[Perf][mono] Perf_SingleCharFrozenDictionary regressions on 1/28/2025 9:07:53 AM

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [f41b65f26753bfb061abf3841f11b2c12e173e5c](https://github.com/dotnet/runtime/commit/f41b65f26753bfb061abf3841f11b2c12e173e5c)
Compare | [3ee4c4141d45765c18eb32680a77a617f7f57f17](https://github.com/dotnet/runtime/commit/3ee4c4141d45765c18eb32680a77a617f7f57f17)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f41b65f26753bfb061abf3841f11b2c12e173e5c...3ee4c4141d45765c18eb32680a77a617f7f57f17)
Configs | CompilationMode:tiered, LLVM:true, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Collections.Perf_SingleCharFrozenDictionary

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%2010000).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 145.90 μs | 183.30 μs | 1.26 | 0.00 | False | | |
|<ul><li>[TryGetValue_True_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count%3a%2010).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 210.31 ns | 252.01 ns | 1.20 | 0.01 | False | | |
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%201000).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 14.59 μs | 18.35 μs | 1.26 | 0.00 | False | | |
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%20100).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.45 μs | 1.78 μs | 1.23 | 0.00 | False | | |
|<ul><li>[TryGetValue_True_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count%3a%20100).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.05 μs | 2.46 μs | 1.20 | 0.02 | False | | |
|<ul><li>[TryGetValue_True_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count%3a%201000).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 20.66 μs | 25.18 μs | 1.22 | 0.01 | False | | |
|<ul><li>[TryGetValue_True_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count%3a%2010000).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 204.87 μs | 252.51 μs | 1.23 | 0.02 | False | | |
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%2010).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 152.43 ns | 185.00 ns | 1.21 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SingleCharFrozenDictionary_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SingleCharFrozenDictionary_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SingleCharFrozenDictionary_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SingleCharFrozenDictionary_004.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SingleCharFrozenDictionary_005.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SingleCharFrozenDictionary_006.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SingleCharFrozenDictionary_007.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SingleCharFrozenDictionary_008.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SingleCharFrozenDictionary.html>)

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

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


#### Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))
- Libraries build extracted to `runtime/artifacts` or build instructions: [Libraries README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/libraries/README.md) args: `-subset libs+libs.tests -rc release -configuration Release -arch $RunArch -framework net8.0`
- CoreCLR product build extracted to `runtime/artifacts/bin/coreclr/$RunOS.$RunArch.Release`, build instructions: [CoreCLR README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/coreclr/README.md) args: `-subset clr+libs -rc release -configuration Release -arch $RunArch -framework net8.0`
- AOT MONO build extracted to `runtime/artifacts/bin/mono/$RunOS.$RunArch.Release`, build instructions: [MONO README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/mono/README.md) args: `-arch $RunArch -os $RunOS -s mono+libs+host+packs -c Release /p:CrossBuild=false /p:MonoLLVMUseCxx11Abi=false`
- Dotnet SDK installed for dotnet commands
- Running commands from the runtime folder

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

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

# Create aot directory
mkdir -p $RunDir/artifacts/bin/aot/sgen
mkdir -p $RunDir/artifacts/bin/aot/pack
cp -r $RunDir/artifacts/obj/mono/$RunOS.$RunArch.Release/mono/* $RunDir/artifacts/bin/aot/sgen
cp -r $RunDir/artifacts/bin/microsoft.netcore.app.runtime.$RunOS-$RunArch/Release/* $RunDir/artifacts/bin/aot/pack

