504](https://github.com/dotnet/runtime/commit/d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Diff | [Diff](https://github.com/dotnet/runtime/compare/27d23218a56d484638692d56b3abd27e0b21b591...d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Tests.Perf_Guid

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ctor_str - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Tests.Perf_Guid.ctor_str.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.Guid.cs#L32-#L34>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl1RwWobMRS8G/wPr77IphvvsnZC6yJom4YUSqDEpj0GdfXWq6KVjPTU2CT99z5515denpA0M5oZWSQgjAQSPortKRL2yx3v4/I7hvbpPhm9bMiHp0hBfJhOLONVSxiYoBUhmR7ndVVfX1X1Vb3eVe829WqzWi9v1tXq+ub926raVNViZAY8eCYK7ckhlSG5zL/o/grKNV2+D9jGskOlY9kr4y6AxrvW7PPLJ6d608xfxK3vD8YqMt49eI1iA4IMBtSiAPGY3DfjdD5kdPDibzZyj/TVRM5kGmW/KFI/DXVZRwUTvYvz3IfMoxiiyvMszu5lHsVoVQ5LMRqTw7KYTl7hEPxvbAi2GAzGAj4nY/WOw25J9YcCfiibUOambz23gOERY7L06Q8GtcfppCxf4bnjIKMCvGFx4i4izGbk746NTRpnMyhLuDuypEXwLbTGspZxe/CJPwrimZwNBXSafy333XQqEDxzapgPAHmxeWy8Tb2T/9s9DedRnn0zjgxZlILrQ276NG4fUMUUsEdHYvEPuhLmRlsCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 33.19 ns | 35.91 ns | 1.08 | 0.01 | False | | |
|<ul><li>[ParseExactD - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Tests.Perf_Guid.ParseExactD.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.Guid.cs#L55-#L56>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl1RwWobMRC9G/wPU19k041XbFxSXARtk5BCCYTYtMeiSrNeFa20SKPGpum/V/KuL73MMKN5T2/eWCQgjAQCPrLdKRL2632u4/oJQ/vjIRm9fpIh4v1RKrpjH+YzmyGyJQwZoyUhmR6XDW/eXfHmqtns+fttc73dbNY3m+vmhvO3nG85X03IgIPPQKY9OaQ6JFfwF96fQTrVlfeAbaw7lDrWvTTuMqC8a82h/Hxysjdq+Yfd+n4wVpLx7tFrZFtgZDCgZhWw5+S+GqdLM08Hz/4WIQ9IX0wkH4yS9k6S/G6oKzwymOhdXBZLRAnVuKo4x+qsXpRQTVLFmKpJmBjTaj57hSH4X6gIdhgMxgo+J2P1Pi+7I9kPFXyTNqEoZt/67AKGZ4zJ0qffGOQB57O6foWXLi8yMcCbTE7ZiwiLBfn7o7JJ42IBdQ35Ov1gEXwLrbGZy7gD+JQPBfEMLoICOp2vVvxWnQwEL3lrWI4D4iLzqLxNvRP/yz2N/SjOuvMcGbIoWLYPs9OnqXxEGVPAHh2x1T+g1mDAXgIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 33.05 ns | 36.90 ns | 1.12 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Tests.Perf_Guid_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Tests.Perf_Guid_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Tests.Perf_Guid.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_Guid*'
```

<details>

### System.Tests.Perf_Guid.ctor_str

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Tests.Perf_Guid.ParseExactD

#### 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 | [27d23218a56d484638692d56b3abd27e0b21b591](https://github.com/dotnet/runtime/commit/27d23218a56d484638692d56b3abd27e0b21b591)
Compare | [d9c4c3e73dcf09435a3cc1cabb23584c9f24b504](https://github.com/dotnet/runtime/commit/d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Diff | [Diff](https://github.com/dotnet/runtime/compare/27d23218a56d484638692d56b3abd27e0b21b591...d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Count - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern%3a%20%22(%3fi)Holmes%22%2c%20Options%3a%20None).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.RegularExpressions/Perf.Regex.Industry.cs#L193-#L195>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 231.75 μs | 244.13 μs | 1.05 | 0.00 | False | | |
|<ul><li>[Count - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern%3a%20%22(%3fi)Sherlock%20Holmes%22%2c%20Options%3a%20NonBacktracking).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.RegularExpressions/Perf.Regex.Industry.cs#L193-#L195>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 158.99 μs | 166.98 μs | 1.05 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.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.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock*'
```

<details>

### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Holmes", Options: None)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock Holmes", Options: NonBacktracking)

