[Perf] Linux/x64: 3 Regressions on 4/24/2026 5:32:18 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [e02138f18db13473c112f3f4edd2be708a8f1db5](https://github.com/dotnet/runtime/commit/e02138f18db13473c112f3f4edd2be708a8f1db5)
Compare | [2de289a898abc66657decd3b86dba5e61fe066c5](https://github.com/dotnet/runtime/commit/2de289a898abc66657decd3b86dba5e61fe066c5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/e02138f18db13473c112f3f4edd2be708a8f1db5...2de289a898abc66657decd3b86dba5e61fe066c5)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Regressions in System.Collections.TryGetValueFalse<BigStruct, BigStruct>

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

• [FrozenDictionaryOptimized - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 1.67 ms | 1.86 ms | 1.11 | 0.22 | False | | |
|

• [ImmutableDictionary - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 1.84 ms | 1.99 ms | 1.08 | 0.20 | False | | |
|

• [ConcurrentDictionary - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 1.51 ms | 1.62 ms | 1.07 | 0.24 | False | | |

![graph]()
![graph]()
![graph]()
[Test Report]()

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

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.TryGetValueFalse*'
```

### System.Collections.TryGetValueFalse<BigStruct, BigStruct>.FrozenDictionaryOptimized(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.TryGetValueFalse<BigStruct, BigStruct>.ImmutableDictionary(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.TryGetValueFalse<BigStruct, BigStruct>.ConcurrentDictionary(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)