[Perf] Windows/x64: 1 Regression on 6/3/2023 11:04:56 AM

[performanceautofiler[bot]]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.18362
Queue	TigerWindows
Baseline	0071d924c2537c2372101fa9fe64a2b37b9e2ca8
Compare	75a180625adb9b3e6e1b7245c9a0890082c7141f
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in MicroBenchmarks.Serializers.Json_FromStream<MyEventsListerViewModel>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
[SystemTextJsonSourceGen - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.18362/MicroBenchmarks.Serializers.Json_FromStream(MyEventsListerViewModel).SystemTextJsonSourceGen.html>)	278.38 μs	406.32 μs	1.46	0.02	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 'MicroBenchmarks.Serializers.Json_FromStream<MyEventsListerViewModel>*'

### Payloads [Baseline]() [Compare]() ### Histogram #### MicroBenchmarks.Serializers.Json_FromStream<MyEventsListerViewModel>.SystemTextJson_SourceGen_ ```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 406.3234375 > 286.9978572938276. IsChangePoint: Marked as a change because one of 5/19/2023 10:30:38 AM, 6/3/2023 4:12:47 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 -3.6537633257846367 (T) = (0 -371098.2249530655) / Math.Sqrt((256642776.10194093 / (31)) + (3171050498.9228764 / (5))) is less than -2.0322445093148245 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (31) + (5) - 2, .025) and -0.3325611333179292 = (278484.95327870786 - 371098.2249530655) / 278484.95327870786 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](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)

[kunalspathak]

https://github.com/dotnet/runtime/issues/87179