[Perf] Linux/arm64: 22 Regressions on 4/8/2024 7:16:22 PM

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [230dc86e9d92fbf191bf3b45b3f1b656f83d4426](https://github.com/dotnet/runtime/commit/230dc86e9d92fbf191bf3b45b3f1b656f83d4426)
Compare | [404b286b23093cd93a985791934756f64a33483e](https://github.com/dotnet/runtime/commit/404b286b23093cd93a985791934756f64a33483e)
Diff | [Diff](https://github.com/dotnet/runtime/compare/230dc86e9d92fbf191bf3b45b3f1b656f83d4426...404b286b23093cd93a985791934756f64a33483e)
Configs | CompilationMode:tiered, LLVM:true, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.IO.Tests.StreamReaderReadToEndTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ReadToEnd - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange%3a%20%5b%20%20%200%2c%201024%5d).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.IO/StreamReaderReadToEndTests.cs#L30-#L37>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 115.22 ms | 136.81 ms | 1.19 | 0.32 | False | | |
|<ul><li>[ReadToEnd - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange%3a%20%5b%20%20%201%2c%20%20%20%201%5d).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.IO/StreamReaderReadToEndTests.cs#L30-#L37>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 110.46 ms | 143.46 ms | 1.30 | 0.37 | False | | |
|<ul><li>[ReadToEnd - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange%3a%20%5b%20129%2c%201024%5d).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.IO/StreamReaderReadToEndTests.cs#L30-#L37>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACpVUXW/TMBR9R+I/+C0JZG36wbRVCqIrBQotG2nEyzRNbnKbGMV2dO1szYT47dhpKWsnjfBi+R6fc+61c28WQFWFwEFo9eInuc8BgVxUrEgjKCUJQ+KkUgvQXayEZhycQ9YFUpHkDQ9hrbo50FR1OWXiiDjGJGcaEm2yESaI62xOh45PHIrcbLw9Owalv1IO1vOds6yVBt6ZXXYsrjpLjUB5ZLIA2jWWU5Fuj/ahO2cC5iAynUdUZDAi16TXP/dJL+gPb7y/hUWVmEixZlmFVDMp1LUzkbxkRRMtZArODQl/EUczQ0+dl88p5/Pviz90rOB58kIKOb6M/4s/ExqwRDDrTremhfqH0EBfmEh3As4SlLfcmD1SMQW81LX7RD2W2mtBm0k1L+5485Xb8D+rqcjMF2rDvcpkXJftqHmtWEKLK5RcWqSt8FO9QpZ+LOSKFuyhwdrIon7UNsN0UwKa2RFNYx+2+kSauQKMZbnbHY5NbGRLTXlJ3pKUarAj6PZNH58E/ZPeaRycjXpvRv2gMxicDweDs9dBMAoCm0JVnFNkD0AoZrecbtzG0Fbgk1ceWdVHGfz96Pm2k75VUIHxKVH+MGP7hByBqgodoqk6dR/dZIuP7wBpZpwGnk8aK2scfkAGIi3qPWIfqwlsyWjOAIm9Y5JT1OSe6Zy4yjweqHCv8ckmkUXFRXhcU73FVbgtwhA10wWEznvzdOZnU+9CKyGuUJ7FVFkwHdINKO83BprjuQ4FAAA=>)</li></ul> | 110.24 ms | 130.00 ms | 1.18 | 0.34 | False | | |
|<ul><li>[ReadToEnd - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange%3a%20%5b%20%20%200%2c%20%20%20%200%5d).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.IO/StreamReaderReadToEndTests.cs#L30-#L37>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 116.96 ms | 133.53 ms | 1.14 | 0.35 | False | | |