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

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

# One line run:
python3 $RunDir/performance/scripts/benchmarks_ci.py --csproj $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Collections.Perf_SingleCharFrozenDictionary*' --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.Perf_SingleCharFrozenDictionary* --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.Perf_SingleCharFrozenDictionary*' --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.Perf_SingleCharFrozenDictionary* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack -aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages --buildTimeout 1200
```

</details>

<details>

### System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 10000)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 10)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 1000)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 100)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 100)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 1000)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 10000)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 10)

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


---


### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [f41b65f26753bfb061abf3841f11b2c12e173e5c](https://github.com/dotnet/runtime/commit/f41b65f26753bfb061abf3841f11b2c12e173e5c)
Compare | [3ee4c4141d45765c18eb32680a77a617f7f57f17](https://github.com/dotnet/runtime/commit/3ee4c4141d45765c18eb32680a77a617f7f57f17)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f41b65f26753bfb061abf3841f11b2c12e173e5c...3ee4c4141d45765c18eb32680a77a617f7f57f17)
Configs | CompilationMode:tiered, LLVM:true, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Collections.Perf_DefaultFrozenDictionary

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%2010).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 165.37 ns | 198.91 ns | 1.20 | 0.01 | False | | |
|<ul><li>[TryGetValue_True_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_True_FrozenDictionary(Count%3a%2010).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 208.75 ns | 250.61 ns | 1.20 | 0.03 | False | | |
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%20100).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.50 μs | 2.88 μs | 1.15 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_DefaultFrozenDictionary_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_DefaultFrozenDictionary_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_DefaultFrozenDictionary_003.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_DefaultFrozenDictionary.html>)

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

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


#### Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))
- Libraries build extracted to `runtime/artifacts` or build instructions: [Libraries README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/libraries/README.md) args: `-subset libs+libs.tests -rc release -configuration Release -arch $RunArch -framework net8.0`
- CoreCLR product build extracted to `runtime/artifacts/bin/coreclr/$RunOS.$RunArch.Release`, build instructions: [CoreCLR README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/coreclr/README.md) args: `-subset clr+libs -rc release -configuration Release -arch $RunArch -framework net8.0`
- AOT MONO build extracted to `runtime/artifacts/bin/mono/$RunOS.$RunArch.Release`, build instructions: [MONO README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/mono/README.md) args: `-arch $RunArch -os $RunOS -s mono+libs+host+packs -c Release /p:CrossBuild=false /p:MonoLLVMUseCxx11Abi=false`
- Dotnet SDK installed for dotnet commands
- Running commands from the runtime folder

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

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

# Create aot directory
mkdir -p $RunDir/artifacts/bin/aot/sgen
mkdir -p $RunDir/artifacts/bin/aot/pack
cp -r $RunDir/artifacts/obj/mono/$RunOS.$RunArch.Release/mono/* $RunDir/artifacts/bin/aot/sgen
cp -r $RunDir/artifacts/bin/microsoft.netcore.app.runtime.$RunOS-$RunArch/Release/* $RunDir/artifacts/bin/aot/pack

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

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

# One line run:
python3 $RunDir/performance/scripts/benchmarks_ci.py --csproj $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Collections.Perf_DefaultFrozenDictionary*' --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.Perf_DefaultFrozenDictionary* --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.Perf_DefaultFrozenDictionary*' --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.Perf_DefaultFrozenDictionary* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack -aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages --buildTimeout 1200
```

</details>

<details>

### System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 10)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 10)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 100)

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


---


### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [f41b65f26753bfb061abf3841f11b2c12e173e5c](https://github.com/dotnet/runtime/commit/f41b65f26753bfb061abf3841f11b2c12e173e5c)
Compare | [3ee4c4141d45765c18eb32680a77a617f7f57f17](https://github.com/dotnet/runtime/commit/3ee4c4141d45765c18eb32680a77a617f7f57f17)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f41b65f26753bfb061abf3841f11b2c12e173e5c...3ee4c4141d45765c18eb32680a77a617f7f57f17)
Configs | CompilationMode:tiered, LLVM:true, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Collections.Perf_SubstringFrozenDictionary

