[Perf] Linux/x64: 50 Regressions on 10/19/2023 6:52:58 PM

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a](https://github.com/dotnet/runtime/commit/04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a)
Compare | [5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f](https://github.com/dotnet/runtime/commit/5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a...5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:false, MonoInterpreter:true, RunKind:micro_mono


### Regressions in System.Memory.Span&lt;Byte&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[StartsWith - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Memory.Span(Byte).StartsWith(Size%3a%2033).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L61-#L62>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 65.51 ns | 78.01 ns | 1.19 | 0.17 | False | | |
|<ul><li>[IndexOfAnyThreeValues - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Memory.Span(Byte).IndexOfAnyThreeValues(Size%3a%204).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L84-#L85>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 46.96 ns | 57.79 ns | 1.23 | 0.35 | False | | |
|<ul><li>[IndexOfAnyTwoValues - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Memory.Span(Byte).IndexOfAnyTwoValues(Size%3a%2033).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L81-#L82>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 74.22 ns | 80.40 ns | 1.08 | 0.16 | False | | |
|<ul><li>[Reverse - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Memory.Span(Byte).Reverse(Size%3a%2033).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> | 71.13 ns | 78.86 ns | 1.11 | 0.24 | False | | |
|<ul><li>[Reverse - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Memory.Span(Byte).Reverse(Size%3a%204).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> | 62.13 ns | 72.81 ns | 1.17 | 0.13 | False | | |
|<ul><li>[SequenceEqual - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Memory.Span(Byte).SequenceEqual(Size%3a%2033).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L52-#L53>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACpVU227TQBB9j8Q/7JsdcFzHMW0JuFJakIpoKNQBHqqq2tqTeMte3L2QBCG+nbGTtnFKi5Alyzt7ztk5M+PlYElWKm0/UgGGpKSgFp8rDv6Zk58dOBgaq5mcBaRZ1bh1pEvOO943Jgs1N2E/Ckei2E3CODqOw9M5Dz+BnnoB8eZM9ha7SY+Kwgv+Qui/Ou6HEzYD/YDCpAVek75cOWkdakdJONICWbdQjlBaR1C/Ag2b6LhGN2e05fkj8v39xwn9/TZl08ZdQmHm7g2ssjIYoTlsUjLQP1C87WO+7aNz8bozBop8ECCt6fwi8xI3yKFjvDiDSpE0JV6hrAS7o9EAE8hqoQ41lXnZ4DRMzU4JtDA7gjK5BRzpvGQWcounNXD06hGlH9ltEr2XmIBp5qfZy5bGggjHIJRehllF5ZvDpYUDtH3jQObw7sZR7mfsJwzJYNC9l8GBO1JyymZOU8uUNOfekRIV481qrArwLkj6m3iWIbzwnj3FPDn5Ol7Dp5QbeBo9VlKNTif/R3iPs6ArDfi+TUy7f/Aw9AHHYI0XLNfqUqBWu5hHCtsJeqKq9Ve7WxPsdGZxTshB/b9C3Xk/juJBL9rrxckk2h/GyTCJw/jlINnd23sRRcMo6qKIcUJQjaUnVM8uBV34jWDdvIA875Kr5dYJwV1zg9pOcwWgTqXVNc7DA/AZGMdtqjHrwt9wsoqPcOzpDJUG3ZbatWKSfMeypExK0JsXkpKbQA2ywP3ab15Sbcmc2ZL4BjQDk97dTwFZ5Io7IdPt/JaruElXCSHQMssh9d5iGfE3XK6XNYX40nTrmKk4syldgOn+AW7l0QwvBQAA>)</li></ul> | 73.14 ns | 77.65 ns | 1.06 | 0.18 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Byte%29_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Byte%29_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Byte%29_3.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Byte%29_4.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Byte%29_5.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Byte%29_6.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Byte%29.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

<details>
   <summary>Repro Steps</summary>


#### Prerequisites (Build files either built locally or downloaded from payload above)
- Libraries build extracted to `runtime/artifacts` or build instructions: [Libraries README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/libraries/README.md) args: `-subset libs+libs.tests -rc release -configuration Release -arch $RunArch -framework net8.0`
- CoreCLR product build extracted to `runtime/artifacts/bin/coreclr/$RunOS.$RunArch.Release`, build instructions: [CoreCLR README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/coreclr/README.md) args: `-subset clr+libs -rc release -configuration Release -arch $RunArch -framework net8.0`
- Mono Runtime build extracted to `runtime/artifacts/bin/mono/$RunOS.$RunArch.Release`, build instructions: [MONO README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/mono/README.md) args: `-arch $RunArch -os $RunOS -s mono+libs+host+packs -c Release`
- Dotnet SDK installed for dotnet commands
- Running commands from the runtime folder

