[Perf] Windows/x64: 15 Regressions on 5/2/2025 11:56:41 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22621
Queue | TigerWindows
Baseline | [cb3f507bacf3d941c44458613dc4129ef5508265](https://github.com/dotnet/runtime/commit/cb3f507bacf3d941c44458613dc4129ef5508265)
Compare | [4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8](https://github.com/dotnet/runtime/commit/4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Diff | [Diff](https://github.com/dotnet/runtime/compare/cb3f507bacf3d941c44458613dc4129ef5508265...4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in PerfLabTests.CastingPerf

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IntObj - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/PerfLabTests.CastingPerf.IntObj.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/CastingPerf.cs#L254-#L259>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl1RwW4TMRC9R8o/DLk4EdusG0JUBVkCQkURVKA2grOzO5t15bUje0wTUf6dcXZz4TKWx+89v3ljkYAwEih4L35gaL7p3Zbvcb7RkYzb5978i6PvuyfxbjyyjNcNYWBCrQnJdDhdyMXbK/nmSq628mZ9vVgvV/PlzWqxlNevpVxLORuYAQ+eiaL25JDKkFzmX3R3Qbuqze8Bm1i2qOtYdtq4C6DyrjH7/PPJ6c5U0z9i47uDsZqMd/e+RrEGQQYD1qIA8ZDcV+Pq3GR08OJvNvIZ6c5E8sFU2n7SpH8ZarOODiZ6F6c5D5VL0Y+qzrU4u1e5FINV1R/FYEz1x2w8eoFD8E9YETxiMBgL+JiMrbc87CPp7lDAT20Tqpz0xnMKGB4wJksffmPQexyPyvIFnlseZFCAVyxOnEWEyYT87bGyqcbJBMoSbo8saRF8A42xrMVrA594URDP5GwooKt5aznvqtWB4JmnhmkPUBebx8rb1Dn1v91T34/q7JtxZMiiEhwfctKn4XqPOqaAHToSs39q9tVaWwIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 266.95 μs | 340.52 μs | 1.28 | 0.06 | False | | |
|<ul><li>[IFooObjIsIFooInterAlia - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/PerfLabTests.CastingPerf.IFooObjIsIFooInterAlia.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/CastingPerf.cs#L227-#L232>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 268.25 μs | 341.05 μs | 1.27 | 0.05 | False | | |
|<ul><li>[ObjObjIsFoo - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/PerfLabTests.CastingPerf.ObjObjIsFoo.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/CastingPerf.cs#L163-#L168>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 270.88 μs | 341.77 μs | 1.26 | 0.06 | False | | |
|<ul><li>[FooObjIsFoo - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/PerfLabTests.CastingPerf.FooObjIsFoo.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/CastingPerf.cs#L173-#L178>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 266.82 μs | 340.93 μs | 1.28 | 0.04 | False | | |
|<ul><li>[IFooObjIsIFoo - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/PerfLabTests.CastingPerf.IFooObjIsIFoo.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/CastingPerf.cs#L217-#L222>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 270.24 μs | 340.93 μs | 1.26 | 0.04 | False | | |
|<ul><li>[IFooObjIsDescendantOfIFoo - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/PerfLabTests.CastingPerf.IFooObjIsDescendantOfIFoo.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/CastingPerf.cs#L237-#L242>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 268.75 μs | 341.08 μs | 1.27 | 0.05 | False | | |
