[Perf] Linux/x64: 9 Regressions on 4/2/2023 3:55:31 PM

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 18.04
Queue | TigerUbuntu
Baseline | [e65ebc920e766c1644e621875c20e4b1c6875a83](https://github.com/dotnet/runtime/commit/e65ebc920e766c1644e621875c20e4b1c6875a83)
Compare | [8ffad5201e02ec8657065aabc543135903767535](https://github.com/dotnet/runtime/commit/8ffad5201e02ec8657065aabc543135903767535)
Diff | [Diff](https://github.com/dotnet/runtime/compare/e65ebc920e766c1644e621875c20e4b1c6875a83...8ffad5201e02ec8657065aabc543135903767535)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Collections.IterateForEach&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Array - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.IterateForEach(String).Array(Size%3a%20512).html>) | 294.83 ns | 459.45 ns | 1.56 | 0.03 | False | | |
[ReadOnlySpan - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.IterateForEach(String).ReadOnlySpan(Size%3a%20512).html>) | 458.22 ns | 682.39 ns | 1.49 | 0.02 | False | | |
[ImmutableArray - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.IterateForEach(String).ImmutableArray(Size%3a%20512).html>) | 1.84 μs | 2.04 μs | 1.11 | 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=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Collections.IterateForEach(String)_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=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Collections.IterateForEach(String)_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=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Collections.IterateForEach(String)_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=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Collections.IterateForEach(String).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-494b5d1b-00a2-49db-8c42-790c507906872f83b2cbfae42fea6/660d2407-c50a-4d83-8dc5-f0cb29898b0a.zip?sv=2021-08-06&se=2023-05-01T20%3A16%3A44Z&sr=c&sp=rl&sig=EdW0T4nVT03%2Bl4O1ieytAJcgmdZU4q4lx%2Ff5c64yS1k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ddda35b-f258-486d-9a92-e509f3b614344ab77d31f814e3d98/c8534ec3-9e95-4840-aaa2-a14ff5860ea1.zip?sv=2021-08-06&se=2023-05-02T19%3A27%3A06Z&sr=c&sp=rl&sig=E22sVGZ7ZAfoY50SZetYBMgnlN74HZTddVDOxJv7uYw%3D>)

<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.Collections.IterateForEach&lt;String&gt;*' --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.Collections.IterateForEach&lt;String&gt;* --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.Collections.IterateForEach&lt;String&gt;*' --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.Collections.IterateForEach&lt;String&gt;* --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>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-494b5d1b-00a2-49db-8c42-790c507906872f83b2cbfae42fea6/660d2407-c50a-4d83-8dc5-f0cb29898b0a.zip?sv=2021-08-06&se=2023-05-01T20%3A16%3A44Z&sr=c&sp=rl&sig=EdW0T4nVT03%2Bl4O1ieytAJcgmdZU4q4lx%2Ff5c64yS1k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ddda35b-f258-486d-9a92-e509f3b614344ab77d31f814e3d98/c8534ec3-9e95-4840-aaa2-a14ff5860ea1.zip?sv=2021-08-06&se=2023-05-02T19%3A27%3A06Z&sr=c&sp=rl&sig=E22sVGZ7ZAfoY50SZetYBMgnlN74HZTddVDOxJv7uYw%3D>)
### Histogram

#### System.Collections.IterateForEach&lt;String&gt;.Array(Size: 512)

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 459.45021886441475 > 309.62780722631845.
IsChangePoint: Marked as a change because one of 2/8/2023 7:09:09 PM, 3/29/2023 11:36:35 PM, 4/1/2023 8:54:51 PM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsRegressionStdDev: Marked as regression because -19.06789353288595 (T) = (0 -459.4500429430693) / Math.Sqrt((1344.8153175083557 / (20)) + (0.22874177682872537 / (43))) is less than -1.9996235849941724 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (20) + (43) - 2, .025) and -0.5159053141051585 = (303.08624072228645 - 459.4500429430693) / 303.08624072228645 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```
#### System.Collections.IterateForEach&lt;String&gt;.ReadOnlySpan(Size: 512)

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 682.3865205189883 > 481.68507801858306.
IsChangePoint: Marked as a change because one of 2/8/2023 7:09:09 PM, 2/12/2023 11:53:55 PM, 2/15/2023 12:21:17 PM, 3/8/2023 9:36:36 PM, 3/13/2023 12:04:12 PM, 3/29/2023 11:36:35 PM, 4/1/2023 8:54:51 PM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsRegressionStdDev: Marked as regression because -17.948827998215304 (T) = (0 -682.4867275587385) / Math.Sqrt((2645.0067676248414 / (19)) + (0.3347255201731886 / (43))) is less than -2.0002978220134566 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (43) - 2, .025) and -0.4499190425296569 = (470.7067826131946 - 682.4867275587385) / 470.7067826131946 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```
#### System.Collections.IterateForEach&lt;String&gt;.ImmutableArray(Size: 512)