|<ul><li>[ReadToEnd - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange%3a%20%5b%20%20%201%2c%20%20%20%208%5d).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.IO/StreamReaderReadToEndTests.cs#L30-#L37>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACpVUXW/TMBR9R+I/3LckkHVZu5WpUhDdGDBo2cgiXqZp8pK7xCi2o2tnaybEb8dOS1k7aYQXy/f4nHOvP67nyHRDKFAa/eIn3JdICEcNr/IEawVxDF6ujESzS400XKC3yToiJrOy4xHe6t0SWa53BeNyizilrOQGM2OzAZfge4vxvheCx0jYSbBmp6jNVybQeb7zLlptUAxOzwYO14MLQ8hEYrMguTFVJzJfLq1Df8YlzlAWpkyYLHAClwCwF9oBDq+Cv4UljTxW8pYXDTHDldSX3rESNa+6aK5y9K4g/gWe4Zaeey+fU85m3+d/6NTg8+S5kmp6lv4X/1QapJrQjivdLav0P4QW+sJlvhIInpG6FtbskYprFLVp/SfqqTJBD9qp0rPqTnS33If/WZ/Iwt5QH+55odK27kctW80zVp2TEsohfYWf2hvi+cdK3bCKP3RYH1kyTPpmOFnUSLZ3ZPewN5/6sbJ9hZSqejXbbJvUyi4MEzW8hZwZdC3oD6Ph/k403Nkbp9HhZO9gMowGB+PR4Wj85nUUTaLIpdCNEIz4AwKj4lqwhd8ZugpCeBXATbuVIVy3Xuhe0rcGG7Q+Nakftm2fkBPUTWVislXn/qOdLPHpHRIrrNMoCKGzcsbxB+Io86pdI+6wusCVTHYNCdwes5KRgXtuSvC1PTzU8VoTwiJTVSNkvF1Tu8R1vCzCEg03Fcbee3t09rNpV6GTgC914DBdV9zEbIE6+A3ghVE/DgUAAA==>)</li></ul> | 115.80 ms | 130.20 ms | 1.12 | 0.37 | False | | |
|<ul><li>[ReadToEnd - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange%3a%20%5b%20%20%209%2c%20%20%2032%5d).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.IO/StreamReaderReadToEndTests.cs#L30-#L37>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 118.24 ms | 128.97 ms | 1.09 | 0.34 | False | | |
|<ul><li>[ReadToEnd - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange%3a%20%5b1025%2c%202048%5d).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.IO/StreamReaderReadToEndTests.cs#L30-#L37>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 114.53 ms | 129.65 ms | 1.13 | 0.35 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.IO.Tests.StreamReaderReadToEndTests_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.IO.Tests.StreamReaderReadToEndTests_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.IO.Tests.StreamReaderReadToEndTests_3.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.IO.Tests.StreamReaderReadToEndTests_4.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.IO.Tests.StreamReaderReadToEndTests_5.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.IO.Tests.StreamReaderReadToEndTests_6.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.IO.Tests.StreamReaderReadToEndTests_7.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.IO.Tests.StreamReaderReadToEndTests.html>)