|<ul><li>[FooObjIsDescendant - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/PerfLabTests.CastingPerf.FooObjIsDescendant.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/CastingPerf.cs#L200-#L205>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 272.03 μs | 340.91 μs | 1.25 | 0.07 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/PerfLabTests.CastingPerf_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/PerfLabTests.CastingPerf_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/PerfLabTests.CastingPerf_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/PerfLabTests.CastingPerf_004.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/PerfLabTests.CastingPerf_005.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/PerfLabTests.CastingPerf_006.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/PerfLabTests.CastingPerf_007.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/PerfLabTests.CastingPerf.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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'PerfLabTests.CastingPerf*'
```

<details>

### PerfLabTests.CastingPerf.IntObj

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.CastingPerf.IFooObjIsIFooInterAlia

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.CastingPerf.ObjObjIsFoo

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.CastingPerf.FooObjIsFoo

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.CastingPerf.IFooObjIsIFoo

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.CastingPerf.IFooObjIsDescendantOfIFoo

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.CastingPerf.FooObjIsDescendant

#### 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 | Windows 10.0.22621
Queue | TigerWindows
Baseline | [cb3f507bacf3d941c44458613dc4129ef5508265](https://github.com/dotnet/runtime/commit/cb3f507bacf3d941c44458613dc4129ef5508265)
Compare | [4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8](https://github.com/dotnet/runtime/commit/4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Diff | [Diff](https://github.com/dotnet/runtime/compare/cb3f507bacf3d941c44458613dc4129ef5508265...4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.Perf_Utf8Encoding

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[GetByteCount - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Text.Perf_Utf8Encoding.GetByteCount(Input%3a%20Chinese).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Utf8Encoding.cs#L26-#L28>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 11.47 μs | 15.18 μs | 1.32 | 0.34 | False | | |
|<ul><li>[GetByteCount - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Text.Perf_Utf8Encoding.GetByteCount(Input%3a%20Cyrillic).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Utf8Encoding.cs#L26-#L28>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl1RTY/TMBC9V+p/GHpxKrJNtgW2BFmCLRWs0EpoW+CITDJpjBw7sidsI3b/O5OPXrjMyOOZN++9MUhAGAgkvBeHLhDWqyOeafUVffnzG5Xbvc1doe1p9QnptiPcudZSdGebljLYdV4bo/OleDefGcZSJaFnsEIRkq4xWqfr11fp5ip9c0y32fWr7Dpdvb3Z3Kw325dpmqXpcpr02DgeFIUji5R43sLzF9xfXtm86v89liGpUBUhqZW2l4bc2VKf+s2dVbXOo79i5+pGG0Xa2XtXoMhAkEaPhYhBPLT2i7ZFX+Ru78RzT4Q1ftaBnNe5Mh8VqR+aqh5HeR2cDVHvlexDPEqVQ4wH9rIP8URVjimeiMkxLeezJ2i8+405wQG9xhDDbatNcWSxB1J1E8N3ZVqUR14yeI3+AUNr6MMf9OqE81mSPMFjxUImBHjB4MReBFgsyO3PuWkLXCwgSWB/ZkiD4EootWEsviS4lg8FYRjuCXm0BV+t9zuvlCd4ZNUQjQ3yQvOcO9PWVv5PtxvrQQ68uY80GZSC7UN2upue96hC67FGS2L5D/32E+F3AgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 10.09 μs | 12.95 μs | 1.28 | 0.38 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Text.Perf_Utf8Encoding_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Text.Perf_Utf8Encoding_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Text.Perf_Utf8Encoding.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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Perf_Utf8Encoding*'
```

