[Perf] Windows/x64: 10 Regressions on 6/17/2025 7:05:32 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22621
Queue | TigerWindows
Baseline | [d1770cc10d5f74642ee108ff5be83a6ecc30792a](https://github.com/dotnet/runtime/commit/d1770cc10d5f74642ee108ff5be83a6ecc30792a)
Compare | [2dbdff1a7aebd64b4b265d99b173cd77f088c36e](https://github.com/dotnet/runtime/commit/2dbdff1a7aebd64b4b265d99b173cd77f088c36e)
Diff | [Diff](https://github.com/dotnet/runtime/compare/d1770cc10d5f74642ee108ff5be83a6ecc30792a...2dbdff1a7aebd64b4b265d99b173cd77f088c36e)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.Tests.Perf_BitArray

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[BitArrayGet - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.Tests.Perf_BitArray.BitArrayGet(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L69-#L79>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 31.52 ns | 39.16 ns | 1.24 | 0.02 | False | | |
|<ul><li>[BitArrayNot - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.Tests.Perf_BitArray.BitArrayNot(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L66-#L67>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl2RQY/TMBCF75X6H4ZenIpsEpUulCBL7JbVIqFFaFvBEZlk0hg5dmVP2AaW/864SS9cxrE98/LeZ4MEhIFAwnuxGwJhl22dMViRdjZke74L2Rf0zfdbTTfeqyG7fHx2lOz0byxhvRTv5jPDWqoh9CxWK0LSHSarYnV9VayvVut9sSlfrcrVm+zt5vWm2Fy/LIqyKJbTpMej40FRO7JIue9tnL/o/vDKVm2899iEvEVVh7xT2l4aKmcbfYh/HqzqdJX8EVvXHbVRMciDq1GUIEijx1qkIB57+0nbOh5yt3fibzRyj/RRB3JeV8p8UKS+aWqjjvI6MI8kspKxpGNUea7p2b2MJZ2synFJJ2NyXJbz2TMcvfvJfGGHXmNI4bbXpt5z2B2p7pjCV2V6lJH81jEF9I8YekM3v9CrA85nef4MTy0HmRTgBYsTswiwWJC7O1Wmr3GxgDyHuxNLGgTXQKMNa2l7ANfzQ0E4D0dDHm3NrxZ5V63yBE+cGpKxQV5snipn+s7K/+0O43mQZ9/cR5oMSsH4kEkP0/YBVeg9dmhJLP8BtU+MzXcCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 1.87 ns | 3.46 ns | 1.85 | 0.03 | False | | |
|<ul><li>[BitArrayLengthValueCtor - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.Tests.Perf_BitArray.BitArrayLengthValueCtor(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L30-#L31>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 13.12 ns | 14.83 ns | 1.13 | 0.10 | False | | |
|<ul><li>[BitArrayGet - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.Tests.Perf_BitArray.BitArrayGet(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L69-#L79>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 4.16 μs | 5.12 μs | 1.23 | 0.00 | False | | |
|<ul><li>[BitArrayOr - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.Tests.Perf_BitArray.BitArrayOr(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L102-#L103>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 3.77 ns | 6.23 ns | 1.65 | 0.01 | False | | |
|<ul><li>[BitArrayAnd - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.Tests.Perf_BitArray.BitArrayAnd(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L99-#L100>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 3.75 ns | 6.22 ns | 1.66 | 0.02 | False | | |
|<ul><li>[BitArrayByteArrayCtor - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.Tests.Perf_BitArray.BitArrayByteArrayCtor(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L49-#L50>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 14.15 ns | 15.32 ns | 1.08 | 0.05 | False | | |
|<ul><li>[BitArraySetLengthShrink - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.Tests.Perf_BitArray.BitArraySetLengthShrink(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L129-#L135>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 16.08 ns | 19.96 ns | 1.24 | 0.10 | False | | |
|<ul><li>[BitArrayXor - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.Tests.Perf_BitArray.BitArrayXor(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L105-#L106>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 3.80 ns | 6.24 ns | 1.64 | 0.02 | False | | |
|<ul><li>[BitArrayCopyToByteArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Collections.Tests.Perf_BitArray.BitArrayCopyToByteArray(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Perf.BitArray.cs#L156-#L157>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 6.39 ns | 7.59 ns | 1.19 | 0.05 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_24_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.Tests.Perf_BitArray_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_24_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.Tests.Perf_BitArray_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_24_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.Tests.Perf_BitArray_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_24_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.Tests.Perf_BitArray_004.