#### 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 | [27d23218a56d484638692d56b3abd27e0b21b591](https://github.com/dotnet/runtime/commit/27d23218a56d484638692d56b3abd27e0b21b591)
Compare | [d9c4c3e73dcf09435a3cc1cabb23584c9f24b504](https://github.com/dotnet/runtime/commit/d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Diff | [Diff](https://github.com/dotnet/runtime/compare/27d23218a56d484638692d56b3abd27e0b21b591...d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Buffers.Tests.RentReturnArrayPoolTests&lt;Byte&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[MultipleSerial - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Buffers.Tests.RentReturnArrayPoolTests(Byte).MultipleSerial(RentalSize%3a%204096%2c%20ManipulateArray%3a%20False%2c%20Async%3a%20False%2c%20UseSharedPool%3a%20False).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Buffers/ArrayPoolTests.cs#L83-#L104>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 337.73 ns | 407.52 ns | 1.21 | 0.03 | False | | |
|<ul><li>[SingleParallel - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Buffers.Tests.RentReturnArrayPoolTests(Byte).SingleParallel(RentalSize%3a%204096%2c%20ManipulateArray%3a%20True%2c%20Async%3a%20False%2c%20UseSharedPool%3a%20False).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Buffers/ArrayPoolTests.cs#L62-#L81>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 54.42 μs | 61.41 μs | 1.13 | 0.43 | False | | |
|<ul><li>[SingleParallel - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Buffers.Tests.RentReturnArrayPoolTests(Byte).SingleParallel(RentalSize%3a%204096%2c%20ManipulateArray%3a%20False%2c%20Async%3a%20False%2c%20UseSharedPool%3a%20False).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Buffers/ArrayPoolTests.cs#L62-#L81>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 8.46 μs | 9.47 μs | 1.12 | 0.06 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests%28Byte%29_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests%28Byte%29_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests%28Byte%29_003.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests%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.RentReturnArrayPoolTests&lt;Byte&gt;*'
```

<details>

### System.Buffers.Tests.RentReturnArrayPoolTests&lt;Byte&gt;.MultipleSerial(RentalSize: 4096, ManipulateArray: False, Async: False, UseSharedPool: False)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Buffers.Tests.RentReturnArrayPoolTests&lt;Byte&gt;.SingleParallel(RentalSize: 4096, ManipulateArray: True, Async: False, UseSharedPool: False)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Buffers.Tests.RentReturnArrayPoolTests&lt;Byte&gt;.SingleParallel(RentalSize: 4096, ManipulateArray: False, Async: False, UseSharedPool: False)

#### 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 | [27d23218a56d484638692d56b3abd27e0b21b591](https://github.com/dotnet/runtime/commit/27d23218a56d484638692d56b3abd27e0b21b591)
Compare | [d9c4c3e73dcf09435a3cc1cabb23584c9f24b504](https://github.com/dotnet/runtime/commit/d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Diff | [Diff](https://github.com/dotnet/runtime/compare/27d23218a56d484638692d56b3abd27e0b21b591...d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.Json.Document.Tests.Perf_ParseThenWrite

