[Perf] Linux/x64: 23 Regressions on 8/16/2025 4:36:35 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [1209ddec456f1d7871847b07b46f00d44012d687](https://github.com/dotnet/runtime/commit/1209ddec456f1d7871847b07b46f00d44012d687)
Compare | [10bc77650ffd5462f9b66cbc8f631460e722c74f](https://github.com/dotnet/runtime/commit/10bc77650ffd5462f9b66cbc8f631460e722c74f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/1209ddec456f1d7871847b07b46f00d44012d687...10bc77650ffd5462f9b66cbc8f631460e722c74f)
Configs | CompilationMode:wasm, RunKind:micro


### Regressions in System.Linq.Tests.Perf_Enumerable

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[WhereSingleOrDefault_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereSingleOrDefault_LastElementMatches(input%3a%20List).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L130-#L132>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 12.41 μs | 16.62 μs | 1.34 | 0.14 | False | | |
|<ul><li>[SelectToList - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.SelectToList(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L262-#L264>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 16.62 μs | 24.65 μs | 1.48 | 0.10 | False | | |
|<ul><li>[Select - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.Select(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L34-#L36>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 10.39 μs | 18.18 μs | 1.75 | 0.05 | False | | |
|<ul><li>[WhereAny_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.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> | 7.31 μs | 11.89 μs | 1.63 | 0.14 | False | | |
|<ul><li>[WhereSingle_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereSingle_LastElementMatches(input%3a%20List).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L124-#L126>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.69 μs | 11.70 μs | 1.21 | 0.12 | False | | |
|<ul><li>[WhereSingle_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereSingle_LastElementMatches(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L124-#L126>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 7.72 μs | 11.64 μs | 1.51 | 0.11 | False | | |
|<ul><li>[WhereAny_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input%3a%20List).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.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> | 9.15 μs | 11.50 μs | 1.26 | 0.13 | False | | |
|<ul><li>[WhereLast_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input%3a%20List).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L66-#L68>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.22 μs | 11.90 μs | 1.29 | 0.19 | False | | |
|<ul><li>[WhereSelect - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereSelect(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L54-#L56>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 25.03 μs | 38.41 μs | 1.53 | 0.13 | False | | |
|<ul><li>[WhereFirst_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereFirst_LastElementMatches(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L60-#L62>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.71 μs | 16.14 μs | 1.66 | 0.17 | False | | |
|<ul><li>[EmptyTakeSelectToArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.EmptyTakeSelectToArray.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L406-#L407>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 150.90 ns | 611.37 ns | 4.05 | 0.12 | False | | |
|<ul><li>[WhereLast_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L66-#L68>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 7.59 μs | 11.75 μs | 1.55 | 0.09 | False | | |
|<ul><li>[WhereSingleOrDefault_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereSingleOrDefault_LastElementMatches(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L130-#L132>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 7.47 μs | 11.77 μs | 1.57 | 0.13 | False | | |
|<ul><li>[Where - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.Where(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L48-#L50>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 11.55 μs | 20.07 μs | 1.74 | 0.08 | False | | |
|<ul><li>[WhereFirst_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereFirst_LastElementMatches(input%3a%20List).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L60-#L62>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.24 μs | 11.69 μs | 1.27 | 0.12 | False | | |
|<ul><li>[SelectToArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.SelectToArray(input%3a%20Array).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L250-#L252>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 13.26 μs | 21.14 μs | 1.59 | 0.08 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_004.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_005.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_006.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_007.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_008.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_009.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_010.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_011.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_012.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_013.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_014.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_015.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable_016.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Linq.Tests.Perf_Enumerable.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.Linq.Tests.Perf_Enumerable*'
```

<details>

### System.Linq.Tests.Perf_Enumerable.WhereSingleOrDefault_LastElementMatches(input: List)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.SelectToList(input: Array)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.Select(input: Array)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: Array)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereSingle_LastElementMatches(input: List)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereSingle_LastElementMatches(input: Array)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: List)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input: List)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereSelect(input: Array)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereFirst_LastElementMatches(input: Array)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.EmptyTakeSelectToArray

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input: Array)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereSingleOrDefault_LastElementMatches(input: Array)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.Where(input: Array)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.WhereFirst_LastElementMatches(input: List)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.SelectToArray(input: Array)

#### 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 | ViperUbuntu
Baseline | [1209ddec456f1d7871847b07b46f00d44012d687](https://github.com/dotnet/runtime/commit/1209ddec456f1d7871847b07b46f00d44012d687)
Compare | [10bc77650ffd5462f9b66cbc8f631460e722c74f](https://github.com/dotnet/runtime/commit/10bc77650ffd5462f9b66cbc8f631460e722c74f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/1209ddec456f1d7871847b07b46f00d44012d687...10bc77650ffd5462f9b66cbc8f631460e722c74f)
Configs | CompilationMode:wasm, RunKind:micro


### Regressions in LinqBenchmarks

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Where01LinqMethodNestedX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/LinqBenchmarks.Where01LinqMethodNestedX.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Linq/Linq.cs#L236-#L252>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 5.88 secs | 6.33 secs | 1.08 | 0.08 | False | | |
|<ul><li>[Where00LinqMethodX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/LinqBenchmarks.Where00LinqMethodX.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Linq/Linq.cs#L148-#L164>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 7.51 secs | 9.65 secs | 1.28 | 0.06 | False | | |
|<ul><li>[Where00LinqQueryX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/LinqBenchmarks.Where00LinqQueryX.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Linq/Linq.cs#L127-#L146>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 7.45 secs | 9.47 secs | 1.27 | 0.06 | False | | |
|<ul><li>[Where01LinqQueryX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/LinqBenchmarks.Where01LinqQueryX.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Linq/Linq.cs#L195-#L215>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 4.20 secs | 4.79 secs | 1.14 | 0.14 | False | | |
|<ul><li>[Where01LinqMethodX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/LinqBenchmarks.Where01LinqMethodX.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Linq/Linq.cs#L217-#L234>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 4.30 secs | 4.85 secs | 1.13 | 0.09 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/LinqBenchmarks_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/LinqBenchmarks_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/LinqBenchmarks_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/LinqBenchmarks_004.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/LinqBenchmarks_005.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/LinqBenchmarks.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 'LinqBenchmarks*'
```

