[Perf] Linux/x64: 8 Improvements 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 | AOT:true, CompilationMode:wasm, RunKind:micro


### Improvements in System.Linq.Tests.Perf_Enumerable

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[WhereLast_LastElementMatches - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input%3a%20IEnumerable).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=H4sIAAAAAAAACl1S227TQBB9j5R/GPKyjnBtk16CglailKigNgI1EX2stvY4XrQXsztLEtH+O7u5CImXWXkuZ86cY4UEhJ6Aw0e23HlCXdxL86tYxaQvvqNrn+YmaHTiWWHx2KHDe+HpKYW5Qo2GFoLqDn0mTR9oBl//9Y/Zh+FAxRWiJXRxRyMISWrMJtXk8qy6Opu8W1XvZ+eT2fm0mF5cTC+rq7dVNauq8XHSYW/jIGssGaTSBZPmT7jPTpi6S3WHrS87FI0vtZDm1FBb08p12rwzQss6+8Ouv63YDBi5gCwHdmN1L5Ugac3CNphKG+F1Kj0EcydNk1Jx1Fn2mljdIn2RnqyTtVCfBYlHSV1CEU56a3yW9OQp5Ie7+T7m+1N4CvmRNz88+ZElPzzj4eAFemd/Yk2wRCfR5/ApSNWs4uVLErrP4YdQAXky6cZGSdA9oA+Krn9H4dc4HJTlC2ySWUcEeBPBKQrjYTQiO9/WKjQ4GkFZwnwbIRWCbaGVKmJJswYbomvg98OJkEPTRAuT+HUnHMEmXg3ZoYGfaG5rq4I2/H+6u0Pe8z3v2EeSFHIW5Usm7I6fCxQ+uP1PxcZ/AYPiSE+bAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 12.64 μs | 11.77 μs | 0.93 | 0.11 | False | | |
|<ul><li>[Skip_One - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.Skip_One(input%3a%20IEnumerable).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L194-#L196>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 21.29 μs | 15.34 μs | 0.72 | 0.12 | False | | |
|<ul><li>[SkipHalfTakeHalf - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Linq.Tests.Perf_Enumerable.SkipHalfTakeHalf(input%3a%20IEnumerable).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Linq/Perf.Enumerable.cs#L221-#L223>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 15.53 μs | 10.93 μs | 0.70 | 0.08 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/System.Linq.Tests.Perf_Enumerable_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/System.Linq.Tests.Perf_Enumerable_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/System.Linq.Tests.Perf_Enumerable_003.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/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.WhereLast_LastElementMatches(input: IEnumerable)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.Skip_One(input: IEnumerable)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Linq.Tests.Perf_Enumerable.SkipHalfTakeHalf(input: IEnumerable)

