[Perf] Linux/x64: 6 Improvements on 4/9/2023 11:24:15 AM

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 18.04
Queue | TigerUbuntu
Baseline | [1411364699b5784040e86f76cb3db8200f6a2c8c](https://github.com/dotnet/runtime/commit/1411364699b5784040e86f76cb3db8200f6a2c8c)
Compare | [86b48d7c6f081c12dcc9c048fb53de1b78c9966f](https://github.com/dotnet/runtime/commit/86b48d7c6f081c12dcc9c048fb53de1b78c9966f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/1411364699b5784040e86f76cb3db8200f6a2c8c...86b48d7c6f081c12dcc9c048fb53de1b78c9966f)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:false, MonoInterpreter:true, RunKind:micro_mono


### Improvements in System.Tests.Perf_DateTime

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[ToString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Tests.Perf_DateTime.ToString(format%3a%20%22o%22).html>) | 574.51 ns | 500.98 ns | 0.87 | 0.06 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono_Improvement/System.Tests.Perf_DateTime_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono_Improvement/System.Tests.Perf_DateTime.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-bf470d94-acf1-4eac-a2d2-bbe5a0b14345daf2c444bd74ae780/817adaab-e45d-4039-b0b5-0607d31f0e8b.zip?sv=2021-08-06&se=2023-05-09T02%3A16%3A09Z&sr=c&sp=rl&sig=GrKe%2BEMmzZmLXJL%2FqcK9eTeOymBz1TpjH4bKYZAPaWY%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-ec4f5a9c-dd48-49ba-bd94-8752c3e06f577e5439716f94e3197/76a84ebb-0998-4eb2-b946-d6ad0952ff82.zip?sv=2021-08-06&se=2023-05-09T15%3A22%3A44Z&sr=c&sp=rl&sig=IsDv1OiJ5KZi6MIV4k312PcUDpEMpB3DXdNeGoQPWeA%3D>)

<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.Tests.Perf_DateTime*' --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.Tests.Perf_DateTime*' --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.Tests.Perf_DateTime*' --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.Tests.Perf_DateTime*' --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-bf470d94-acf1-4eac-a2d2-bbe5a0b14345daf2c444bd74ae780/817adaab-e45d-4039-b0b5-0607d31f0e8b.zip?sv=2021-08-06&se=2023-05-09T02%3A16%3A09Z&sr=c&sp=rl&sig=GrKe%2BEMmzZmLXJL%2FqcK9eTeOymBz1TpjH4bKYZAPaWY%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-ec4f5a9c-dd48-49ba-bd94-8752c3e06f577e5439716f94e3197/76a84ebb-0998-4eb2-b946-d6ad0952ff82.zip?sv=2021-08-06&se=2023-05-09T15%3A22%3A44Z&sr=c&sp=rl&sig=IsDv1OiJ5KZi6MIV4k312PcUDpEMpB3DXdNeGoQPWeA%3D>)
### Histogram

#### System.Tests.Perf_DateTime.ToString(format: "o")

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed: Marked as improvement because 500.9814115550243 < 537.4306089591145.
IsChangePoint: Marked as a change because one of 2/6/2023 11:23:26 AM, 3/17/2023 1:34:47 AM, 4/9/2023 4:09:45 AM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsImprovementStdDev: Marked as improvement because 27.24003808322338 (T) = (0 -507.59208286202556) / Math.Sqrt((141.37516152103748 / (299)) + (33.452276194488 / (7))) is greater than 1.9677981407170237 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (7) - 2, .975) and 0.10951427843451357 = (570.0170935584139 - 507.59208286202556) / 570.0170935584139 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```


