[Perf] Linux/x64: 5 Regressions on 7/14/2025 11:26:56 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [9c0555e89d91149226cfade4a395e02b8d9401ff](https://github.com/dotnet/runtime/commit/9c0555e89d91149226cfade4a395e02b8d9401ff)
Compare | [c7b0e49e54f3f199494ee438d474f9b1c413122c](https://github.com/dotnet/runtime/commit/c7b0e49e54f3f199494ee438d474f9b1c413122c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9c0555e89d91149226cfade4a395e02b8d9401ff...c7b0e49e54f3f199494ee438d474f9b1c413122c)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in Benchstone.MDBenchF.MDSqMtx

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Test - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/Benchstone.MDBenchF.MDSqMtx.Test.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Benchstones/MDBenchF/MDSqMtx.cs#L18-#L47>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 570.72 ms | 630.54 ms | 1.10 | 0.24 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_22_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/Benchstone.MDBenchF.MDSqMtx_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_22_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/Benchstone.MDBenchF.MDSqMtx.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 'Benchstone.MDBenchF.MDSqMtx*'
```

<details>

### Benchstone.MDBenchF.MDSqMtx.Test

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [9c0555e89d91149226cfade4a395e02b8d9401ff](https://github.com/dotnet/runtime/commit/9c0555e89d91149226cfade4a395e02b8d9401ff)
Compare | [c7b0e49e54f3f199494ee438d474f9b1c413122c](https://github.com/dotnet/runtime/commit/c7b0e49e54f3f199494ee438d474f9b1c413122c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9c0555e89d91149226cfade4a395e02b8d9401ff...c7b0e49e54f3f199494ee438d474f9b1c413122c)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.Perf_Frozen&lt;Int16&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Contains_True - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.Perf_Frozen(Int16).Contains_True(Count%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Frozen/Perf_Frozen.cs#L96-#L105>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.44 μs | 1.63 μs | 1.13 | 0.03 | False | | |
|<ul><li>[Contains_True - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.Perf_Frozen(Int16).Contains_True(Count%3a%2064).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Frozen/Perf_Frozen.cs#L96-#L105>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl1RTW/TQBC9R8p/GHJZR7ixa6UtGBYBaSkIVUJNBMdqscfxovVutDumCbT/nVnHuXCZ1c7Hm/feGCQgDAQS3ov1IRB2i5UzBivSzobFN/TNwyfv/qB9+8XS+eU7LltS2oaHje8xWbneUgmXy7l4M50YhlMNoWe8WhGS7jAp8uLiLL84K4pN/qrMz8vl1aK4Kpb56+Jlnpd5Ph8nPe4cD4rakUXKPCPz/An3p1e2amPdYxOyFlUdso6ZnBoqZxu9jZsPVnW6Sv6Klet22qio5c7VKEoQpNFjLVIQ9739qm0dk9ztnXiORG6RPutAzutKmWtF6oemNuIorwNbkkS7ZAzpUaocYjqwlzGkI1V5fNKRmDw+8+nkCXbe/WKLYY1eY0jhY69NvWGxa1LdLoXvyvQoN7xk8Bf9PYbe0Iff6NUWp5Mse4LHloWMCPCCwYerwGxG7mZfmb7G2QyyDG72DGkQXAONNoyl7RZcz4eCMAxHQh5tzVeLflet8gSPrBqSY4M80dxXzvSdlf/TPRzzQQ68uY80GZSC7UN2+jB+71CF3mOHlsT8H5cWq5N6AgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 170.61 ns | 202.64 ns | 1.19 | 0.02 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_22_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Perf_Frozen%28Int16%29_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_22_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Perf_Frozen%28Int16%29_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_22_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Perf_Frozen%28Int16%29.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.Perf_Frozen&lt;Int16&gt;*'
```

<details>

### System.Collections.Perf_Frozen&lt;Int16&gt;.Contains_True(Count: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_Frozen&lt;Int16&gt;.Contains_True(Count: 64)

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [3add8d2085a23d3f79801502ac34483b84f90028](https://github.com/dotnet/runtime/commit/3add8d2085a23d3f79801502ac34483b84f90028)
Compare | [c7b0e49e54f3f199494ee438d474f9b1c413122c](https://github.com/dotnet/runtime/commit/c7b0e49e54f3f199494ee438d474f9b1c413122c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/3add8d2085a23d3f79801502ac34483b84f90028...c7b0e49e54f3f199494ee438d474f9b1c413122c)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.AddGivenSize&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Queue - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.AddGivenSize(Int32).Queue(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Add/AddGivenSize.cs#L96-#L104>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 942.68 ns | 999.92 ns | 1.06 | 0.03 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_22_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.AddGivenSize%28Int32%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_22_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.AddGivenSize%28Int32%29.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.AddGivenSize&lt;Int32&gt;*'
```

<details>

### System.Collections.AddGivenSize&lt;Int32&gt;.Queue(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [3add8d2085a23d3f79801502ac34483b84f90028](https://github.com/dotnet/runtime/commit/3add8d2085a23d3f79801502ac34483b84f90028)
Compare | [c7b0e49e54f3f199494ee438d474f9b1c413122c](https://github.com/dotnet/runtime/commit/c7b0e49e54f3f199494ee438d474f9b1c413122c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/3add8d2085a23d3f79801502ac34483b84f90028...c7b0e49e54f3f199494ee438d474f9b1c413122c)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.Perf_DefaultFrozenDictionary

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04/System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%20100).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 705.21 ns | 767.85 ns | 1.09 | 0.25 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_22_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Perf_DefaultFrozenDictionary_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/07_22_2025/refs/heads/main_x64_ubuntu%2022.04_Regression/System.Collections.Perf_DefaultFrozenDictionary.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.Perf_DefaultFrozenDictionary*'
```

<details>

### System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 100)

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>

Name	Value
Architecture	x64
OS	ubuntu 22.04
Queue	TigerUbuntu
Baseline	9c0555e89d91149226cfade4a395e02b8d9401ff
Compare	c7b0e49e54f3f199494ee438d474f9b1c413122c
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Contains_True - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.44 μs	1.63 μs	1.13	0.03	False
Contains_True - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	170.61 ns	202.64 ns	1.19	0.02	False

Uh oh!

[Perf] Linux/x64: 5 Regressions on 7/14/2025 11:26:56 PM +00:00 #117938

Description

Run Information

Regressions in Benchstone.MDBenchF.MDSqMtx

Repro

Benchstone.MDBenchF.MDSqMtx.Test

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.Perf_Frozen<Int16>

Repro

System.Collections.Perf_Frozen<Int16>.Contains_True(Count: 512)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_Frozen<Int16>.Contains_True(Count: 64)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.AddGivenSize<Int32>

Repro

System.Collections.AddGivenSize<Int32>.Queue(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.Perf_DefaultFrozenDictionary

Repro

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

ETL Files

Histogram

JIT Disasms

Docs

Metadata

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