#### 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 | AOT:true, CompilationMode:wasm, RunKind:micro


### Improvements in System.Memory.Span&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Fill - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Memory.Span(Int32).Fill(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L43-#L44>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACl1RTY/TMBC9V+p/GHpxK7JNmmo/FDBiWZYPoQppU8HZJJPGyLEje0wbWP47dpNeuIzlmXlv3rxRSEDoCDi8ZeXgCLv1Djtjh3XZC/36s6Zt/mb9QSq1LOVvLOB6k6/Yq/lMBaRoCG2A1oKQZIfLPMuvr7Kbq3yzz+6K7bbY3K6z25u7TZ69zLIiy1YT0mJvApDVhjRSar2O+AvvDyt01ca6xcalLYrapZ2Q+tJQGd3IQ5w8aNHJavmH3X/dswIYWY8sAfZgul4qQdLonakxlo7CdbH05PUXqeuYClBr2N+o6iPSJ+nIWFkJ9V6Q+C6pjSzCSme0W0abeAzJuDc/x+S8Co8hmXTz8UkmlXx8VvPZM/TW/MSKoEQr0SXwzktV78PmJYmuT+CbUB75Pgx5MMEStE/ovKL7X2jFAeezNH2GY4sWJwZ4EcgpGONgsSDzeKqUr3GxgDSFx1OgVAimgUaqwCX1AYwPVwN3BkdBFnUdThjNr1phCY5ha1iODfwi81QZ5TvN/5c7jHnHz7pDH0lSyFmwLx5hmL47FM5b7FATW/0DG5Mgb3ICAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=>)</li></ul> | 40.04 ns | 33.66 ns | 0.84 | 0.14 | False | | |
|<ul><li>[Reverse - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Memory.Span(Int32).Reverse(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L46-#L47>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 66.88 ns | 55.11 ns | 0.82 | 0.05 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/System.Memory.Span%28Int32%29_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/System.Memory.Span%28Int32%29_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/System.Memory.Span%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.Memory.Span&lt;Int32&gt;*'
```

<details>

### System.Memory.Span&lt;Int32&gt;.Fill(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Int32&gt;.Reverse(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 | 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 | AOT:true, CompilationMode:wasm, RunKind:micro


### Improvements in LinqBenchmarks

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Order00LinqQueryX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/ViperUbuntu/LinqBenchmarks.Order00LinqQueryX.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Linq/Linq.cs#L320-#L333>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 4.18 secs | 881.12 ms | 0.21 | 0.11 | False | | |
|<ul><li>[Order00LinqMethodX - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/ViperUbuntu/LinqBenchmarks.Order00LinqMethodX.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/runtime/Linq/Linq.cs#L335-#L348>)</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 secs | 887.97 ms | 0.21 | 0.12 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/LinqBenchmarks_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/LinqBenchmarks_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/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.Order00LinqQueryX

#### ETL Files

#### Histogram

#### JIT Disasms

### LinqBenchmarks.Order00LinqMethodX

#### 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 | AOT:true, CompilationMode:wasm, RunKind:micro


### Improvements in System.Collections.ContainsTrueComparer&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[SortedSet - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/ViperUbuntu/System.Collections.ContainsTrueComparer(String).SortedSet(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Contains/ContainsTrueComparer.cs#L61-#L70>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 396.52 μs | 316.46 μs | 0.80 | 0.20 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/System.Collections.ContainsTrueComparer%28String%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/08_21_2025/refs/heads/main_x64_ubuntu%2022.04_AOT%3Dtrue_CompilationMode%3Dwasm_RunKind%3Dmicro/ViperUbuntu_Improvement/System.Collections.ContainsTrueComparer%28String%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.ContainsTrueComparer&lt;String&gt;*'
```

<details>

### System.Collections.ContainsTrueComparer&lt;String&gt;.SortedSet(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	ubuntu 22.04
Queue	ViperUbuntu
Baseline	1209ddec456f1d7871847b07b46f00d44012d687
Compare	10bc77650ffd5462f9b66cbc8f631460e722c74f
Diff	Diff
Configs	AOT:true, CompilationMode:wasm, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
WhereLast_LastElementMatches - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	12.64 μs	11.77 μs	0.93	0.11	False
Skip_One - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	21.29 μs	15.34 μs	0.72	0.12	False
SkipHalfTakeHalf - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	15.53 μs	10.93 μs	0.70	0.08	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Fill - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	40.04 ns	33.66 ns	0.84	0.14	False
Reverse - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	66.88 ns	55.11 ns	0.82	0.05	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Order00LinqQueryX - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	4.18 secs	881.12 ms	0.21	0.11	False
Order00LinqMethodX - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	4.16 secs	887.97 ms	0.21	0.12	False

[Perf] Linux/x64: 8 Improvements on 8/16/2025 4:36:35 PM +00:00 #61037

Description

Run Information

Improvements in System.Linq.Tests.Perf_Enumerable

Repro

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

ETL Files

Histogram

JIT Disasms

System.Linq.Tests.Perf_Enumerable.Skip_One(input: IEnumerable)

ETL Files

Histogram

JIT Disasms

System.Linq.Tests.Perf_Enumerable.SkipHalfTakeHalf(input: IEnumerable)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Improvements in System.Memory.Span<Int32>

Repro

System.Memory.Span<Int32>.Fill(Size: 512)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Int32>.Reverse(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Improvements in LinqBenchmarks

Repro

LinqBenchmarks.Order00LinqQueryX

ETL Files

Histogram

JIT Disasms

LinqBenchmarks.Order00LinqMethodX

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Improvements in System.Collections.ContainsTrueComparer<String>

Repro

System.Collections.ContainsTrueComparer<String>.SortedSet(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

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