### 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 18.04
Queue | TigerUbuntu
Baseline | [1411364699b5784040e86f76cb3db8200f6a2c8c](https://github.com/dotnet/runtime/commit/1411364699b5784040e86f76cb3db8200f6a2c8c)
Compare | [86b48d7c6f081c12dcc9c048fb53de1b78c9966f](https://github.com/dotnet/runtime/commit/86b48d7c6f081c12dcc9c048fb53de1b78c9966f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/1411364699b5784040e86f76cb3db8200f6a2c8c...86b48d7c6f081c12dcc9c048fb53de1b78c9966f)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:false, MonoInterpreter:true, RunKind:micro_mono


### Improvements in System.Tests.Perf_DateTimeOffset

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[ToString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Tests.Perf_DateTimeOffset.ToString(format%3a%20%22o%22).html>) | 718.45 ns | 668.20 ns | 0.93 | 0.04 | False | | |
[ToString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Tests.Perf_DateTimeOffset.ToString(value%3a%2012%2f30%2f2017%203%3a45%3a22%20AM%20-08%3a00).html>) | 6.76 μs | 3.27 μs | 0.48 | 0.01 | False | | |
[ToString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Tests.Perf_DateTimeOffset.ToString(format%3a%20null).html>) | 6.65 μs | 3.14 μs | 0.47 | 0.02 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono_Improvement/System.Tests.Perf_DateTimeOffset_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono_Improvement/System.Tests.Perf_DateTimeOffset_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono_Improvement/System.Tests.Perf_DateTimeOffset_3.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono_Improvement/System.Tests.Perf_DateTimeOffset.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-bf470d94-acf1-4eac-a2d2-bbe5a0b14345daf2c444bd74ae780/817adaab-e45d-4039-b0b5-0607d31f0e8b.zip?sv=2021-08-06&se=2023-05-09T02%3A16%3A09Z&sr=c&sp=rl&sig=GrKe%2BEMmzZmLXJL%2FqcK9eTeOymBz1TpjH4bKYZAPaWY%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-ec4f5a9c-dd48-49ba-bd94-8752c3e06f577e5439716f94e3197/76a84ebb-0998-4eb2-b946-d6ad0952ff82.zip?sv=2021-08-06&se=2023-05-09T15%3A22%3A44Z&sr=c&sp=rl&sig=IsDv1OiJ5KZi6MIV4k312PcUDpEMpB3DXdNeGoQPWeA%3D>)

<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.Tests.Perf_DateTimeOffset*' --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.Tests.Perf_DateTimeOffset*' --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.Tests.Perf_DateTimeOffset*' --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.Tests.Perf_DateTimeOffset*' --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-bf470d94-acf1-4eac-a2d2-bbe5a0b14345daf2c444bd74ae780/817adaab-e45d-4039-b0b5-0607d31f0e8b.zip?sv=2021-08-06&se=2023-05-09T02%3A16%3A09Z&sr=c&sp=rl&sig=GrKe%2BEMmzZmLXJL%2FqcK9eTeOymBz1TpjH4bKYZAPaWY%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-ec4f5a9c-dd48-49ba-bd94-8752c3e06f577e5439716f94e3197/76a84ebb-0998-4eb2-b946-d6ad0952ff82.zip?sv=2021-08-06&se=2023-05-09T15%3A22%3A44Z&sr=c&sp=rl&sig=IsDv1OiJ5KZi6MIV4k312PcUDpEMpB3DXdNeGoQPWeA%3D>)
### Histogram

#### System.Tests.Perf_DateTimeOffset.ToString(format: "o")

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed: Marked as improvement because 668.2006286902645 < 700.3542632144637.
IsChangePoint: Marked as a change because one of 2/6/2023 11:23:26 AM, 4/9/2023 4:09:45 AM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsImprovementStdDev: Marked as improvement because 16.66690630656819 (T) = (0 -658.7033248018569) / Math.Sqrt((170.10593450588536 / (299)) + (106.33929984611972 / (7))) is greater than 1.9677981407170237 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (7) - 2, .975) and 0.09128020474294476 = (724.8695673186313 - 658.7033248018569) / 724.8695673186313 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```
#### System.Tests.Perf_DateTimeOffset.ToString(value: 12/30/2017 3:45:22 AM -08:00)