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ParseThenWrite - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented%3a%20True%2c%20TestCase%3a%20DeepTree).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Document/ParseThenWrite.cs#L60-#L69>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 19.70 μs | 22.00 μs | 1.12 | 0.04 | False | | |
|<ul><li>[ParseThenWrite - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented%3a%20False%2c%20TestCase%3a%20Json4KB).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Document/ParseThenWrite.cs#L60-#L69>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl1Sy27bMBC8G/A/bH2hjCqSoDpGo4JAm0fbNAgQxEZzLFhpZbGgSINcJjaa/ntJST60lyW42pmdGUohAaEj4PCRbY6OsM+2eKDsmzM6uza171FTaDly2QPa9seDsA63HeonKwmzf6/JrbsWJG51E1DYVPBZKIcpRPyVcFhB5F3dXS7Zh/lMheWiJbRheyMISfaYlEV5flaUZ+VqW7yvyvPq3Tq7WK/WF+X6bVFURbGckBb3JgBZY0gj5dbriD/x/rRC1138brF1eYeicXkvpD4N1Ea3chc3H7XoZZ38Zlem30slSBp9bxpkFTCSaLFhKbBHr++kbmIzTFvD/kQhX5C+SkfGylqoaP1JUhd5hJXBqUtiuDyWdLTKh5oO6nks6SSVj0c6CePjsZzPXmFvzS+sCTZoJboULr1UzTaY3ZDo9yl8F8ojHzI2IQW0j+i8ok/PaMUO57M8f4WXLhiZGOBNIKeQhYPFgszNoVa+wcUC8hxuDoFSIZgWWqkCl9Q7MD48FLgBHAVZDA9sIeZdd8ISvATXkIwD/CTzUBvle83/l3sc+44PusMcSVLIWYgPQ9LH6XqPwnmL8f9jy78htlhFqAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 13.30 μs | 16.23 μs | 1.22 | 0.01 | False | | |
|<ul><li>[ParseThenWrite - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented%3a%20False%2c%20TestCase%3a%20Json400KB).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Document/ParseThenWrite.cs#L60-#L69>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl1SXY/TMBB8r9T/sPTFqcglIbQ6CLIE9wEcp5NO14p7RCbZNEaOXdnru1Yc/x07SR/gZS1vdmZnxlFIQOgIOHxkm6Mj7LMtHij75ozOrkzte9QUWo5cdo+2/XEvrMNth/rRSsLs32ty464EiRvdBBQ2FXwWymEKEX8pHFYQeVdFcXuxZB/mMxXWi5bQhv2NICTZY1IW5fqsKM/K1bZ4V5XranWeFW/Xb87L96+LoiqK5YS0uDcByBpDGim3Xkf8ifenFbru4neLrcs7FI3LeyH1aaA2upW7uPmoRS/r5De7NP1eKkHS6DvTIKuAkUSLDUuBPXh9K3UTm2HaGvYnCvmC9FU6MlbWQkXzj5K6yCOsDF5dEuPlsaSjVT7UdFDPY0knqXw80kkYH4/lfPYCe2t+YU2wQSvRpXDhpWq2weyGRL9P4btQHvmQsgkpoH1A5xV9ekIrdjif5fkLPHfByMQArwI5hSwcLBZkrg+18g0uFpDncH0IlArBtNBKFbik3oHx4aHADeAoyGJ4Ygsx77oTluA5uIZkHOAnmYfaKN9r/r/c49h3fNAd5kiSQs5CfBiSPk7XOxTOW4x/IFv+Bb5enOyqAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 1.39 ms | 1.65 ms | 1.19 | 0.28 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Document.Tests.Perf_ParseThenWrite_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Document.Tests.Perf_ParseThenWrite_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Document.Tests.Perf_ParseThenWrite_003.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Document.Tests.Perf_ParseThenWrite.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.Document.Tests.Perf_ParseThenWrite*'
```

