[Perf] Changes at 8/3/2022 8:16:08 AM

[performanceautofiler[bot]]

Run Information

Architecture	arm64
OS	ubuntu 20.04
Baseline	9a3626e16efb4fb1ae75d806bf66f0769bd842c1
Compare	ed561a2d2f88d9a585b8db95dda03d8c0de4ae4e
Diff	Diff

Regressions in System.Collections.IterateForEach<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
[ImmutableQueue - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Collections.IterateForEach(Int32).ImmutableQueue(Size%3a%20512).html>)	4.17 μs	4.63 μs	1.11	0.04	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Collections.IterateForEach<Int32>*'

### Payloads [Baseline]() [Compare]() ### Histogram #### System.Collections.IterateForEach<Int32>.ImmutableQueue(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 4.625698468228086 > 4.3906914773672066. IsChangePoint: Marked as a change because one of 5/24/2022 3:42:52 PM, 7/28/2022 12:19:57 AM, 8/3/2022 1:34:55 AM, 8/4/2022 5:17:15 AM falls between 7/26/2022 2:47:26 PM and 8/4/2022 5:17:15 AM. IsRegressionStdDev: Marked as regression because -11.413131244469195 (T) = (0 -4628.167642803265) / Math.Sqrt((36971.948630060106 / (42)) + (5.295360822078732 / (3))) is less than -2.016692199226234 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (42) + (3) - 2, .025) and -0.0790268139637435 = (4289.205405194663 - 4628.167642803265) / 4289.205405194663 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)

[EgorBo]

@adamsitnik interesting one here, BDN update destabilized this benchmark

[adamsitnik]

@adamsitnik interesting one here, BDN update destabilized this benchmark

I double checked and the recent BDN update did not contain any Engine code changes. Just .NET 4.8.1 support, NativeAOT fixes and few minor bugs. We have added net6.0 target to the library, but without code changes (except of adding new attributes to few methods).