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed: Marked as improvement because 3.265935177238155 < 6.512116617829568.
IsChangePoint: Marked as a change because one of 3/16/2023 9:46:36 PM, 4/9/2023 4:09:45 AM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsImprovementStdDev: Marked as improvement because 119.7974281910326 (T) = (0 -3244.732142875197) / Math.Sqrt((126692.26688870077 / (299)) + (4090.432846427625 / (6))) is greater than 1.967824097752068 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (6) - 2, .975) and 0.5510767084886579 = (7227.809748858215 - 3244.732142875197) / 7227.809748858215 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```
#### System.Tests.Perf_DateTimeOffset.ToString(format: null)

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed: Marked as improvement because 3.1417118877757537 < 6.4404888749857.
IsChangePoint: Marked as a change because one of 3/16/2023 9:46:36 PM, 4/9/2023 4:09:45 AM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsImprovementStdDev: Marked as improvement because 161.76988886108828 (T) = (0 -3138.928736857368) / Math.Sqrt((124425.19308461956 / (299)) + (1180.757848067173 / (6))) is greater than 1.967824097752068 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (6) - 2, .975) and 0.5606163878640226 = (7143.936756307502 - 3138.928736857368) / 7143.936756307502 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```


### 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 18.04
Queue | TigerUbuntu
Baseline | [1411364699b5784040e86f76cb3db8200f6a2c8c](https://github.com/dotnet/runtime/commit/1411364699b5784040e86f76cb3db8200f6a2c8c)
Compare | [86b48d7c6f081c12dcc9c048fb53de1b78c9966f](https://github.com/dotnet/runtime/commit/86b48d7c6f081c12dcc9c048fb53de1b78c9966f)
Diff | [Diff](https://github.com/dotnet/runtime/compare/1411364699b5784040e86f76cb3db8200f6a2c8c...86b48d7c6f081c12dcc9c048fb53de1b78c9966f)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:false, MonoInterpreter:true, RunKind:micro_mono


### Improvements in System.Text.Tests.Perf_StringBuilder

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Append_ValueTypes_Interpolated - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Text.Tests.Perf_StringBuilder.Append_ValueTypes_Interpolated.html>) | 123.02 μs | 93.33 μs | 0.76 | 0.01 | False | | |
[Append_ValueTypes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono/System.Text.Tests.Perf_StringBuilder.Append_ValueTypes.html>) | 71.56 μs | 49.97 μs | 0.70 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono_Improvement/System.Text.Tests.Perf_StringBuilder_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono_Improvement/System.Text.Tests.Perf_StringBuilder_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=true_RunKind=micro_mono_Improvement/System.Text.Tests.Perf_StringBuilder.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-bf470d94-acf1-4eac-a2d2-bbe5a0b14345daf2c444bd74ae780/817adaab-e45d-4039-b0b5-0607d31f0e8b.zip?sv=2021-08-06&se=2023-05-09T02%3A16%3A09Z&sr=c&sp=rl&sig=GrKe%2BEMmzZmLXJL%2FqcK9eTeOymBz1TpjH4bKYZAPaWY%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-ec4f5a9c-dd48-49ba-bd94-8752c3e06f577e5439716f94e3197/76a84ebb-0998-4eb2-b946-d6ad0952ff82.zip?sv=2021-08-06&se=2023-05-09T15%3A22%3A44Z&sr=c&sp=rl&sig=IsDv1OiJ5KZi6MIV4k312PcUDpEMpB3DXdNeGoQPWeA%3D>)

