[Perf] Changes at 7/16/2022 10:10:03 AM

[performanceautofiler]

Run Information

Architecture	arm64
OS	ubuntu 18.04
Baseline	00d9488a70ad6e4e8d7aa6e0325d0deba0a14957
Compare	8e40ec4b629abe52b92b6d2665d87fc884cc3033
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
NewCustomConverter - Duration of single invocation	107.05 μs	116.31 μs	1.09	0.50	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>*'

Payloads

Baseline
Compare

Histogram

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

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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 116.3114742165242 > 108.62979291836686.
IsChangePoint: Marked as a change because one of 6/22/2022 5:33:38 PM, 7/16/2022 2:59:06 AM, 7/18/2022 2:17:16 AM falls between 7/8/2022 10:31:34 AM and 7/18/2022 2:17:16 AM.
IsRegressionStdDev: Marked as regression because -7.745719453269519 (T) = (0 -123066.61067622302) / Math.Sqrt((57391997.99529409 / (48)) + (41148893.870531075 / (7))) is less than -2.005745995316835 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (48) + (7) - 2, .025) and -0.20105751603655467 = (102465.210061162 - 123066.61067622302) / 102465.210061162 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
Benchmarking workflow for dotnet/runtime repository

[AndyAyersMS]

Caused by dotnet/runtime#72228
Partially mitigated by dotnet/runtime#73497 (though history doesn't go that far)