<details>

### System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented: True, TestCase: DeepTree)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented: False, TestCase: Json4KB)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented: False, TestCase: Json400KB)

#### 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 | [27d23218a56d484638692d56b3abd27e0b21b591](https://github.com/dotnet/runtime/commit/27d23218a56d484638692d56b3abd27e0b21b591)
Compare | [d9c4c3e73dcf09435a3cc1cabb23584c9f24b504](https://github.com/dotnet/runtime/commit/d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Diff | [Diff](https://github.com/dotnet/runtime/compare/27d23218a56d484638692d56b3abd27e0b21b591...d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Globalization.Tests.StringSearch

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options%3a%20(en-US%2c%20IgnoreCase%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L102-#L104>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 821.17 ns | 898.62 ns | 1.09 | 0.01 | False | | |
|<ul><li>[IndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options%3a%20(%2c%20None%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L102-#L104>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 541.36 ns | 614.16 ns | 1.13 | 0.11 | False | | |
|<ul><li>[IndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options%3a%20(en-US%2c%20IgnoreNonSpace%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L102-#L104>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 539.89 ns | 613.38 ns | 1.14 | 0.11 | False | | |
|<ul><li>[IndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options%3a%20(%2c%20IgnoreCase%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L102-#L104>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 821.32 ns | 901.57 ns | 1.10 | 0.01 | False | | |
|<ul><li>[IndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options%3a%20(en-US%2c%20None%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L102-#L104>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 540.29 ns | 613.34 ns | 1.14 | 0.10 | False | | |
|<ul><li>[LastIndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options%3a%20(en-US%2c%20IgnoreCase%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L106-#L108>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 852.78 ns | 926.97 ns | 1.09 | 0.09 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringSearch_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringSearch_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringSearch_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringSearch_004.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringSearch_005.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringSearch_006.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringSearch.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.Globalization.Tests.StringSearch*'
```

<details>

### System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (en-US, IgnoreCase, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (, None, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (en-US, IgnoreNonSpace, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (, IgnoreCase, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (en-US, None, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options: (en-US, IgnoreCase, False))

#### 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 | [27d23218a56d484638692d56b3abd27e0b21b591](https://github.com/dotnet/runtime/commit/27d23218a56d484638692d56b3abd27e0b21b591)
Compare | [d9c4c3e73dcf09435a3cc1cabb23584c9f24b504](https://github.com/dotnet/runtime/commit/d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Diff | [Diff](https://github.com/dotnet/runtime/compare/27d23218a56d484638692d56b3abd27e0b21b591...d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Buffers.Tests.RentReturnArrayPoolTests&lt;Object&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[MultipleSerial - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Buffers.Tests.RentReturnArrayPoolTests(Object).MultipleSerial(RentalSize%3a%204096%2c%20ManipulateArray%3a%20False%2c%20Async%3a%20False%2c%20UseSharedPool%3a%20False).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Buffers/ArrayPoolTests.cs#L83-#L104>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl2S32/TMBDH3yv1fzj6klZkTZaOaQsE0f1gSKgCtQWeveTSGjl2ZJ9ZA9v/zjlNeeDFls93X3/uvlZIQOgICvgQbTpH2MxvfF2jdfMtx918jZrWSN7qpbWi+2qM6i/efXn8iSW9n6+8Itkq3KCVQk1DvlAb+RtzuEivL2NYCS1brwRhr5DDR6EcxrB0nS7/nb453OyFxSq8MERn0dvxSDGiqAktM1YsQrLBaZZmb87S7Cy72KZXeXaVLxbz7PwyXVyfv07TPE1nQ6XF1nBhVBnSSIn1OtSfdB+t0OU+3FusXbJHUbmkEVKfEkqja7kLL3daNLKc/oluTdNK7kYavTIVRjlEJJHBoxiitdefpa5CkLOtiV4CyAPSJ+nIWFkKdSdI/JC0DzrCSme0mwYLirDEx1aLfo17+iIs8YBaHLd4ACuO22w8eobWmmAIBB/QxXDjpaq23OyGRNPG8F0oj0Xw7tbwFNCu0bF1y19oxQ7HoyR5hqc9NzIowCsWJ56Fg8mEzP2hVL7CyQSSBO4PLKkQTA21VKwl9Q6MZ6PA9cUByKKu2LUw75KdJXjirmF6TChOmIfSKN/o4n/c7hh3Rc/NeSRJYRHx+JAn3Q3HFQrnLTb866LZX92U+N/OAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 339.43 ns | 398.33 ns | 1.17 | 0.02 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests%28Object%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Buffers.Tests.RentReturnArrayPoolTests%28Object%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.RentReturnArrayPoolTests&lt;Object&gt;*'
```

<details>

### System.Buffers.Tests.RentReturnArrayPoolTests&lt;Object&gt;.MultipleSerial(RentalSize: 4096, ManipulateArray: False, Async: False, UseSharedPool: False)

#### 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 | [27d23218a56d484638692d56b3abd27e0b21b591](https://github.com/dotnet/runtime/commit/27d23218a56d484638692d56b3abd27e0b21b591)
Compare | [d9c4c3e73dcf09435a3cc1cabb23584c9f24b504](https://github.com/dotnet/runtime/commit/d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Diff | [Diff](https://github.com/dotnet/runtime/compare/27d23218a56d484638692d56b3abd27e0b21b591...d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
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_arm64_ubuntu 22.04/System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling%3a%20Skip%2c%20SegmentSize%3a%200%2c%20TestCase%3a%20LongMultiLine).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> | 4.41 μs | 4.78 μs | 1.08 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Text.Json.Tests.Utf8JsonReaderCommentsTests_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_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: Skip, SegmentSize: 0, TestCase: LongMultiLine)

#### 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 | [27d23218a56d484638692d56b3abd27e0b21b591](https://github.com/dotnet/runtime/commit/27d23218a56d484638692d56b3abd27e0b21b591)
Compare | [d9c4c3e73dcf09435a3cc1cabb23584c9f24b504](https://github.com/dotnet/runtime/commit/d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Diff | [Diff](https://github.com/dotnet/runtime/compare/27d23218a56d484638692d56b3abd27e0b21b591...d9c4c3e73dcf09435a3cc1cabb23584c9f24b504)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Globalization.Tests.StringEquality