<details>

### LinqBenchmarks.Where01LinqMethodNestedX

#### ETL Files

#### Histogram

#### JIT Disasms

### LinqBenchmarks.Where00LinqMethodX

#### ETL Files

#### Histogram

#### JIT Disasms

### LinqBenchmarks.Where00LinqQueryX

#### ETL Files

#### Histogram

#### JIT Disasms

### LinqBenchmarks.Where01LinqQueryX

#### ETL Files

#### Histogram

#### JIT Disasms

### LinqBenchmarks.Where01LinqMethodX

#### 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 | ViperUbuntu
Baseline | [1209ddec456f1d7871847b07b46f00d44012d687](https://github.com/dotnet/runtime/commit/1209ddec456f1d7871847b07b46f00d44012d687)
Compare | [10bc77650ffd5462f9b66cbc8f631460e722c74f](https://github.com/dotnet/runtime/commit/10bc77650ffd5462f9b66cbc8f631460e722c74f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/1209ddec456f1d7871847b07b46f00d44012d687...10bc77650ffd5462f9b66cbc8f631460e722c74f)
Configs | CompilationMode:wasm, RunKind:micro


### Regressions in System.Tests.Perf_String

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Join_Enumerable - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Tests.Perf_String.Join_Enumerable.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Runtime/Perf.String.cs#L66-#L68>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 4.19 μs | 4.97 μs | 1.19 | 0.04 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Tests.Perf_String_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Tests.Perf_String.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_String*'
```

<details>

### System.Tests.Perf_String.Join_Enumerable

#### 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 | ViperUbuntu
Baseline | [1209ddec456f1d7871847b07b46f00d44012d687](https://github.com/dotnet/runtime/commit/1209ddec456f1d7871847b07b46f00d44012d687)
Compare | [10bc77650ffd5462f9b66cbc8f631460e722c74f](https://github.com/dotnet/runtime/commit/10bc77650ffd5462f9b66cbc8f631460e722c74f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/1209ddec456f1d7871847b07b46f00d44012d687...10bc77650ffd5462f9b66cbc8f631460e722c74f)
Configs | CompilationMode:wasm, RunKind:micro


### Regressions in System.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[FirstTenSegments - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Buffers.Tests.ReadOnlySequenceTests(Char).FirstTenSegments.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Buffers/ReadOnlySequenceTests.cs#L139-#L141>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 27.31 ns | 32.12 ns | 1.18 | 0.47 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Buffers.Tests.ReadOnlySequenceTests%28Char%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_19_2025/refs/heads/main_x64_ubuntu%2022.04_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Regression/System.Buffers.Tests.ReadOnlySequenceTests%28Char%29.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;*'
```