Linux
```cmd
# Set $RunDir to the runtime directory
RunDir=`pwd`

# Set the OS, arch, and OSId
RunOS='linux'
RunOSId='linux'
RunArch='x64'

# Create mono dotnet
mkdir -p $RunDir/artifacts/dotnet-mono
$RunDir/build.sh -subset libs.pretest -configuration release -ci -arch $RunArch -testscope innerloop /p:RuntimeArtifactsPath=$RunDir/artifacts/bin/mono/$RunOS.$RunArch.Release /p:RuntimeFlavor=mono
cp $RunDir/artifacts/bin/runtime/net8.0-$RunOS-Release-$RunArch/* $RunDir/artifacts/bin/testhost/net8.0-$RunOS-Release-$RunArch/shared/Microsoft.NETCore.App/8.0.0 -rf
cp $RunDir/artifacts/bin/testhost/net8.0-$RunOS-Release-$RunArch/* $RunDir/artifacts/dotnet-mono -r
cp $RunDir/artifacts/bin/coreclr/$RunOS.$RunArch.Release/corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun

# Create Core Root
$RunDir/src/tests/build.sh release $RunArch generatelayoutonly /p:LibrariesConfiguration=Release

# Clone performance 
git clone --branch main --depth 1 --quiet https://github.com/dotnet/performance.git $RunDir/performance

# Use Interpreter
export MONO_ENV_OPTIONS="--interpreter"

# One line run:
python3 $RunDir/performance/scripts/benchmarks_ci.py --csproj $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Memory.Span&lt;Byte&gt;*' --bdn-artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun" 

# Individual Commands:
# Restore 
dotnet restore $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --packages $RunDir/performance/artifacts/packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Build
dotnet build $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore /p:NuGetPackageRoot=$RunDir/performance/artifacts/packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Run
dotnet run --project $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore --no-build -- --filter 'System.Memory.Span&lt;Byte&gt;*' --anyCategories Libraries Runtime " --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun --artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --packages $RunDir/performance/artifacts/packages
```

Windows
```cmd
# Set $RunDir to the runtime directory
$RunDir="FullPathHere"

# Set the OS, arch, and OSId
RunOS='windows'
RunOSId='win'
RunArch='x64'

# Create mono dotnet
mkdir -p $RunDir/artifacts/dotnet-mono
$RunDir/build.sh -subset libs.pretest -configuration release -ci -arch $RunArch -testscope innerloop /p:RuntimeArtifactsPath=$RunDir\artifacts\bin\mono\$RunOS.$RunArch.Release /p:RuntimeFlavor=mono
xcopy $RunDir\artifacts\bin\runtime\net8.0-$RunOS-Release-$RunArch\ $RunDir\artifacts\bin\testhost\net8.0-$RunOS-Release-$RunArch\shared\Microsoft.NETCore.App\8.0.0\ /e /y
xcopy $RunDir\artifacts\bin\testhost\net8.0-$RunOS-Release-$RunArch\ $RunDir\artifacts\dotnet-mono\ /e /y
xcopy $RunDir\artifacts\bin\coreclr\$RunOS.$RunArch.Release\corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun /y

# Create Core Root
$RunDir\src\tests\build.cmd release $RunArch generatelayoutonly /p:LibrariesConfiguration=Release

# Clone performance 
git clone --branch main --depth 1 --quiet https://github.com/dotnet/performance.git $RunDir\performance

# Use Interpreter
export MONO_ENV_OPTIONS="--interpreter"

# One line run:
python3 $RunDir\performance\scripts\benchmarks_ci.py --csproj $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Memory.Span&lt;Byte&gt;*' --bdn-artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun.exe" 

# Individual Commands:
# Restore 
dotnet restore $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --packages $RunDir\performance\artifacts\packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Build
dotnet build $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore /p:NuGetPackageRoot=$RunDir\performance\artifacts\packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Run
dotnet run --project $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore --no-build -- --filter 'System.Memory.Span&lt;Byte&gt;*' --anyCategories Libraries Runtime " --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun.exe --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages
```