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%2010).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 200.18 ns | 239.19 ns | 1.19 | 0.00 | False | | |
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%20100).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.96 μs | 2.36 μs | 1.21 | 0.00 | False | | |
|<ul><li>[TryGetValue_True_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_True_FrozenDictionary(Count%3a%2010).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 258.36 ns | 294.67 ns | 1.14 | 0.03 | False | | |
|<ul><li>[TryGetValue_True_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_True_FrozenDictionary(Count%3a%20100).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 2.58 μs | 2.97 μs | 1.15 | 0.01 | False | | |
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%2010000).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 237.21 μs | 277.88 μs | 1.17 | 0.05 | False | | |
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%201000).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 20.49 μs | 24.37 μs | 1.19 | 0.00 | False | | |
|<ul><li>[TryGetValue_True_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_True_FrozenDictionary(Count%3a%201000).html>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 29.17 μs | 32.90 μs | 1.13 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SubstringFrozenDictionary_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SubstringFrozenDictionary_002.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SubstringFrozenDictionary_003.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SubstringFrozenDictionary_004.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SubstringFrozenDictionary_005.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SubstringFrozenDictionary_006.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SubstringFrozenDictionary_007.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.Perf_SubstringFrozenDictionary.html>)

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

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


#### Prerequisites (Files either built locally (with build.(sh/cmd) or downloaded from payload above (if same system setup) (in this order))
- Libraries build extracted to `runtime/artifacts` or build instructions: [Libraries README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/libraries/README.md) args: `-subset libs+libs.tests -rc release -configuration Release -arch $RunArch -framework net8.0`
- CoreCLR product build extracted to `runtime/artifacts/bin/coreclr/$RunOS.$RunArch.Release`, build instructions: [CoreCLR README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/coreclr/README.md) args: `-subset clr+libs -rc release -configuration Release -arch $RunArch -framework net8.0`
- AOT MONO build extracted to `runtime/artifacts/bin/mono/$RunOS.$RunArch.Release`, build instructions: [MONO README](https://github.com/dotnet/runtime/blob/main/docs/workflow/building/mono/README.md) args: `-arch $RunArch -os $RunOS -s mono+libs+host+packs -c Release /p:CrossBuild=false /p:MonoLLVMUseCxx11Abi=false`
- Dotnet SDK installed for dotnet commands
- Running commands from the runtime folder

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

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

# Create aot directory
mkdir -p $RunDir/artifacts/bin/aot/sgen
mkdir -p $RunDir/artifacts/bin/aot/pack
cp -r $RunDir/artifacts/obj/mono/$RunOS.$RunArch.Release/mono/* $RunDir/artifacts/bin/aot/sgen
cp -r $RunDir/artifacts/bin/microsoft.netcore.app.runtime.$RunOS-$RunArch/Release/* $RunDir/artifacts/bin/aot/pack