<details>

### System.Text.Perf_Utf8Encoding.GetByteCount(Input: Chinese)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Utf8Encoding.GetByteCount(Input: Cyrillic)

#### 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 | Windows 10.0.22621
Queue | TigerWindows
Baseline | [cb3f507bacf3d941c44458613dc4129ef5508265](https://github.com/dotnet/runtime/commit/cb3f507bacf3d941c44458613dc4129ef5508265)
Compare | [4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8](https://github.com/dotnet/runtime/commit/4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Diff | [Diff](https://github.com/dotnet/runtime/compare/cb3f507bacf3d941c44458613dc4129ef5508265...4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
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_Windows 10.0.22621/System.Text.Perf_Ascii.EqualsIgnoreCase_DifferentCase_Chars(Size%3a%20128).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> | 28.31 ns | 31.78 ns | 1.12 | 0.04 | False | | |
|<ul><li>[EqualsIgnoreCase_ExactlyTheSame_Bytes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Text.Perf_Ascii.EqualsIgnoreCase_ExactlyTheSame_Bytes(Size%3a%20128).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Ascii.cs#L55-#L56>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 6.83 ns | 8.57 ns | 1.26 | 0.20 | False | | |
|<ul><li>[EqualsIgnoreCase_ExactlyTheSame_Bytes_Chars - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Text.Perf_Ascii.EqualsIgnoreCase_ExactlyTheSame_Bytes_Chars(Size%3a%20128).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Ascii.cs#L62-#L64>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 16.58 ns | 19.51 ns | 1.18 | 0.03 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Text.Perf_Ascii_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Text.Perf_Ascii_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Text.Perf_Ascii_003.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Perf_Ascii*'
```

<details>

### System.Text.Perf_Ascii.EqualsIgnoreCase_DifferentCase_Chars(Size: 128)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Ascii.EqualsIgnoreCase_ExactlyTheSame_Bytes(Size: 128)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Ascii.EqualsIgnoreCase_ExactlyTheSame_Bytes_Chars(Size: 128)

#### 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 | Windows 10.0.22621
Queue | TigerWindows
Baseline | [cb3f507bacf3d941c44458613dc4129ef5508265](https://github.com/dotnet/runtime/commit/cb3f507bacf3d941c44458613dc4129ef5508265)
Compare | [4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8](https://github.com/dotnet/runtime/commit/4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Diff | [Diff](https://github.com/dotnet/runtime/compare/cb3f507bacf3d941c44458613dc4129ef5508265...4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.Json.Tests.Perf_Reader

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ReadReturnBytes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Text.Json.Tests.Perf_Reader.ReadReturnBytes(IsDataCompact%3a%20True%2c%20TestCase%3a%20LotsOfStrings).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Utf8JsonReader/Perf.Reader.cs#L95-#L147>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 984.00 ns | 1.04 μs | 1.06 | 0.13 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Text.Json.Tests.Perf_Reader_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Text.Json.Tests.Perf_Reader.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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Tests.Perf_Reader*'
```

<details>

### System.Text.Json.Tests.Perf_Reader.ReadReturnBytes(IsDataCompact: True, TestCase: LotsOfStrings)

#### 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 | Windows 10.0.22621
Queue | TigerWindows
Baseline | [cb3f507bacf3d941c44458613dc4129ef5508265](https://github.com/dotnet/runtime/commit/cb3f507bacf3d941c44458613dc4129ef5508265)
Compare | [4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8](https://github.com/dotnet/runtime/commit/4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Diff | [Diff](https://github.com/dotnet/runtime/compare/cb3f507bacf3d941c44458613dc4129ef5508265...4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in PerfLabTests.LowLevelPerf

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[InterfaceInterfaceMethod - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/PerfLabTests.LowLevelPerf.InterfaceInterfaceMethod.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/perflab/LowLevelPerf.cs#L96-#L114>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 3.28 ms | 3.59 ms | 1.10 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/PerfLabTests.LowLevelPerf_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/PerfLabTests.LowLevelPerf.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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'PerfLabTests.LowLevelPerf*'
```

<details>

### PerfLabTests.LowLevelPerf.InterfaceInterfaceMethod

#### 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 | Windows 10.0.22621
Queue | TigerWindows
Baseline | [cb3f507bacf3d941c44458613dc4129ef5508265](https://github.com/dotnet/runtime/commit/cb3f507bacf3d941c44458613dc4129ef5508265)
Compare | [4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8](https://github.com/dotnet/runtime/commit/4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Diff | [Diff](https://github.com/dotnet/runtime/compare/cb3f507bacf3d941c44458613dc4129ef5508265...4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.ContainsKeyTrue&lt;Int32, Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ConcurrentDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.ContainsKeyTrue(Int32%2c%20Int32).ConcurrentDictionary(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Contains/ContainsKeyTrue.cs#L97-#L106>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.38 μs | 2.66 μs | 1.12 | 0.17 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.ContainsKeyTrue%28Int32%2C%20Int32%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/05_06_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.ContainsKeyTrue%28Int32%2C%20Int32%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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.ContainsKeyTrue&lt;Int32, Int32&gt;*'
```