</details>

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-ea11f0a1-9f2c-4802-aa32-c38cbdf2b8bcae1d1740f94421ea7/a72d7f7b-dab6-4551-9ab9-683c8b3fcbc2.zip?sv=2021-08-06&se=2023-11-18T08%3A10%3A34Z&sr=c&sp=rl&sig=xD2n4GUz%2BEWMOpfcr%2BdyfbtQqZcLQ4oYQSWrf1bU0Wk%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9f47ac36-f899-4dea-822c-46fbbf6cca6833bf870dd5944bd87/36189307-fb1f-4f26-ab90-c3cdbbf7a1a9.zip?sv=2021-08-06&se=2023-11-19T22%3A20%3A51Z&sr=c&sp=rl&sig=nHq0wsZiDhLbgHhuRj4Krjo%2FsWXHxR9DXx8GpxeObRE%3D>)
### System.Memory.Span&lt;Byte&gt;.StartsWith(Size: 33)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Byte&gt;.IndexOfAnyThreeValues(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Byte&gt;.IndexOfAnyTwoValues(Size: 33)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Byte&gt;.Reverse(Size: 33)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Byte&gt;.Reverse(Size: 4)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Byte&gt;.SequenceEqual(Size: 33)

#### 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 | [04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a](https://github.com/dotnet/runtime/commit/04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a)
Compare | [5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f](https://github.com/dotnet/runtime/commit/5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a...5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:false, MonoInterpreter:true, RunKind:micro_mono


### Regressions in System.Text.Perf_Ascii

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Equals_Chars - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Text.Perf_Ascii.Equals_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#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> | 350.71 ns | 375.01 ns | 1.07 | 0.03 | False | | |
|<ul><li>[FromUtf16 - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Text.Perf_Ascii.FromUtf16(Size%3a%206).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Ascii.cs#L103-#L104>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 93.59 ns | 106.49 ns | 1.14 | 0.11 | False | | |
|<ul><li>[ToUpperInPlace_Chars - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Text.Perf_Ascii.ToUpperInPlace_Chars(Size%3a%206).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Ascii.cs#L97-#L98>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 91.94 ns | 103.39 ns | 1.12 | 0.06 | False | | |
|<ul><li>[EqualsIgnoreCase_DifferentCase_Chars - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/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#L64-#L65>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.46 μs | 2.65 μs | 1.08 | 0.06 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Text.Perf_Ascii_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Text.Perf_Ascii_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Text.Perf_Ascii_3.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Text.Perf_Ascii_4.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Text.Perf_Ascii.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

<details>
   <summary>Repro Steps</summary>


#### Prerequisites (Build files either built locally or downloaded from payload above)
- Libraries build extracted to `runtime/artifacts` or build instructions: [Libraries README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/libraries/README.md) args: `-subset libs+libs.tests -rc release -configuration Release -arch $RunArch -framework net8.0`
- CoreCLR product build extracted to `runtime/artifacts/bin/coreclr/$RunOS.$RunArch.Release`, build instructions: [CoreCLR README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/coreclr/README.md) args: `-subset clr+libs -rc release -configuration Release -arch $RunArch -framework net8.0`
- Mono Runtime build extracted to `runtime/artifacts/bin/mono/$RunOS.$RunArch.Release`, build instructions: [MONO README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/mono/README.md) args: `-arch $RunArch -os $RunOS -s mono+libs+host+packs -c Release`
- Dotnet SDK installed for dotnet commands
- Running commands from the runtime folder