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 2.0380109147795653 > 1.89996990954867.
IsChangePoint: Marked as a change because one of 2/24/2023 8:06:06 PM, 3/16/2023 8:14:39 PM, 3/29/2023 11:36:35 PM, 4/3/2023 12:37:39 PM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsRegressionStdDev: Marked as regression because -21.365566389024902 (T) = (0 -2034.7000849652297) / Math.Sqrt((3539.9101817291325 / (25)) + (3.932960869815101 / (37))) is less than -2.0002978220134566 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (25) + (37) - 2, .025) and -0.1428545346794921 = (1780.3666374179907 - 2034.7000849652297) / 1780.3666374179907 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
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 | [e65ebc920e766c1644e621875c20e4b1c6875a83](https://github.com/dotnet/runtime/commit/e65ebc920e766c1644e621875c20e4b1c6875a83)
Compare | [8ffad5201e02ec8657065aabc543135903767535](https://github.com/dotnet/runtime/commit/8ffad5201e02ec8657065aabc543135903767535)
Diff | [Diff](https://github.com/dotnet/runtime/compare/e65ebc920e766c1644e621875c20e4b1c6875a83...8ffad5201e02ec8657065aabc543135903767535)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Collections.IndexerSet&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Array - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.IndexerSet(String).Array(Size%3a%20512).html>) | 1.39 μs | 1.73 μs | 1.24 | 0.04 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Collections.IndexerSet(String)_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=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Collections.IndexerSet(String).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-494b5d1b-00a2-49db-8c42-790c507906872f83b2cbfae42fea6/660d2407-c50a-4d83-8dc5-f0cb29898b0a.zip?sv=2021-08-06&se=2023-05-01T20%3A16%3A44Z&sr=c&sp=rl&sig=EdW0T4nVT03%2Bl4O1ieytAJcgmdZU4q4lx%2Ff5c64yS1k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ddda35b-f258-486d-9a92-e509f3b614344ab77d31f814e3d98/c8534ec3-9e95-4840-aaa2-a14ff5860ea1.zip?sv=2021-08-06&se=2023-05-02T19%3A27%3A06Z&sr=c&sp=rl&sig=E22sVGZ7ZAfoY50SZetYBMgnlN74HZTddVDOxJv7uYw%3D>)

<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.Collections.IndexerSet&lt;String&gt;*' --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.Collections.IndexerSet&lt;String&gt;* --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.Collections.IndexerSet&lt;String&gt;*' --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.Collections.IndexerSet&lt;String&gt;* --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>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-494b5d1b-00a2-49db-8c42-790c507906872f83b2cbfae42fea6/660d2407-c50a-4d83-8dc5-f0cb29898b0a.zip?sv=2021-08-06&se=2023-05-01T20%3A16%3A44Z&sr=c&sp=rl&sig=EdW0T4nVT03%2Bl4O1ieytAJcgmdZU4q4lx%2Ff5c64yS1k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ddda35b-f258-486d-9a92-e509f3b614344ab77d31f814e3d98/c8534ec3-9e95-4840-aaa2-a14ff5860ea1.zip?sv=2021-08-06&se=2023-05-02T19%3A27%3A06Z&sr=c&sp=rl&sig=E22sVGZ7ZAfoY50SZetYBMgnlN74HZTddVDOxJv7uYw%3D>)
### Histogram

#### System.Collections.IndexerSet&lt;String&gt;.Array(Size: 512)

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 1.7320189183349974 > 1.4630947536141474.
IsChangePoint: Marked as a change because one of 1/27/2023 11:43:56 PM, 2/2/2023 8:18:56 AM, 2/8/2023 7:09:09 PM, 2/14/2023 11:21:41 AM, 3/29/2023 11:36:35 PM, 4/1/2023 8:54:51 PM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsRegressionStdDev: Marked as regression because -23.547202601819603 (T) = (0 -1697.8148568335691) / Math.Sqrt((2818.087456984056 / (20)) + (541.728564231992 / (43))) is less than -1.9996235849941724 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (20) + (43) - 2, .025) and -0.20748618605164532 = (1406.0739381087644 - 1697.8148568335691) / 1406.0739381087644 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
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 | [e65ebc920e766c1644e621875c20e4b1c6875a83](https://github.com/dotnet/runtime/commit/e65ebc920e766c1644e621875c20e4b1c6875a83)
Compare | [8ffad5201e02ec8657065aabc543135903767535](https://github.com/dotnet/runtime/commit/8ffad5201e02ec8657065aabc543135903767535)
Diff | [Diff](https://github.com/dotnet/runtime/compare/e65ebc920e766c1644e621875c20e4b1c6875a83...8ffad5201e02ec8657065aabc543135903767535)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Diagnostics.Perf_Activity