<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.Tests.Perf_StringBuilder*' --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.Tests.Perf_StringBuilder*' --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.Tests.Perf_StringBuilder*' --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.Tests.Perf_StringBuilder*' --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-bf470d94-acf1-4eac-a2d2-bbe5a0b14345daf2c444bd74ae780/817adaab-e45d-4039-b0b5-0607d31f0e8b.zip?sv=2021-08-06&se=2023-05-09T02%3A16%3A09Z&sr=c&sp=rl&sig=GrKe%2BEMmzZmLXJL%2FqcK9eTeOymBz1TpjH4bKYZAPaWY%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-ec4f5a9c-dd48-49ba-bd94-8752c3e06f577e5439716f94e3197/76a84ebb-0998-4eb2-b946-d6ad0952ff82.zip?sv=2021-08-06&se=2023-05-09T15%3A22%3A44Z&sr=c&sp=rl&sig=IsDv1OiJ5KZi6MIV4k312PcUDpEMpB3DXdNeGoQPWeA%3D>)
### Histogram

#### System.Text.Tests.Perf_StringBuilder.Append_ValueTypes_Interpolated

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed: Marked as improvement because 93.32991732843136 < 116.66570442919243.
IsChangePoint: Marked as a change because one of 2/9/2023 12:40:40 PM, 3/16/2023 9:46:36 PM, 4/9/2023 4:09:45 AM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsImprovementStdDev: Marked as improvement because 91.89578621610167 (T) = (0 -92701.92521001892) / Math.Sqrt((27263123.609828867 / (299)) + (412185.6874799728 / (7))) is greater than 1.9677981407170237 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (7) - 2, .975) and 0.2774635117510135 = (128300.68338095305 - 92701.92521001892) / 128300.68338095305 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```
#### System.Text.Tests.Perf_StringBuilder.Append_ValueTypes

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed: Marked as improvement because 49.970551929754286 < 68.10489051577574.
IsChangePoint: Marked as a change because one of 3/16/2023 9:46:36 PM, 4/9/2023 4:09:45 AM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsImprovementStdDev: Marked as improvement because 74.49346102164013 (T) = (0 -49650.861240348946) / Math.Sqrt((6001956.299676375 / (299)) + (625218.3578520821 / (7))) is greater than 1.9677981407170237 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (7) - 2, .975) and 0.3316524521554688 = (74288.98542453928 - 49650.861240348946) / 74288.98542453928 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```


### 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 18.04
Queue	TigerUbuntu
Baseline	1411364699b5784040e86f76cb3db8200f6a2c8c
Compare	86b48d7c6f081c12dcc9c048fb53de1b78c9966f
Diff	Diff
Configs	CompilationMode:tiered, LLVM:false, MonoAOT:false, MonoInterpreter:true, RunKind:micro_mono

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
ToString - Duration of single invocation	718.45 ns	668.20 ns	0.93	0.04	False
ToString - Duration of single invocation	6.76 μs	3.27 μs	0.48	0.01	False
ToString - Duration of single invocation	6.65 μs	3.14 μs	0.47	0.02	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Append_ValueTypes_Interpolated - Duration of single invocation	123.02 μs	93.33 μs	0.76	0.01	False
Append_ValueTypes - Duration of single invocation	71.56 μs	49.97 μs	0.70	0.01	False

[Perf] Linux/x64: 6 Improvements on 4/9/2023 11:24:15 AM #15728

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Improvements in System.Tests.Perf_DateTime

Repro

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System.Tests.Perf_DateTime.ToString(format: "o")

Description of detection logic

Docs

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Improvements in System.Tests.Perf_DateTimeOffset

Repro

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

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System.Tests.Perf_DateTimeOffset.ToString(format: "o")

Description of detection logic

System.Tests.Perf_DateTimeOffset.ToString(value: 12/30/2017 3:45:22 AM -08:00)

Description of detection logic

System.Tests.Perf_DateTimeOffset.ToString(format: null)

Description of detection logic

Docs

Run Information

Improvements in System.Text.Tests.Perf_StringBuilder

Repro

Payloads

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

Payloads

Histogram

System.Text.Tests.Perf_StringBuilder.Append_ValueTypes_Interpolated

Description of detection logic

System.Text.Tests.Perf_StringBuilder.Append_ValueTypes

Description of detection logic

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