Linux
```cmd
# Set $RunDir to the runtime directory
RunDir=`pwd`

# Set the OS, arch, and OSId
RunOS='linux'
RunOSId='linux'
RunArch='x64'

# Create mono dotnet
mkdir -p $RunDir/artifacts/dotnet-mono
$RunDir/build.sh -subset libs.pretest -configuration release -ci -arch $RunArch -testscope innerloop /p:RuntimeArtifactsPath=$RunDir/artifacts/bin/mono/$RunOS.$RunArch.Release /p:RuntimeFlavor=mono
cp $RunDir/artifacts/bin/runtime/net8.0-$RunOS-Release-$RunArch/* $RunDir/artifacts/bin/testhost/net8.0-$RunOS-Release-$RunArch/shared/Microsoft.NETCore.App/8.0.0 -rf
cp $RunDir/artifacts/bin/testhost/net8.0-$RunOS-Release-$RunArch/* $RunDir/artifacts/dotnet-mono -r
cp $RunDir/artifacts/bin/coreclr/$RunOS.$RunArch.Release/corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun

# Create Core Root
$RunDir/src/tests/build.sh release $RunArch generatelayoutonly /p:LibrariesConfiguration=Release

# Clone performance 
git clone --branch main --depth 1 --quiet https://github.com/dotnet/performance.git $RunDir/performance

# Use Interpreter
export MONO_ENV_OPTIONS="--interpreter"

# One line run:
python3 $RunDir/performance/scripts/benchmarks_ci.py --csproj $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Text.Perf_Ascii*' --bdn-artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun" 

# Individual Commands:
# Restore 
dotnet restore $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --packages $RunDir/performance/artifacts/packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Build
dotnet build $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore /p:NuGetPackageRoot=$RunDir/performance/artifacts/packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Run
dotnet run --project $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore --no-build -- --filter 'System.Text.Perf_Ascii*' --anyCategories Libraries Runtime " --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun --artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --packages $RunDir/performance/artifacts/packages
```

Windows
```cmd
# Set $RunDir to the runtime directory
$RunDir="FullPathHere"

# Set the OS, arch, and OSId
RunOS='windows'
RunOSId='win'
RunArch='x64'

# Create mono dotnet
mkdir -p $RunDir/artifacts/dotnet-mono
$RunDir/build.sh -subset libs.pretest -configuration release -ci -arch $RunArch -testscope innerloop /p:RuntimeArtifactsPath=$RunDir\artifacts\bin\mono\$RunOS.$RunArch.Release /p:RuntimeFlavor=mono
xcopy $RunDir\artifacts\bin\runtime\net8.0-$RunOS-Release-$RunArch\ $RunDir\artifacts\bin\testhost\net8.0-$RunOS-Release-$RunArch\shared\Microsoft.NETCore.App\8.0.0\ /e /y
xcopy $RunDir\artifacts\bin\testhost\net8.0-$RunOS-Release-$RunArch\ $RunDir\artifacts\dotnet-mono\ /e /y
xcopy $RunDir\artifacts\bin\coreclr\$RunOS.$RunArch.Release\corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun /y

# Create Core Root
$RunDir\src\tests\build.cmd release $RunArch generatelayoutonly /p:LibrariesConfiguration=Release

# Clone performance 
git clone --branch main --depth 1 --quiet https://github.com/dotnet/performance.git $RunDir\performance

# Use Interpreter
export MONO_ENV_OPTIONS="--interpreter"

# One line run:
python3 $RunDir\performance\scripts\benchmarks_ci.py --csproj $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Text.Perf_Ascii*' --bdn-artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun.exe" 

# Individual Commands:
# Restore 
dotnet restore $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --packages $RunDir\performance\artifacts\packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Build
dotnet build $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore /p:NuGetPackageRoot=$RunDir\performance\artifacts\packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Run
dotnet run --project $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore --no-build -- --filter 'System.Text.Perf_Ascii*' --anyCategories Libraries Runtime " --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun.exe --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages
```

</details>

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-ea11f0a1-9f2c-4802-aa32-c38cbdf2b8bcae1d1740f94421ea7/a72d7f7b-dab6-4551-9ab9-683c8b3fcbc2.zip?sv=2021-08-06&se=2023-11-18T08%3A10%3A34Z&sr=c&sp=rl&sig=xD2n4GUz%2BEWMOpfcr%2BdyfbtQqZcLQ4oYQSWrf1bU0Wk%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9f47ac36-f899-4dea-822c-46fbbf6cca6833bf870dd5944bd87/36189307-fb1f-4f26-ab90-c3cdbbf7a1a9.zip?sv=2021-08-06&se=2023-11-19T22%3A20%3A51Z&sr=c&sp=rl&sig=nHq0wsZiDhLbgHhuRj4Krjo%2FsWXHxR9DXx8GpxeObRE%3D>)
### System.Text.Perf_Ascii.Equals_Chars(Size: 128)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Ascii.FromUtf16(Size: 6)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Ascii.ToUpperInPlace_Chars(Size: 6)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Perf_Ascii.EqualsIgnoreCase_DifferentCase_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 | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a](https://github.com/dotnet/runtime/commit/04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a)
Compare | [5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f](https://github.com/dotnet/runtime/commit/5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a...5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:false, MonoInterpreter:true, RunKind:micro_mono