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

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

# One line run:
python3 $RunDir/performance/scripts/benchmarks_ci.py --csproj $RunDir/performance/src/benchmarks/micro/MicroBenchmarks.csproj --incremental no --architecture $RunArch -f net8.0 --filter 'System.Collections.Perf_SubstringFrozenDictionary*' --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.Perf_SubstringFrozenDictionary* --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.Perf_SubstringFrozenDictionary*' --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.Perf_SubstringFrozenDictionary* --anyCategories Libraries Runtime " --category-exclusion-filter NoAOT NoWASM --runtimes monoaotllvm --aotcompilerpath $RunDir\artifacts\bin\aot\sgen\mini\mono-sgen.exe --customruntimepack $RunDir\artifacts\bin\aot\pack -aotcompilermode llvm --logBuildOutput --generateBinLog " --artifacts $RunDir\artifacts\BenchmarkDotNet.Artifacts --packages $RunDir\performance\artifacts\packages --buildTimeout 1200
```

</details>

<details>

### System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 10)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 100)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 10)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 100)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 10000)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 1000)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 1000)

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


---


### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [f41b65f26753bfb061abf3841f11b2c12e173e5c](https://github.com/dotnet/runtime/commit/f41b65f26753bfb061abf3841f11b2c12e173e5c)
Compare | [3ee4c4141d45765c18eb32680a77a617f7f57f17](https://github.com/dotnet/runtime/commit/3ee4c4141d45765c18eb32680a77a617f7f57f17)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f41b65f26753bfb061abf3841f11b2c12e173e5c...3ee4c4141d45765c18eb32680a77a617f7f57f17)
Configs | CompilationMode:tiered, LLVM:true, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono


### Regressions in System.Collections.TryGetValueFalse&lt;String, String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[FrozenDictionaryOptimized - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 22.04_LLVM=true_MonoAOT=true_MonoInterpreter=false_RunKind=micro_mono/System.Collections.TryGetValueFalse(String%2c%20String).FrozenDictionaryOptimized(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueFalse.cs#L134-#L143>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 19.64 μs | 20.72 μs | 1.06 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.TryGetValueFalse%28String%2C%20String%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_04_2025/refs/heads/main_arm64_ubuntu%2022.04_LLVM%3Dtrue_MonoAOT%3Dtrue_MonoInterpreter%3Dfalse_RunKind%3Dmicro_mono_Regression/System.Collections.TryGetValueFalse%28String%2C%20String%29.html>)

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

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


#### Prerequisites (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.TryGetValueFalse&lt;String, 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.TryGetValueFalse&lt;String, 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.TryGetValueFalse&lt;String, 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.TryGetValueFalse&lt;String, 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>

### System.Collections.TryGetValueFalse&lt;String, String&gt;.FrozenDictionaryOptimized(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms



### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	f41b65f26753bfb061abf3841f11b2c12e173e5c
Compare	3ee4c4141d45765c18eb32680a77a617f7f57f17
Diff	Diff
Configs	CompilationMode:tiered, LLVM:true, MonoAOT:true, MonoInterpreter:false, RunKind:micro_mono

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
TryGetValue_False_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	145.90 μs	183.30 μs	1.26	0.00	False
TryGetValue_True_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	210.31 ns	252.01 ns	1.20	0.01	False
TryGetValue_False_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	14.59 μs	18.35 μs	1.26	0.00	False
TryGetValue_False_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	1.45 μs	1.78 μs	1.23	0.00	False
TryGetValue_True_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	2.05 μs	2.46 μs	1.20	0.02	False
TryGetValue_True_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	20.66 μs	25.18 μs	1.22	0.01	False
TryGetValue_True_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	204.87 μs	252.51 μs	1.23	0.02	False
TryGetValue_False_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	152.43 ns	185.00 ns	1.21	0.00	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
TryGetValue_False_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	165.37 ns	198.91 ns	1.20	0.01	False
TryGetValue_True_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	208.75 ns	250.61 ns	1.20	0.03	False
TryGetValue_False_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	2.50 μs	2.88 μs	1.15	0.01	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
TryGetValue_False_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	200.18 ns	239.19 ns	1.19	0.00	False
TryGetValue_False_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	1.96 μs	2.36 μs	1.21	0.00	False
TryGetValue_True_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	258.36 ns	294.67 ns	1.14	0.03	False
TryGetValue_True_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	2.58 μs	2.97 μs	1.15	0.01	False
TryGetValue_False_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	237.21 μs	277.88 μs	1.17	0.05	False
TryGetValue_False_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	20.49 μs	24.37 μs	1.19	0.00	False
TryGetValue_True_FrozenDictionary - Duration of single invocation ADX - Test Multi Config Graph	29.17 μs	32.90 μs	1.13	0.01	False

[Perf][mono] Perf_SingleCharFrozenDictionary regressions on 1/28/2025 9:07:53 AM #112236

Description

Run Information

Regressions in System.Collections.Perf_SingleCharFrozenDictionary

Repro

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

System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 10000)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 10)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 1000)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 100)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 100)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 1000)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 10000)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SingleCharFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 10)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.Perf_DefaultFrozenDictionary

Repro

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

System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 10)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 10)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 100)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.Perf_SubstringFrozenDictionary

Repro

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

System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 10)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 100)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 10)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_True_FrozenDictionary(Count: 100)

ETL Files

Histogram

JIT Disasms

System.Collections.Perf_SubstringFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 10000)

ETL Files

Histogram

JIT Disasms