[Perf] Windows/arm64: 1 Improvement on 7/18/2023 1:13:00 AM

[performanceautofiler[bot]]

Run Information

Name	Value
Architecture	arm64
OS	Windows 10.0.19041
Queue	SurfaceWindows
Baseline	bb38848e9877dc0b43860dc219ebe36fc04a6bb3
Compare	16dc5330051a97aec4ba89d21263cdccc7b7552c
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Improvements in System.Collections.TryAddDefaultSize<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
[ConcurrentDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Collections.TryAddDefaultSize(Int32).ConcurrentDictionary(Count%3a%20512).html>) 📝 - Benchmark Source	79.02 μs	71.38 μs	0.90	0.09	False

Test Report

Repro

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

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.TryAddDefaultSize<Int32>*'

### Payloads [Baseline]() [Compare]() ### System.Collections.TryAddDefaultSize<Int32>.ConcurrentDictionary(Count: 512) #### ETL Files #### Histogram #### Description of detection logic ``` IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small. IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small. IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline. IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small. IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small. IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline. IsImprovementWindowed: Marked as improvement because 71.3762595129376 < 74.25283775049981. IsChangePoint: Marked as a change because one of 3/21/2023 8:47:40 PM, 7/17/2023 4:07:27 PM, 7/19/2023 6:59:29 PM falls between 7/10/2023 2:17:11 PM and 7/19/2023 6:59:29 PM. IsImprovementStdDev: Marked as improvement because 85.39428195228992 (T) = (0 -71405.06218772533) / Math.Sqrt((2438453.885204144 / (299)) + (1659.1881498546609 / (2))) is greater than 1.9679296690655894 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (2) - 2, .975) and 0.10181749592158941 = (79499.50245467231 - 71405.06218772533) / 79499.50245467231 is greater than 0.05. IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so. ``` #### 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)

[cincuranet]

Could this be caused by https://github.com/dotnet/runtime/pull/87374? cc @EgorBo