### Regressions in System.Memory.Span&lt;Char&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[SequenceEqual - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Memory.Span(Char).SequenceEqual(Size%3a%2033).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L52-#L53>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 86.96 ns | 107.99 ns | 1.24 | 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_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Memory.Span(Char).Reverse(Size%3a%2033).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> | 85.72 ns | 93.38 ns | 1.09 | 0.23 | False | | |
|<ul><li>[Reverse - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Memory.Span(Char).Reverse(Size%3a%204).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> | 56.44 ns | 66.77 ns | 1.18 | 0.24 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Char%29_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Char%29_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Char%29_3.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Memory.Span%28Char%29.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

<details>
   <summary>Repro Steps</summary>


#### Prerequisites (Build files either built locally or downloaded from payload above)
- Libraries build extracted to `runtime/artifacts` or build instructions: [Libraries README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/libraries/README.md) args: `-subset libs+libs.tests -rc release -configuration Release -arch $RunArch -framework net8.0`
- CoreCLR product build extracted to `runtime/artifacts/bin/coreclr/$RunOS.$RunArch.Release`, build instructions: [CoreCLR README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/coreclr/README.md) args: `-subset clr+libs -rc release -configuration Release -arch $RunArch -framework net8.0`
- Mono Runtime build extracted to `runtime/artifacts/bin/mono/$RunOS.$RunArch.Release`, build instructions: [MONO README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/mono/README.md) args: `-arch $RunArch -os $RunOS -s mono+libs+host+packs -c Release`
- Dotnet SDK installed for dotnet commands
- Running commands from the runtime folder

Linux
```cmd
# Set $RunDir to the runtime directory
RunDir=`pwd`

# Set the OS, arch, and OSId
RunOS='linux'
RunOSId='linux'
RunArch='x64'

# Create mono dotnet
mkdir -p $RunDir/artifacts/dotnet-mono
$RunDir/build.sh -subset libs.pretest -configuration release -ci -arch $RunArch -testscope innerloop /p:RuntimeArtifactsPath=$RunDir/artifacts/bin/mono/$RunOS.$RunArch.Release /p:RuntimeFlavor=mono
cp $RunDir/artifacts/bin/runtime/net8.0-$RunOS-Release-$RunArch/* $RunDir/artifacts/bin/testhost/net8.0-$RunOS-Release-$RunArch/shared/Microsoft.NETCore.App/8.0.0 -rf
cp $RunDir/artifacts/bin/testhost/net8.0-$RunOS-Release-$RunArch/* $RunDir/artifacts/dotnet-mono -r
cp $RunDir/artifacts/bin/coreclr/$RunOS.$RunArch.Release/corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun

# Create Core Root
$RunDir/src/tests/build.sh release $RunArch generatelayoutonly /p:LibrariesConfiguration=Release

# Clone performance 
git clone --branch main --depth 1 --quiet https://github.com/dotnet/performance.git $RunDir/performance

# Use Interpreter
export MONO_ENV_OPTIONS="--interpreter"

# One line run:
python3 $RunDir/performance/scripts/benchmarks_ci.py --csproj $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Memory.Span&lt;Char&gt;*' --bdn-artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun" 

# Individual Commands:
# Restore 
dotnet restore $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --packages $RunDir/performance/artifacts/packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Build
dotnet build $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore /p:NuGetPackageRoot=$RunDir/performance/artifacts/packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Run
dotnet run --project $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore --no-build -- --filter 'System.Memory.Span&lt;Char&gt;*' --anyCategories Libraries Runtime " --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun --artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --packages $RunDir/performance/artifacts/packages
```