<details>

### System.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;.FirstTenSegments

#### 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	ViperUbuntu
Baseline	1209ddec456f1d7871847b07b46f00d44012d687
Compare	10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff	Diff
Configs	CompilationMode:wasm, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
WhereSingleOrDefault_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	12.41 μs	16.62 μs	1.34	0.14	False
SelectToList - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	16.62 μs	24.65 μs	1.48	0.10	False
Select - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	10.39 μs	18.18 μs	1.75	0.05	False
WhereAny_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	7.31 μs	11.89 μs	1.63	0.14	False
WhereSingle_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.69 μs	11.70 μs	1.21	0.12	False
WhereSingle_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	7.72 μs	11.64 μs	1.51	0.11	False
WhereAny_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.15 μs	11.50 μs	1.26	0.13	False
WhereLast_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.22 μs	11.90 μs	1.29	0.19	False
WhereSelect - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	25.03 μs	38.41 μs	1.53	0.13	False
WhereFirst_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.71 μs	16.14 μs	1.66	0.17	False
EmptyTakeSelectToArray - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	150.90 ns	611.37 ns	4.05	0.12	False
WhereLast_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	7.59 μs	11.75 μs	1.55	0.09	False
WhereSingleOrDefault_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	7.47 μs	11.77 μs	1.57	0.13	False
Where - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	11.55 μs	20.07 μs	1.74	0.08	False
WhereFirst_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.24 μs	11.69 μs	1.27	0.12	False
SelectToArray - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	13.26 μs	21.14 μs	1.59	0.08	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
Where01LinqMethodNestedX - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	5.88 secs	6.33 secs	1.08	0.08	False
Where00LinqMethodX - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	7.51 secs	9.65 secs	1.28	0.06	False
Where00LinqQueryX - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	7.45 secs	9.47 secs	1.27	0.06	False
Where01LinqQueryX - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	4.20 secs	4.79 secs	1.14	0.14	False
Where01LinqMethodX - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	4.30 secs	4.85 secs	1.13	0.09	False

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[Perf] Linux/x64: 23 Regressions on 8/16/2025 4:36:35 PM +00:00 #60899

Description

Run Information

Regressions in System.Linq.Tests.Perf_Enumerable

Repro

System.Linq.Tests.Perf_Enumerable.WhereSingleOrDefault_LastElementMatches(input: List)

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JIT Disasms

System.Linq.Tests.Perf_Enumerable.SelectToList(input: Array)

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System.Linq.Tests.Perf_Enumerable.Select(input: Array)

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System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: Array)

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System.Linq.Tests.Perf_Enumerable.WhereSingle_LastElementMatches(input: List)

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System.Linq.Tests.Perf_Enumerable.WhereSingle_LastElementMatches(input: Array)

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System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: List)

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System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input: List)

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System.Linq.Tests.Perf_Enumerable.WhereSelect(input: Array)

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System.Linq.Tests.Perf_Enumerable.WhereFirst_LastElementMatches(input: Array)

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System.Linq.Tests.Perf_Enumerable.EmptyTakeSelectToArray

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System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input: Array)

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System.Linq.Tests.Perf_Enumerable.WhereSingleOrDefault_LastElementMatches(input: Array)

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System.Linq.Tests.Perf_Enumerable.Where(input: Array)

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System.Linq.Tests.Perf_Enumerable.WhereFirst_LastElementMatches(input: List)

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System.Linq.Tests.Perf_Enumerable.SelectToArray(input: Array)

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Docs

Run Information

Regressions in LinqBenchmarks

Repro

LinqBenchmarks.Where01LinqMethodNestedX

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JIT Disasms

LinqBenchmarks.Where00LinqMethodX

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