[Perf] Windows/x64: 1 Regression on 6/3/2023 4:12:47 AM

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.19042
Queue	OwlWindows
Baseline	f4ef5c8af72304f679663ba134035206baf84095
Compare	9d550176139810291b8b77982fc99abdebb37db3
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Collections.TryGetValueFalse<Int32, Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Dictionary - Duration of single invocation	1.43 μs	3.63 μs	2.54	0.03	False

Test Report

Repro

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

Payloads

Baseline
Compare

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

Payloads

Baseline
Compare

Histogram

System.Collections.TryGetValueFalse<Int32, Int32>.Dictionary(Size: 512)

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 3.6257707213523402 > 2.5629214903408313.
IsChangePoint: Marked as a change because one of 5/19/2023 10:30:38 AM, 5/26/2023 9:55:14 AM, 6/2/2023 1:11:39 AM, 6/3/2023 12:54:16 AM, 6/5/2023 10:43:22 AM falls between 5/27/2023 6:38:16 PM and 6/5/2023 10:43:22 AM.
IsRegressionStdDev: Marked as regression because -3.4321833271666375 (T) = (0 -3634.327007465569) / Math.Sqrt((849252.0866452918 / (25)) + (129.16710206180593 / (6))) is less than -2.0452296421282288 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (25) + (6) - 2, .025) and -0.21082007569213526 = (3001.541748792112 - 3634.327007465569) / 3001.541748792112 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.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[kunalspathak]

dotnet/runtime#86551