Windows
```cmd
# Set $RunDir to the runtime directory
$RunDir="FullPathHere"

# Set the OS, arch, and OSId
RunOS='windows'
RunOSId='win'
RunArch='x64'

# Create mono dotnet
mkdir -p $RunDir/artifacts/dotnet-mono
$RunDir/build.sh -subset libs.pretest -configuration release -ci -arch $RunArch -testscope innerloop /p:RuntimeArtifactsPath=$RunDir\artifacts\bin\mono\$RunOS.$RunArch.Release /p:RuntimeFlavor=mono
xcopy $RunDir\artifacts\bin\runtime\net8.0-$RunOS-Release-$RunArch\ $RunDir\artifacts\bin\testhost\net8.0-$RunOS-Release-$RunArch\shared\Microsoft.NETCore.App\8.0.0\ /e /y
xcopy $RunDir\artifacts\bin\testhost\net8.0-$RunOS-Release-$RunArch\ $RunDir\artifacts\dotnet-mono\ /e /y
xcopy $RunDir\artifacts\bin\coreclr\$RunOS.$RunArch.Release\corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun /y

# Create Core Root
$RunDir\src\tests\build.cmd release $RunArch generatelayoutonly /p:LibrariesConfiguration=Release

# Clone performance 
git clone --branch main --depth 1 --quiet https://github.com/dotnet/performance.git $RunDir\performance

# Use Interpreter
export MONO_ENV_OPTIONS="--interpreter"

# One line run:
python3 $RunDir\performance\scripts\benchmarks_ci.py --csproj $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Memory.Span&lt;Char&gt;*' --bdn-artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun.exe" 

# Individual Commands:
# Restore 
dotnet restore $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --packages $RunDir\performance\artifacts\packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Build
dotnet build $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore /p:NuGetPackageRoot=$RunDir\performance\artifacts\packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Run
dotnet run --project $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore --no-build -- --filter 'System.Memory.Span&lt;Char&gt;*' --anyCategories Libraries Runtime " --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun.exe --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages
```

</details>

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-ea11f0a1-9f2c-4802-aa32-c38cbdf2b8bcae1d1740f94421ea7/a72d7f7b-dab6-4551-9ab9-683c8b3fcbc2.zip?sv=2021-08-06&se=2023-11-18T08%3A10%3A34Z&sr=c&sp=rl&sig=xD2n4GUz%2BEWMOpfcr%2BdyfbtQqZcLQ4oYQSWrf1bU0Wk%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9f47ac36-f899-4dea-822c-46fbbf6cca6833bf870dd5944bd87/36189307-fb1f-4f26-ab90-c3cdbbf7a1a9.zip?sv=2021-08-06&se=2023-11-19T22%3A20%3A51Z&sr=c&sp=rl&sig=nHq0wsZiDhLbgHhuRj4Krjo%2FsWXHxR9DXx8GpxeObRE%3D>)
### System.Memory.Span&lt;Char&gt;.SequenceEqual(Size: 33)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Char&gt;.Reverse(Size: 33)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.Span&lt;Char&gt;.Reverse(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>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | TigerUbuntu
Baseline | [04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a](https://github.com/dotnet/runtime/commit/04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a)
Compare | [5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f](https://github.com/dotnet/runtime/commit/5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a...5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:false, MonoInterpreter:true, RunKind:micro_mono


### Regressions in System.Numerics.Tests.Perf_VectorConvert

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Narrow_ulong - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Numerics.Tests.Perf_VectorConvert.Narrow_ulong.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Numerics.Vectors/Perf_VectorConvert.cs#L75-#L76>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 55.14 μs | 68.40 μs | 1.24 | 0.11 | True | | |
|<ul><li>[Narrow_long - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Numerics.Tests.Perf_VectorConvert.Narrow_long.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Numerics.Vectors/Perf_VectorConvert.cs#L72-#L73>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 55.12 μs | 68.45 μs | 1.24 | 0.08 | True | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Numerics.Tests.Perf_VectorConvert_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Numerics.Tests.Perf_VectorConvert_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/10_24_2023/refs/heads/main_x64_ubuntu%2022.04_LLVM%3Dfalse_MonoAOT%3Dfalse_MonoInterpreter%3Dtrue_RunKind%3Dmicro_mono_Regression/System.Numerics.Tests.Perf_VectorConvert.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

<details>
   <summary>Repro Steps</summary>


#### Prerequisites (Build files either built locally or downloaded from payload above)
- Libraries build extracted to `runtime/artifacts` or build instructions: [Libraries README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/libraries/README.md) args: `-subset libs+libs.tests -rc release -configuration Release -arch $RunArch -framework net8.0`
- CoreCLR product build extracted to `runtime/artifacts/bin/coreclr/$RunOS.$RunArch.Release`, build instructions: [CoreCLR README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/coreclr/README.md) args: `-subset clr+libs -rc release -configuration Release -arch $RunArch -framework net8.0`
- Mono Runtime build extracted to `runtime/artifacts/bin/mono/$RunOS.$RunArch.Release`, build instructions: [MONO README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/mono/README.md) args: `-arch $RunArch -os $RunOS -s mono+libs+host+packs -c Release`
- Dotnet SDK installed for dotnet commands
- Running commands from the runtime folder