<details>

### System.Collections.ContainsKeyTrue&lt;Int32, Int32&gt;.ConcurrentDictionary(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>

Name	Value
Architecture	x64
OS	Windows 10.0.22621
Queue	TigerWindows
Baseline	cb3f507bacf3d941c44458613dc4129ef5508265
Compare	4352c7a1d4a71d63cf80cfd8f7c19036bcf131a8
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
IntObj - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	266.95 μs	340.52 μs	1.28	0.06	False
IFooObjIsIFooInterAlia - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	268.25 μs	341.05 μs	1.27	0.05	False
ObjObjIsFoo - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	270.88 μs	341.77 μs	1.26	0.06	False
FooObjIsFoo - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	266.82 μs	340.93 μs	1.28	0.04	False
IFooObjIsIFoo - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	270.24 μs	340.93 μs	1.26	0.04	False
IFooObjIsDescendantOfIFoo - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	268.75 μs	341.08 μs	1.27	0.05	False
FooObjIsDescendant - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	272.03 μs	340.91 μs	1.25	0.07	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
GetByteCount - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	11.47 μs	15.18 μs	1.32	0.34	False
GetByteCount - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	10.09 μs	12.95 μs	1.28	0.38	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
EqualsIgnoreCase_DifferentCase_Chars - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	28.31 ns	31.78 ns	1.12	0.04	False
EqualsIgnoreCase_ExactlyTheSame_Bytes - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	6.83 ns	8.57 ns	1.26	0.20	False
EqualsIgnoreCase_ExactlyTheSame_Bytes_Chars - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	16.58 ns	19.51 ns	1.18	0.03	False

[Perf] Windows/x64: 15 Regressions on 5/2/2025 11:56:41 PM +00:00 #115340

Description

Run Information

Regressions in PerfLabTests.CastingPerf

Repro

PerfLabTests.CastingPerf.IntObj

ETL Files

Histogram

JIT Disasms

PerfLabTests.CastingPerf.IFooObjIsIFooInterAlia

ETL Files

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PerfLabTests.CastingPerf.ObjObjIsFoo

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PerfLabTests.CastingPerf.FooObjIsFoo

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PerfLabTests.CastingPerf.IFooObjIsIFoo

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PerfLabTests.CastingPerf.IFooObjIsDescendantOfIFoo

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PerfLabTests.CastingPerf.FooObjIsDescendant

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Regressions in System.Text.Perf_Utf8Encoding

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System.Text.Perf_Utf8Encoding.GetByteCount(Input: Chinese)

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System.Text.Perf_Utf8Encoding.GetByteCount(Input: Cyrillic)

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Regressions in System.Text.Perf_Ascii

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System.Text.Perf_Ascii.EqualsIgnoreCase_DifferentCase_Chars(Size: 128)

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System.Text.Perf_Ascii.EqualsIgnoreCase_ExactlyTheSame_Bytes(Size: 128)

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System.Text.Perf_Ascii.EqualsIgnoreCase_ExactlyTheSame_Bytes_Chars(Size: 128)

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Regressions in System.Text.Json.Tests.Perf_Reader

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System.Text.Json.Tests.Perf_Reader.ReadReturnBytes(IsDataCompact: True, TestCase: LotsOfStrings)

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Regressions in PerfLabTests.LowLevelPerf

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PerfLabTests.LowLevelPerf.InterfaceInterfaceMethod

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Regressions in System.Collections.ContainsKeyTrue<Int32, Int32>