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[EnumerateActivityEventsLarge - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Diagnostics.Perf_Activity.EnumerateActivityEventsLarge.html>) | 6.77 μs | 7.25 μs | 1.07 | 0.18 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Diagnostics.Perf_Activity_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=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Diagnostics.Perf_Activity.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-494b5d1b-00a2-49db-8c42-790c507906872f83b2cbfae42fea6/660d2407-c50a-4d83-8dc5-f0cb29898b0a.zip?sv=2021-08-06&se=2023-05-01T20%3A16%3A44Z&sr=c&sp=rl&sig=EdW0T4nVT03%2Bl4O1ieytAJcgmdZU4q4lx%2Ff5c64yS1k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ddda35b-f258-486d-9a92-e509f3b614344ab77d31f814e3d98/c8534ec3-9e95-4840-aaa2-a14ff5860ea1.zip?sv=2021-08-06&se=2023-05-02T19%3A27%3A06Z&sr=c&sp=rl&sig=E22sVGZ7ZAfoY50SZetYBMgnlN74HZTddVDOxJv7uYw%3D>)

<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.Diagnostics.Perf_Activity*' --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.Diagnostics.Perf_Activity* --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.Diagnostics.Perf_Activity*' --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.Diagnostics.Perf_Activity* --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>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-494b5d1b-00a2-49db-8c42-790c507906872f83b2cbfae42fea6/660d2407-c50a-4d83-8dc5-f0cb29898b0a.zip?sv=2021-08-06&se=2023-05-01T20%3A16%3A44Z&sr=c&sp=rl&sig=EdW0T4nVT03%2Bl4O1ieytAJcgmdZU4q4lx%2Ff5c64yS1k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ddda35b-f258-486d-9a92-e509f3b614344ab77d31f814e3d98/c8534ec3-9e95-4840-aaa2-a14ff5860ea1.zip?sv=2021-08-06&se=2023-05-02T19%3A27%3A06Z&sr=c&sp=rl&sig=E22sVGZ7ZAfoY50SZetYBMgnlN74HZTddVDOxJv7uYw%3D>)
### Histogram

#### System.Diagnostics.Perf_Activity.EnumerateActivityEventsLarge

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 7.25085193749034 > 7.074097714577167.
IsChangePoint: Marked as a change because one of 2/15/2023 12:21:17 PM, 3/29/2023 11:36:35 PM, 4/1/2023 8:54:51 PM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsRegressionStdDev: Marked as regression because -6.073092204079772 (T) = (0 -7647.017992919014) / Math.Sqrt((38161.52856178065 / (19)) + (854924.5281013531 / (43))) is less than -2.0002978220134566 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (43) - 2, .025) and -0.13314705090921594 = (6748.478043324731 - 7647.017992919014) / 6748.478043324731 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
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 | [e65ebc920e766c1644e621875c20e4b1c6875a83](https://github.com/dotnet/runtime/commit/e65ebc920e766c1644e621875c20e4b1c6875a83)
Compare | [8ffad5201e02ec8657065aabc543135903767535](https://github.com/dotnet/runtime/commit/8ffad5201e02ec8657065aabc543135903767535)
Diff | [Diff](https://github.com/dotnet/runtime/compare/e65ebc920e766c1644e621875c20e4b1c6875a83...8ffad5201e02ec8657065aabc543135903767535)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Memory.ReadOnlySpan

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Trim - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Memory.ReadOnlySpan.Trim(input%3a%20%22%20abcdefg%20%22).html>) | 91.51 ns | 111.15 ns | 1.21 | 0.00 | True | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Memory.ReadOnlySpan_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=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Memory.ReadOnlySpan.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-494b5d1b-00a2-49db-8c42-790c507906872f83b2cbfae42fea6/660d2407-c50a-4d83-8dc5-f0cb29898b0a.zip?sv=2021-08-06&se=2023-05-01T20%3A16%3A44Z&sr=c&sp=rl&sig=EdW0T4nVT03%2Bl4O1ieytAJcgmdZU4q4lx%2Ff5c64yS1k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ddda35b-f258-486d-9a92-e509f3b614344ab77d31f814e3d98/c8534ec3-9e95-4840-aaa2-a14ff5860ea1.zip?sv=2021-08-06&se=2023-05-02T19%3A27%3A06Z&sr=c&sp=rl&sig=E22sVGZ7ZAfoY50SZetYBMgnlN74HZTddVDOxJv7uYw%3D>)