Linux
```cmd
# Set $RunDir to the runtime directory
RunDir=`pwd`

# Set the OS, arch, and OSId
RunOS='linux'
RunOSId='linux'
RunArch='x64'

# Create mono dotnet
mkdir -p $RunDir/artifacts/dotnet-mono
$RunDir/build.sh -subset libs.pretest -configuration release -ci -arch $RunArch -testscope innerloop /p:RuntimeArtifactsPath=$RunDir/artifacts/bin/mono/$RunOS.$RunArch.Release /p:RuntimeFlavor=mono
cp $RunDir/artifacts/bin/runtime/net8.0-$RunOS-Release-$RunArch/* $RunDir/artifacts/bin/testhost/net8.0-$RunOS-Release-$RunArch/shared/Microsoft.NETCore.App/8.0.0 -rf
cp $RunDir/artifacts/bin/testhost/net8.0-$RunOS-Release-$RunArch/* $RunDir/artifacts/dotnet-mono -r
cp $RunDir/artifacts/bin/coreclr/$RunOS.$RunArch.Release/corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun

# Create Core Root
$RunDir/src/tests/build.sh release $RunArch generatelayoutonly /p:LibrariesConfiguration=Release

# Clone performance 
git clone --branch main --depth 1 --quiet https://github.com/dotnet/performance.git $RunDir/performance

# Use Interpreter
export MONO_ENV_OPTIONS="--interpreter"

# One line run:
python3 $RunDir/performance/scripts/benchmarks_ci.py --csproj $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Numerics.Tests.Perf_VectorConvert*' --bdn-artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun" 

# Individual Commands:
# Restore 
dotnet restore $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --packages $RunDir/performance/artifacts/packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Build
dotnet build $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore /p:NuGetPackageRoot=$RunDir/performance/artifacts/packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Run
dotnet run --project $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore --no-build -- --filter 'System.Numerics.Tests.Perf_VectorConvert*' --anyCategories Libraries Runtime " --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir/artifacts/dotnet-mono/shared/Microsoft.NETCore.App/8.0.0/corerun --artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --packages $RunDir/performance/artifacts/packages
```

Windows
```cmd
# Set $RunDir to the runtime directory
$RunDir="FullPathHere"

# Set the OS, arch, and OSId
RunOS='windows'
RunOSId='win'
RunArch='x64'

# Create mono dotnet
mkdir -p $RunDir/artifacts/dotnet-mono
$RunDir/build.sh -subset libs.pretest -configuration release -ci -arch $RunArch -testscope innerloop /p:RuntimeArtifactsPath=$RunDir\artifacts\bin\mono\$RunOS.$RunArch.Release /p:RuntimeFlavor=mono
xcopy $RunDir\artifacts\bin\runtime\net8.0-$RunOS-Release-$RunArch\ $RunDir\artifacts\bin\testhost\net8.0-$RunOS-Release-$RunArch\shared\Microsoft.NETCore.App\8.0.0\ /e /y
xcopy $RunDir\artifacts\bin\testhost\net8.0-$RunOS-Release-$RunArch\ $RunDir\artifacts\dotnet-mono\ /e /y
xcopy $RunDir\artifacts\bin\coreclr\$RunOS.$RunArch.Release\corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun /y

# Create Core Root
$RunDir\src\tests\build.cmd release $RunArch generatelayoutonly /p:LibrariesConfiguration=Release

# Clone performance 
git clone --branch main --depth 1 --quiet https://github.com/dotnet/performance.git $RunDir\performance

# Use Interpreter
export MONO_ENV_OPTIONS="--interpreter"

# One line run:
python3 $RunDir\performance\scripts\benchmarks_ci.py --csproj $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Numerics.Tests.Perf_VectorConvert*' --bdn-artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun.exe" 

# Individual Commands:
# Restore 
dotnet restore $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --packages $RunDir\performance\artifacts\packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Build
dotnet build $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore /p:NuGetPackageRoot=$RunDir\performance\artifacts\packages /p:UseSharedCompilation=false /p:BuildInParallel=false /m:1

# Run
dotnet run --project $RunDir\performance\src\benchmarks\micro\MicroBenchmarks.csproj --configuration Release --framework net8.0 --no-restore --no-build -- --filter 'System.Numerics.Tests.Perf_VectorConvert*' --anyCategories Libraries Runtime " --category-exclusion-filter NoInterpreter NoMono --logBuildOutput --generateBinLog --corerun $RunDir\artifacts\dotnet-mono\shared\Microsoft.NETCore.App\8.0.0\corerun.exe --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages
```

