[Perf] Linux/x64: 2 Regressions on 10/17/2022 3:19:47 PM

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	6dc9a74481888a13573d90424d06484bbf425b4a
Compare	3ba1dd21d91ddbe97dc571e45dc608610660c4f3
Diff	Diff

Regressions in System.Text.Json.Serialization.Tests.ColdStartSerialization<SimpleStructWithProperties>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
NewCustomizedOptions - Duration of single invocation	49.55 μs	54.95 μs	1.11	0.01	False
NewDefaultOptions - Duration of single invocation	43.01 μs	48.29 μs	1.12	0.01	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.Json.Serialization.Tests.ColdStartSerialization<SimpleStructWithProperties>*'

Related Issues

Regressions

Improvements

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.Text.Json.Serialization.Tests.ColdStartSerialization<SimpleStructWithProperties>.NewCustomizedOptions

Description of detection logic

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.
IsRegressionWindowed: Marked as regression because 54.95063085387325 > 52.09670164183033.
IsChangePoint: Marked as a change because one of 10/6/2022 12:41:43 AM, 10/17/2022 12:47:34 PM, 10/18/2022 8:25:03 PM falls between 10/7/2022 9:25:17 PM and 10/18/2022 8:25:03 PM.
IsRegressionStdDev: Marked as regression because -14.546448372851367 (T) = (0 -54292.109505447355) / Math.Sqrt((3861900.3285391256 / (45)) + (195855.23542561987 / (4))) is less than -2.011740513728388 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (45) + (4) - 2, .025) and -0.1090958437801724 = (48951.684211890606 - 54292.109505447355) / 48951.684211890606 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.ColdStartSerialization<SimpleStructWithProperties>.NewDefaultOptions

```log

Description of detection logic

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.
IsRegressionWindowed: Marked as regression because 48.289213844797175 > 45.13925907873548.
IsChangePoint: Marked as a change because one of 10/6/2022 12:41:43 AM, 10/17/2022 12:47:34 PM, 10/18/2022 8:25:03 PM falls between 10/7/2022 9:25:17 PM and 10/18/2022 8:25:03 PM.
IsRegressionStdDev: Marked as regression because -17.405943052019918 (T) = (0 -47723.00615647291) / Math.Sqrt((2997564.0419433257 / (46)) + (252154.46540309754 / (4))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (46) + (4) - 2, .025) and -0.15020890221708183 = (41490.729261862405 - 47723.00615647291) / 41490.729261862405 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

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

[lewing]

Looks like dotnet/runtime#76782

[eiriktsarpalis]

Duplicate of dotnet/runtime#77279 (comment). We should close this issue as by-design. Don't have permissions to close this myself unfortunately.