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_24_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.Tests.Perf_BitArray_005.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_24_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.Tests.Perf_BitArray_006.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_24_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.Tests.Perf_BitArray_007.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_24_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.Tests.Perf_BitArray_008.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_24_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.Tests.Perf_BitArray_009.png>)
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[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_24_2025/refs/heads/main_x64_Windows%2010.0.22621_Regression/System.Collections.Tests.Perf_BitArray.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.Tests.Perf_BitArray*'
```

<details>

### System.Collections.Tests.Perf_BitArray.BitArrayGet(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Tests.Perf_BitArray.BitArrayNot(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Tests.Perf_BitArray.BitArrayLengthValueCtor(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Tests.Perf_BitArray.BitArrayGet(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Tests.Perf_BitArray.BitArrayOr(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Tests.Perf_BitArray.BitArrayAnd(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Tests.Perf_BitArray.BitArrayByteArrayCtor(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Tests.Perf_BitArray.BitArraySetLengthShrink(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Tests.Perf_BitArray.BitArrayXor(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Tests.Perf_BitArray.BitArrayCopyToByteArray(Size: 4)

#### 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	d1770cc10d5f74642ee108ff5be83a6ecc30792a
Compare	2dbdff1a7aebd64b4b265d99b173cd77f088c36e
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
BitArrayGet - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	31.52 ns	39.16 ns	1.24	0.02	False
BitArrayNot - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.87 ns	3.46 ns	1.85	0.03	False
BitArrayLengthValueCtor - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	13.12 ns	14.83 ns	1.13	0.10	False
BitArrayGet - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	4.16 μs	5.12 μs	1.23	0.00	False
BitArrayOr - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	3.77 ns	6.23 ns	1.65	0.01	False
BitArrayAnd - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	3.75 ns	6.22 ns	1.66	0.02	False
BitArrayByteArrayCtor - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	14.15 ns	15.32 ns	1.08	0.05	False
BitArraySetLengthShrink - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	16.08 ns	19.96 ns	1.24	0.10	False
BitArrayXor - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	3.80 ns	6.24 ns	1.64	0.02	False
BitArrayCopyToByteArray - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	6.39 ns	7.59 ns	1.19	0.05	False

[Perf] Windows/x64: 10 Regressions on 6/17/2025 7:05:32 PM +00:00 #58144

Description

Run Information

Regressions in System.Collections.Tests.Perf_BitArray

Repro

System.Collections.Tests.Perf_BitArray.BitArrayGet(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Collections.Tests.Perf_BitArray.BitArrayNot(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Collections.Tests.Perf_BitArray.BitArrayLengthValueCtor(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Collections.Tests.Perf_BitArray.BitArrayGet(Size: 512)

ETL Files

Histogram

JIT Disasms

System.Collections.Tests.Perf_BitArray.BitArrayOr(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Collections.Tests.Perf_BitArray.BitArrayAnd(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Collections.Tests.Perf_BitArray.BitArrayByteArrayCtor(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Collections.Tests.Perf_BitArray.BitArraySetLengthShrink(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Collections.Tests.Perf_BitArray.BitArrayXor(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Collections.Tests.Perf_BitArray.BitArrayCopyToByteArray(Size: 4)

ETL Files

Histogram

JIT Disasms

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