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

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


#### Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))
- 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 $RunArch -framework net8.0`
- AOT MONO build extracted to `runtime/artifacts/bin/mono/$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 /p:CrossBuild=false /p:MonoLLVMUseCxx11Abi=false`
- 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 aot directory 
mkdir -p $RunDir/artifacts/bin/aot/sgen
mkdir -p $RunDir/artifacts/bin/aot/pack
cp -r $RunDir/artifacts/obj/mono/$RunOS.$RunArch.Release/mono/* $RunDir/artifacts/bin/aot/sgen
cp -r $RunDir/artifacts/bin/microsoft.netcore.app.runtime.$RunOS-$RunArch/Release/* $RunDir/artifacts/bin/aot/pack

# 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

# 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.IO.Tests.StreamReaderReadToEndTests*' --bdn-artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir/artifacts/bin/aot/sgen/mini/mono-sgen --customruntimepack $RunDir/artifacts/bin/aot/pack --aotcompilermode llvm --logBuildOutput --generateBinLog"

# 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.IO.Tests.StreamReaderReadToEndTests* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir/artifacts/bin/aot/sgen/mini/mono-sgen --customruntimepack $RunDir/artifacts/bin/aot/pack --aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --packages $RunDir/performance/artifacts/packages --buildTimeout 1200
```

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

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

# Create aot directory
mkdir $RunDir\artifacts\bin\aot\sgen
mkdir $RunDir\artifacts\bin\aot\pack
xcopy $RunDir\artifacts\obj\mono\$RunOS.$RunArch.Release\mono $RunDir\artifacts\bin\aot\sgen\ /e /y
xcopy $RunDir\artifacts\bin\microsoft.netcore.app.runtime.$RunOSId-$RunArch\Release $RunDir\artifacts\bin\aot\pack\ /e /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

# 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.IO.Tests.StreamReaderReadToEndTests*' --bdn-artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack --aotcompilermode llvm --logBuildOutput --generateBinLog"

# 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.IO.Tests.StreamReaderReadToEndTests* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack -aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages --buildTimeout 1200
```

</details>

<details>

### System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [   0, 1024])

#### ETL Files

#### Histogram

#### JIT Disasms

### System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [   1,    1])

#### ETL Files

#### Histogram

#### JIT Disasms

### System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [ 129, 1024])

#### ETL Files

#### Histogram

#### JIT Disasms

### System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [   0,    0])

#### ETL Files

#### Histogram

#### JIT Disasms

### System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [   1,    8])

#### ETL Files

#### Histogram

#### JIT Disasms

### System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [   9,   32])

#### ETL Files

#### Histogram

#### JIT Disasms

### System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [1025, 2048])

#### 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 | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [230dc86e9d92fbf191bf3b45b3f1b656f83d4426](https://github.com/dotnet/runtime/commit/230dc86e9d92fbf191bf3b45b3f1b656f83d4426)
Compare | [404b286b23093cd93a985791934756f64a33483e](https://github.com/dotnet/runtime/commit/404b286b23093cd93a985791934756f64a33483e)
Diff | [Diff](https://github.com/dotnet/runtime/compare/230dc86e9d92fbf191bf3b45b3f1b656f83d4426...404b286b23093cd93a985791934756f64a33483e)
Configs | CompilationMode:tiered, LLVM:true, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Text.Tests.Perf_Encoding

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[GetChars - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Text.Tests.Perf_Encoding.GetChars(size%3a%2016%2c%20encName%3a%20%22ascii%22).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Encoding.cs#L41-#L43>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 56.66 ns | 64.08 ns | 1.13 | 0.33 | False | | |
|<ul><li>[GetString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Text.Tests.Perf_Encoding.GetString(size%3a%20512%2c%20encName%3a%20%22ascii%22).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Encoding.cs#L37-#L39>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 370.24 ns | 597.61 ns | 1.61 | 0.44 | True | | |
|<ul><li>[GetChars - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Text.Tests.Perf_Encoding.GetChars(size%3a%20512%2c%20encName%3a%20%22ascii%22).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Encoding.cs#L41-#L43>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 387.21 ns | 555.99 ns | 1.44 | 0.40 | True | | |
|<ul><li>[GetChars - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Text.Tests.Perf_Encoding.GetChars(size%3a%2016%2c%20encName%3a%20%22utf-8%22).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Encoding.cs#L41-#L43>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 69.88 ns | 75.98 ns | 1.09 | 0.22 | False | | |
|<ul><li>[GetChars - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Text.Tests.Perf_Encoding.GetChars(size%3a%20512%2c%20encName%3a%20%22utf-8%22).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Encoding.cs#L41-#L43>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 480.19 ns | 682.79 ns | 1.42 | 0.27 | True | | |
|<ul><li>[GetString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Text.Tests.Perf_Encoding.GetString(size%3a%20512%2c%20encName%3a%20%22utf-8%22).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Encoding.cs#L37-#L39>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 474.24 ns | 679.62 ns | 1.43 | 0.35 | True | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Text.Tests.Perf_Encoding_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Text.Tests.Perf_Encoding_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Text.Tests.Perf_Encoding_3.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Text.Tests.Perf_Encoding_4.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Text.Tests.Perf_Encoding_5.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Text.Tests.Perf_Encoding_6.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Text.Tests.Perf_Encoding.html>)

