[Perf] Linux/arm64: 2 Improvements on 3/4/2023 1:07:20 AM

[performanceautofiler]

Run Information

Architecture	arm64
OS	ubuntu 20.04
Baseline	9fd3ece652fed473c9f2398363da6d7bca41a5d9
Compare	f702d5664477659002bb569a665ccb87577f5765
Diff	Diff

Improvements in System.Tests.Perf_DateTime

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ParseR - Duration of single invocation	53.34 ns	48.69 ns	0.91	0.02	False
ParseO - Duration of single invocation	55.58 ns	49.92 ns	0.90	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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_DateTime*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_DateTime.ParseR

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 48.685168694007054 < 50.62902563562232.
IsChangePoint: Marked as a change because one of 3/3/2023 10:27:59 PM, 3/9/2023 2:25:45 AM falls between 2/28/2023 7:22:28 AM and 3/9/2023 2:25:45 AM.
IsImprovementStdDev: Marked as improvement because 41.322919566843744 (T) = (0 -48.34100643282047) / Math.Sqrt((0.8541176792807232 / (299)) + (0.1747127498906509 / (19))) is greater than 1.9674995188240387 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (19) - 2, .975) and 0.08579252263843472 = (52.87750060012012 - 48.34100643282047) / 52.87750060012012 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_DateTime.ParseO

```log

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 49.924165457689696 < 52.73075922515821.
IsChangePoint: Marked as a change because one of 3/3/2023 10:27:59 PM, 3/9/2023 2:25:45 AM falls between 2/28/2023 7:22:28 AM and 3/9/2023 2:25:45 AM.
IsImprovementStdDev: Marked as improvement because 58.32284175214561 (T) = (0 -49.93535119681646) / Math.Sqrt((0.572196232363905 / (299)) + (0.12326512221040664 / (19))) is greater than 1.9674995188240387 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (19) - 2, .975) and 0.09670207713752607 = (55.281153573978784 - 49.93535119681646) / 55.281153573978784 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

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