</details>

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-ea11f0a1-9f2c-4802-aa32-c38cbdf2b8bcae1d1740f94421ea7/a72d7f7b-dab6-4551-9ab9-683c8b3fcbc2.zip?sv=2021-08-06&se=2023-11-18T08%3A10%3A34Z&sr=c&sp=rl&sig=xD2n4GUz%2BEWMOpfcr%2BdyfbtQqZcLQ4oYQSWrf1bU0Wk%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9f47ac36-f899-4dea-822c-46fbbf6cca6833bf870dd5944bd87/36189307-fb1f-4f26-ab90-c3cdbbf7a1a9.zip?sv=2021-08-06&se=2023-11-19T22%3A20%3A51Z&sr=c&sp=rl&sig=nHq0wsZiDhLbgHhuRj4Krjo%2FsWXHxR9DXx8GpxeObRE%3D>)
### System.Numerics.Tests.Perf_VectorConvert.Narrow_ulong

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Narrow_long

#### 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	04ede0dadfbf2f1082d3bd218cea6fe46bbbed4a
Compare	5f653ddd5d9bc0544fbf3ff712244e3f5a398a9f
Diff	Diff
Configs	CompilationMode:tiered, LLVM:false, MonoAOT:false, MonoInterpreter:true, RunKind:micro_mono

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
StartsWith - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	65.51 ns	78.01 ns	1.19	0.17	False
IndexOfAnyThreeValues - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	46.96 ns	57.79 ns	1.23	0.35	False
IndexOfAnyTwoValues - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	74.22 ns	80.40 ns	1.08	0.16	False
Reverse - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	71.13 ns	78.86 ns	1.11	0.24	False
Reverse - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	62.13 ns	72.81 ns	1.17	0.13	False
SequenceEqual - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	73.14 ns	77.65 ns	1.06	0.18	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
Equals_Chars - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	350.71 ns	375.01 ns	1.07	0.03	False
FromUtf16 - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	93.59 ns	106.49 ns	1.14	0.11	False
ToUpperInPlace_Chars - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	91.94 ns	103.39 ns	1.12	0.06	False
EqualsIgnoreCase_DifferentCase_Chars - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	2.46 μs	2.65 μs	1.08	0.06	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
SequenceEqual - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	86.96 ns	107.99 ns	1.24	0.14	False
Reverse - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	85.72 ns	93.38 ns	1.09	0.23	False
Reverse - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	56.44 ns	66.77 ns	1.18	0.24	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Narrow_ulong - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	55.14 μs	68.40 μs	1.24	0.11	True
Narrow_long - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	55.12 μs	68.45 μs	1.24	0.08	True

[Perf] Linux/x64: 50 Regressions on 10/19/2023 6:52:58 PM #23615

Description

performanceautofileropenedon Oct 24, 2023

Run Information

Regressions in System.Memory.Span<Byte>

Repro

Prerequisites (Build files either built locally or downloaded from payload above)

Payloads

System.Memory.Span<Byte>.StartsWith(Size: 33)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Byte>.IndexOfAnyThreeValues(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Byte>.IndexOfAnyTwoValues(Size: 33)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Byte>.Reverse(Size: 33)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Byte>.Reverse(Size: 4)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Byte>.SequenceEqual(Size: 33)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Text.Perf_Ascii

Repro

Prerequisites (Build files either built locally or downloaded from payload above)

Payloads

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

ETL Files

Histogram

JIT Disasms

System.Text.Perf_Ascii.FromUtf16(Size: 6)

ETL Files

Histogram

JIT Disasms

System.Text.Perf_Ascii.ToUpperInPlace_Chars(Size: 6)

ETL Files

Histogram

JIT Disasms

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

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Memory.Span<Char>

Repro

Prerequisites (Build files either built locally or downloaded from payload above)

Payloads

System.Memory.Span<Char>.SequenceEqual(Size: 33)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Char>.Reverse(Size: 33)

ETL Files

Histogram

JIT Disasms

System.Memory.Span<Char>.Reverse(Size: 4)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Numerics.Tests.Perf_VectorConvert

Repro

Prerequisites (Build files either built locally or downloaded from payload above)

Payloads

System.Numerics.Tests.Perf_VectorConvert.Narrow_ulong

ETL Files

performanceautofiler
openedon Oct 24, 2023