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

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


#### Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))
- 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 $RunArch -framework net8.0`
- AOT MONO build extracted to `runtime/artifacts/bin/mono/$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 /p:CrossBuild=false /p:MonoLLVMUseCxx11Abi=false`
- 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 aot directory 
mkdir -p $RunDir/artifacts/bin/aot/sgen
mkdir -p $RunDir/artifacts/bin/aot/pack
cp -r $RunDir/artifacts/obj/mono/$RunOS.$RunArch.Release/mono/* $RunDir/artifacts/bin/aot/sgen
cp -r $RunDir/artifacts/bin/microsoft.netcore.app.runtime.$RunOS-$RunArch/Release/* $RunDir/artifacts/bin/aot/pack

# 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

# 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.Tests.Perf_Encoding*' --bdn-artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir/artifacts/bin/aot/sgen/mini/mono-sgen --customruntimepack $RunDir/artifacts/bin/aot/pack --aotcompilermode llvm --logBuildOutput --generateBinLog"

# 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.Tests.Perf_Encoding* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir/artifacts/bin/aot/sgen/mini/mono-sgen --customruntimepack $RunDir/artifacts/bin/aot/pack --aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --packages $RunDir/performance/artifacts/packages --buildTimeout 1200
```

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

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

# Create aot directory
mkdir $RunDir\artifacts\bin\aot\sgen
mkdir $RunDir\artifacts\bin\aot\pack
xcopy $RunDir\artifacts\obj\mono\$RunOS.$RunArch.Release\mono $RunDir\artifacts\bin\aot\sgen\ /e /y
xcopy $RunDir\artifacts\bin\microsoft.netcore.app.runtime.$RunOSId-$RunArch\Release $RunDir\artifacts\bin\aot\pack\ /e /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

# 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.Tests.Perf_Encoding*' --bdn-artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack --aotcompilermode llvm --logBuildOutput --generateBinLog"

# 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.Tests.Perf_Encoding* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack -aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages --buildTimeout 1200
```

</details>

<details>

### System.Text.Tests.Perf_Encoding.GetChars(size: 16, encName: "ascii")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Tests.Perf_Encoding.GetString(size: 512, encName: "ascii")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Tests.Perf_Encoding.GetChars(size: 512, encName: "ascii")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Tests.Perf_Encoding.GetChars(size: 16, encName: "utf-8")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Tests.Perf_Encoding.GetChars(size: 512, encName: "utf-8")

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.Tests.Perf_Encoding.GetString(size: 512, encName: "utf-8")

#### 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 | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [230dc86e9d92fbf191bf3b45b3f1b656f83d4426](https://github.com/dotnet/runtime/commit/230dc86e9d92fbf191bf3b45b3f1b656f83d4426)
Compare | [404b286b23093cd93a985791934756f64a33483e](https://github.com/dotnet/runtime/commit/404b286b23093cd93a985791934756f64a33483e)
Diff | [Diff](https://github.com/dotnet/runtime/compare/230dc86e9d92fbf191bf3b45b3f1b656f83d4426...404b286b23093cd93a985791934756f64a33483e)
Configs | CompilationMode:tiered, LLVM:true, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.IO.Tests.BinaryReaderTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ReadLargeString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.IO.Tests.BinaryReaderTests.ReadLargeString.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.IO/BinaryReaderTests.cs#L94-#L99>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.24 μs | 1.42 μs | 1.15 | 0.51 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.IO.Tests.BinaryReaderTests_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.IO.Tests.BinaryReaderTests.html>)

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

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


#### Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))
- 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 $RunArch -framework net8.0`
- AOT MONO build extracted to `runtime/artifacts/bin/mono/$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 /p:CrossBuild=false /p:MonoLLVMUseCxx11Abi=false`
- 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 aot directory 
mkdir -p $RunDir/artifacts/bin/aot/sgen
mkdir -p $RunDir/artifacts/bin/aot/pack
cp -r $RunDir/artifacts/obj/mono/$RunOS.$RunArch.Release/mono/* $RunDir/artifacts/bin/aot/sgen
cp -r $RunDir/artifacts/bin/microsoft.netcore.app.runtime.$RunOS-$RunArch/Release/* $RunDir/artifacts/bin/aot/pack