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Compare_Same - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04/System.Globalization.Tests.StringEquality.Compare_Same(Count%3a%201024%2c%20Options%3a%20(en-US%2c%20OrdinalIgnoreCase)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringEquality.cs#L61-#L63>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.38 μs | 1.72 μs | 1.25 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringEquality_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_24_2025/refs/heads/main_arm64_ubuntu%2022.04_Regression/System.Globalization.Tests.StringEquality.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.Globalization.Tests.StringEquality*'
```

<details>

### System.Globalization.Tests.StringEquality.Compare_Same(Count: 1024, Options: (en-US, OrdinalIgnoreCase))

#### 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	27d23218a56d484638692d56b3abd27e0b21b591
Compare	d9c4c3e73dcf09435a3cc1cabb23584c9f24b504
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
IndexOfString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	39.46 ns	45.49 ns	1.15	0.00	False
IndexOfString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	250.88 ns	300.80 ns	1.20	0.11	False
IndexOfString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	22.82 ns	28.21 ns	1.24	0.00	False
IndexOfString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	30.78 ns	36.42 ns	1.18	0.00	False
IndexOfString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	27.12 ns	32.08 ns	1.18	0.00	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
WriteBasicUtf16 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.82 ms	2.02 ms	1.11	0.01	False
WriteBasicUtf8 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	569.82 ns	632.04 ns	1.11	0.00	False
WriteBasicUtf8 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.78 ms	2.04 ms	1.15	0.00	False
WriteBasicUtf8 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	606.24 ns	661.19 ns	1.09	0.00	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
ctor_str - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	33.19 ns	35.91 ns	1.08	0.01	False
ParseExactD - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	33.05 ns	36.90 ns	1.12	0.01	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Count - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	231.75 μs	244.13 μs	1.05	0.00	False
Count - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	158.99 μs	166.98 μs	1.05	0.00	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
MultipleSerial - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	337.73 ns	407.52 ns	1.21	0.03	False
SingleParallel - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	54.42 μs	61.41 μs	1.13	0.43	False
SingleParallel - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	8.46 μs	9.47 μs	1.12	0.06	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
ParseThenWrite - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	19.70 μs	22.00 μs	1.12	0.04	False
ParseThenWrite - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	13.30 μs	16.23 μs	1.22	0.01	False
ParseThenWrite - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.39 ms	1.65 ms	1.19	0.28	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
IndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	821.17 ns	898.62 ns	1.09	0.01	False
IndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	541.36 ns	614.16 ns	1.13	0.11	False
IndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	539.89 ns	613.38 ns	1.14	0.11	False
IndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	821.32 ns	901.57 ns	1.10	0.01	False
IndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	540.29 ns	613.34 ns	1.14	0.10	False
LastIndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	852.78 ns	926.97 ns	1.09	0.09	False

[Perf] Regressions from inliner policy change #114996

Description

Run Information

Regressions in System.Memory.ReadOnlySpan

Repro

System.Memory.ReadOnlySpan.IndexOfString(input: "foobardzsdzs", value: "rddzs", comparisonType: InvariantCulture)

ETL Files

Histogram

JIT Disasms

System.Memory.ReadOnlySpan.IndexOfString(input: "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAXAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", value: "x", comparisonType: InvariantCultureIgnoreCase)

ETL Files

Histogram

JIT Disasms

System.Memory.ReadOnlySpan.IndexOfString(input: "ABCDE", value: "c", comparisonType: InvariantCultureIgnoreCase)

ETL Files

Histogram

JIT Disasms

System.Memory.ReadOnlySpan.IndexOfString(input: "string1", value: "string2", comparisonType: InvariantCulture)

ETL Files

Histogram

JIT Disasms

System.Memory.ReadOnlySpan.IndexOfString(input: "AAAAA5AAAA", value: "5", comparisonType: InvariantCulture)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Text.Json.Tests.Perf_Basic

Repro

System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: False, SkipValidation: True, DataSize: 100000)

ETL Files

Histogram

JIT Disasms

System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: True, DataSize: 10)

ETL Files

Histogram

JIT Disasms

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

ETL Files

Histogram

JIT Disasms

System.Text.Json.Tests.Perf_Basic.WriteBasicUtf8(Formatted: False, SkipValidation: False, DataSize: 10)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Tests.Perf_Guid

Repro

System.Tests.Perf_Guid.ctor_str

ETL Files

Histogram

JIT Disasms

System.Tests.Perf_Guid.ParseExactD

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock

Repro

System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Holmes", Options: None)

ETL Files

Histogram

JIT Disasms

System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock Holmes", Options: NonBacktracking)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

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

Repro

System.Buffers.Tests.RentReturnArrayPoolTests<Byte>.MultipleSerial(RentalSize: 4096, ManipulateArray: False, Async: False, UseSharedPool: False)

ETL Files

Histogram

JIT Disasms

System.Buffers.Tests.RentReturnArrayPoolTests<Byte>.SingleParallel(RentalSize: 4096, ManipulateArray: True, Async: False, UseSharedPool: False)

ETL Files

Histogram