<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.Memory.ReadOnlySpan*' --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.Memory.ReadOnlySpan* --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.Memory.ReadOnlySpan*' --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.Memory.ReadOnlySpan* --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>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-494b5d1b-00a2-49db-8c42-790c507906872f83b2cbfae42fea6/660d2407-c50a-4d83-8dc5-f0cb29898b0a.zip?sv=2021-08-06&se=2023-05-01T20%3A16%3A44Z&sr=c&sp=rl&sig=EdW0T4nVT03%2Bl4O1ieytAJcgmdZU4q4lx%2Ff5c64yS1k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ddda35b-f258-486d-9a92-e509f3b614344ab77d31f814e3d98/c8534ec3-9e95-4840-aaa2-a14ff5860ea1.zip?sv=2021-08-06&se=2023-05-02T19%3A27%3A06Z&sr=c&sp=rl&sig=E22sVGZ7ZAfoY50SZetYBMgnlN74HZTddVDOxJv7uYw%3D>)
### Histogram

#### System.Memory.ReadOnlySpan.Trim(input: " abcdefg ")

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 111.15126815000538 > 95.8138116693617.
IsChangePoint: Marked as a change because one of 4/1/2023 8:54:51 PM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsRegressionStdDev: Marked as regression because -133.0773826577836 (T) = (0 -112.08759021083503) / Math.Sqrt((0.2922129759137985 / (20)) + (0.4428749180343254 / (43))) is less than -1.9996235849941724 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (20) + (43) - 2, .025) and -0.23059461645417345 = (91.08408952235092 - 112.08759021083503) / 91.08408952235092 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked as 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 | [e65ebc920e766c1644e621875c20e4b1c6875a83](https://github.com/dotnet/runtime/commit/e65ebc920e766c1644e621875c20e4b1c6875a83)
Compare | [8ffad5201e02ec8657065aabc543135903767535](https://github.com/dotnet/runtime/commit/8ffad5201e02ec8657065aabc543135903767535)
Diff | [Diff](https://github.com/dotnet/runtime/compare/e65ebc920e766c1644e621875c20e4b1c6875a83...8ffad5201e02ec8657065aabc543135903767535)
Configs | CompilationMode:tiered, LLVM:false, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Tests.Perf_Enum

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[TryParseGeneric_Flags - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Tests.Perf_Enum.TryParseGeneric_Flags(text%3a%20%22Red%2c%20Orange%2c%20Yellow%2c%20Green%2c%20Blue%22).html>) | 787.68 ns | 905.89 ns | 1.15 | 0.02 | True | | |
[Parse_Flags - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Tests.Perf_Enum.Parse_Flags(text%3a%20%22Red%2c%20Orange%2c%20Yellow%2c%20Green%2c%20Blue%22).html>) | 837.71 ns | 919.22 ns | 1.10 | 0.01 | True | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_11_2023/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Tests.Perf_Enum_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=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Tests.Perf_Enum_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=true_MonoInterpreter=false_RunKind=micro_mono_Regression/System.Tests.Perf_Enum.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-494b5d1b-00a2-49db-8c42-790c507906872f83b2cbfae42fea6/660d2407-c50a-4d83-8dc5-f0cb29898b0a.zip?sv=2021-08-06&se=2023-05-01T20%3A16%3A44Z&sr=c&sp=rl&sig=EdW0T4nVT03%2Bl4O1ieytAJcgmdZU4q4lx%2Ff5c64yS1k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ddda35b-f258-486d-9a92-e509f3b614344ab77d31f814e3d98/c8534ec3-9e95-4840-aaa2-a14ff5860ea1.zip?sv=2021-08-06&se=2023-05-02T19%3A27%3A06Z&sr=c&sp=rl&sig=E22sVGZ7ZAfoY50SZetYBMgnlN74HZTddVDOxJv7uYw%3D>)