# 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

# 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.IO.Tests.BinaryReaderTests*' --bdn-artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir/artifacts/bin/aot/sgen/mini/mono-sgen --customruntimepack $RunDir/artifacts/bin/aot/pack --aotcompilermode llvm --logBuildOutput --generateBinLog"

# 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.IO.Tests.BinaryReaderTests* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir/artifacts/bin/aot/sgen/mini/mono-sgen --customruntimepack $RunDir/artifacts/bin/aot/pack --aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --packages $RunDir/performance/artifacts/packages --buildTimeout 1200
```

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

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

# Create aot directory
mkdir $RunDir\artifacts\bin\aot\sgen
mkdir $RunDir\artifacts\bin\aot\pack
xcopy $RunDir\artifacts\obj\mono\$RunOS.$RunArch.Release\mono $RunDir\artifacts\bin\aot\sgen\ /e /y
xcopy $RunDir\artifacts\bin\microsoft.netcore.app.runtime.$RunOSId-$RunArch\Release $RunDir\artifacts\bin\aot\pack\ /e /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

# 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.IO.Tests.BinaryReaderTests*' --bdn-artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack --aotcompilermode llvm --logBuildOutput --generateBinLog"

# 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.IO.Tests.BinaryReaderTests* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack -aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages --buildTimeout 1200
```

</details>

<details>

### System.IO.Tests.BinaryReaderTests.ReadLargeString

#### 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 | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [9b57a265c7efd3732b035bade005561a04767128](https://github.com/dotnet/runtime/commit/9b57a265c7efd3732b035bade005561a04767128)
Compare | [404b286b23093cd93a985791934756f64a33483e](https://github.com/dotnet/runtime/commit/404b286b23093cd93a985791934756f64a33483e)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9b57a265c7efd3732b035bade005561a04767128...404b286b23093cd93a985791934756f64a33483e)
Configs | CompilationMode:tiered, LLVM:true, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Text.Json.Tests.Perf_Get

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[GetString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Text.Json.Tests.Perf_Get.GetString.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Json/Utf8JsonReader/Perf.Get.cs#L248-#L260>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 13.49 μs | 16.54 μs | 1.23 | 0.25 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Text.Json.Tests.Perf_Get_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_16_2024/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Text.Json.Tests.Perf_Get.html>)

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

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


#### Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))
- 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 $RunArch -framework net8.0`
- AOT MONO build extracted to `runtime/artifacts/bin/mono/$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 /p:CrossBuild=false /p:MonoLLVMUseCxx11Abi=false`
- 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 aot directory 
mkdir -p $RunDir/artifacts/bin/aot/sgen
mkdir -p $RunDir/artifacts/bin/aot/pack
cp -r $RunDir/artifacts/obj/mono/$RunOS.$RunArch.Release/mono/* $RunDir/artifacts/bin/aot/sgen
cp -r $RunDir/artifacts/bin/microsoft.netcore.app.runtime.$RunOS-$RunArch/Release/* $RunDir/artifacts/bin/aot/pack

# 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

# 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.Json.Tests.Perf_Get*' --bdn-artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir/artifacts/bin/aot/sgen/mini/mono-sgen --customruntimepack $RunDir/artifacts/bin/aot/pack --aotcompilermode llvm --logBuildOutput --generateBinLog"

# 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.Json.Tests.Perf_Get* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir/artifacts/bin/aot/sgen/mini/mono-sgen --customruntimepack $RunDir/artifacts/bin/aot/pack --aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir/artifacts/BenchmarkDotNet.Artifacts --packages $RunDir/performance/artifacts/packages --buildTimeout 1200
```

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

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

# Create aot directory
mkdir $RunDir\artifacts\bin\aot\sgen
mkdir $RunDir\artifacts\bin\aot\pack
xcopy $RunDir\artifacts\obj\mono\$RunOS.$RunArch.Release\mono $RunDir\artifacts\bin\aot\sgen\ /e /y
xcopy $RunDir\artifacts\bin\microsoft.netcore.app.runtime.$RunOSId-$RunArch\Release $RunDir\artifacts\bin\aot\pack\ /e /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

# 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.Json.Tests.Perf_Get*' --bdn-artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --bdn-arguments="--anyCategories Libraries Runtime  --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack --aotcompilermode llvm --logBuildOutput --generateBinLog"

# 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.Json.Tests.Perf_Get* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack -aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages --buildTimeout 1200
```

</details>

<details>

### System.Text.Json.Tests.Perf_Get.GetString

#### 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	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	230dc86e9d92fbf191bf3b45b3f1b656f83d4426
Compare	404b286b23093cd93a985791934756f64a33483e
Diff	Diff
Configs	CompilationMode:tiered, LLVM:true, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
ReadToEnd - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	115.22 ms	136.81 ms	1.19	0.32	False
ReadToEnd - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	110.46 ms	143.46 ms	1.30	0.37	False
ReadToEnd - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	110.24 ms	130.00 ms	1.18	0.34	False
ReadToEnd - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	116.96 ms	133.53 ms	1.14	0.35	False
ReadToEnd - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	115.80 ms	130.20 ms	1.12	0.37	False
ReadToEnd - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	118.24 ms	128.97 ms	1.09	0.34	False
ReadToEnd - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	114.53 ms	129.65 ms	1.13	0.35	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
GetChars - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	56.66 ns	64.08 ns	1.13	0.33	False
GetString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	370.24 ns	597.61 ns	1.61	0.44	True
GetChars - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	387.21 ns	555.99 ns	1.44	0.40	True
GetChars - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	69.88 ns	75.98 ns	1.09	0.22	False
GetChars - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	480.19 ns	682.79 ns	1.42	0.27	True
GetString - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	474.24 ns	679.62 ns	1.43	0.35	True

[Perf] Linux/arm64: 22 Regressions on 4/8/2024 7:16:22 PM #101127

Description

Run Information

Regressions in System.IO.Tests.StreamReaderReadToEndTests

Repro

Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))

System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [ 0, 1024])

ETL Files

Histogram

JIT Disasms

System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [ 1, 1])

ETL Files

Histogram

JIT Disasms

System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [ 129, 1024])

ETL Files

Histogram

JIT Disasms

System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [ 0, 0])

ETL Files

Histogram

JIT Disasms

System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [ 1, 8])

ETL Files

Histogram

JIT Disasms

System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [ 9, 32])

ETL Files

Histogram

JIT Disasms

System.IO.Tests.StreamReaderReadToEndTests.ReadToEnd(LineLengthRange: [1025, 2048])

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Text.Tests.Perf_Encoding

Repro

Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))

System.Text.Tests.Perf_Encoding.GetChars(size: 16, encName: "ascii")

ETL Files

Histogram

JIT Disasms

System.Text.Tests.Perf_Encoding.GetString(size: 512, encName: "ascii")

ETL Files

Histogram

JIT Disasms

System.Text.Tests.Perf_Encoding.GetChars(size: 512, encName: "ascii")

ETL Files

Histogram

JIT Disasms

System.Text.Tests.Perf_Encoding.GetChars(size: 16, encName: "utf-8")

ETL Files

Histogram

JIT Disasms

System.Text.Tests.Perf_Encoding.GetChars(size: 512, encName: "utf-8")

ETL Files

Histogram

JIT Disasms

System.Text.Tests.Perf_Encoding.GetString(size: 512, encName: "utf-8")

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.IO.Tests.BinaryReaderTests

Repro

Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))

System.IO.Tests.BinaryReaderTests.ReadLargeString

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Text.Json.Tests.Perf_Get

Repro

Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))

System.Text.Json.Tests.Perf_Get.GetString

ETL Files

Histogram