<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.Tests.Perf_Enum*' --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.Tests.Perf_Enum* --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.Tests.Perf_Enum*' --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.Tests.Perf_Enum* --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>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-494b5d1b-00a2-49db-8c42-790c507906872f83b2cbfae42fea6/660d2407-c50a-4d83-8dc5-f0cb29898b0a.zip?sv=2021-08-06&se=2023-05-01T20%3A16%3A44Z&sr=c&sp=rl&sig=EdW0T4nVT03%2Bl4O1ieytAJcgmdZU4q4lx%2Ff5c64yS1k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ddda35b-f258-486d-9a92-e509f3b614344ab77d31f814e3d98/c8534ec3-9e95-4840-aaa2-a14ff5860ea1.zip?sv=2021-08-06&se=2023-05-02T19%3A27%3A06Z&sr=c&sp=rl&sig=E22sVGZ7ZAfoY50SZetYBMgnlN74HZTddVDOxJv7uYw%3D>)
### Histogram

#### System.Tests.Perf_Enum.TryParseGeneric_Flags(text: "Red, Orange, Yellow, Green, Blue")

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 905.8874610383233 > 829.7480494734173.
IsChangePoint: Marked as a change because one of 4/1/2023 8:54:51 PM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsRegressionStdDev: Marked as regression because -41.35420759832772 (T) = (0 -877.8970149997054) / Math.Sqrt((59.59618689497541 / (20)) + (57.45319705080059 / (43))) is less than -1.9996235849941724 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (20) + (43) - 2, .025) and -0.1084776528745211 = (791.9844055702247 - 877.8970149997054) / 791.9844055702247 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked as regression because Edge Detector said so.

```
#### System.Tests.Perf_Enum.Parse_Flags(text: "Red, Orange, Yellow, Green, Blue")

```log

```
### Description of detection logic
```
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 919.2178609871612 > 877.862513257293.
IsChangePoint: Marked as a change because one of 4/1/2023 8:54:51 PM, 4/11/2023 1:13:25 AM falls between 4/1/2023 8:54:51 PM and 4/11/2023 1:13:25 AM.
IsRegressionStdDev: Marked as regression because -95.47829757492828 (T) = (0 -920.288541756257) / Math.Sqrt((7.934009779725081 / (20)) + (17.067430699217528 / (43))) is less than -1.9996235849941724 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (20) + (43) - 2, .025) and -0.10183648841249679 = (835.2314988970729 - 920.288541756257) / 835.2314988970729 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked as 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	e65ebc920e766c1644e621875c20e4b1c6875a83
Compare	8ffad5201e02ec8657065aabc543135903767535
Diff	Diff
Configs	CompilationMode:tiered, LLVM:false, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
Array - Duration of single invocation	294.83 ns	459.45 ns	1.56	0.03	False
ReadOnlySpan - Duration of single invocation	458.22 ns	682.39 ns	1.49	0.02	False
ImmutableArray - Duration of single invocation	1.84 μs	2.04 μs	1.11	0.02	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
TryParseGeneric_Flags - Duration of single invocation	787.68 ns	905.89 ns	1.15	0.02	True
Parse_Flags - Duration of single invocation	837.71 ns	919.22 ns	1.10	0.01	True

Uh oh!

[Perf] Linux/x64: 9 Regressions on 4/2/2023 3:55:31 PM #15764

Description

Run Information

Regressions in System.Collections.IterateForEach<String>

Repro

Payloads

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

Payloads

Histogram

System.Collections.IterateForEach<String>.Array(Size: 512)

Description of detection logic

System.Collections.IterateForEach<String>.ReadOnlySpan(Size: 512)

Description of detection logic

System.Collections.IterateForEach<String>.ImmutableArray(Size: 512)

Description of detection logic

Docs

Run Information

Regressions in System.Collections.IndexerSet<String>

Repro

Payloads

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

Payloads

Histogram

System.Collections.IndexerSet<String>.Array(Size: 512)

Description of detection logic

Docs

Run Information

Regressions in System.Diagnostics.Perf_Activity

Repro

Payloads

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

Payloads

Histogram

System.Diagnostics.Perf_Activity.EnumerateActivityEventsLarge

Description of detection logic

Docs

Run Information

Regressions in System.Memory.ReadOnlySpan

Repro

Payloads

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

Payloads

Histogram

System.Memory.ReadOnlySpan.Trim(input: " abcdefg ")

Description of detection logic

Docs

Run Information

Regressions in System.Tests.Perf_Enum

Repro

Payloads

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

Payloads

Histogram

System.Tests.Perf_Enum.TryParseGeneric_Flags(text: "Red, Orange, Yellow, Green, Blue")

Description of detection logic

System.Tests.Perf_Enum.Parse_Flags(text: "Red, Orange, Yellow, Green, Blue")

Description of detection logic

Docs

Metadata

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Issue actions