[Perf] Windows/x64: 1 Improvement on 11/23/2022 11:56:05 PM

[performanceautofiler]

Run Information

Architecture	x64
OS	Windows 10.0.19042
Baseline	4e8e5e560c41b3b7bd7f91ce907ecc49aa0975a8
Compare	8606a915f57d6e1d68b7e2c0fe788bc4180eed01
Diff	Diff

Improvements in System.Text.Tests.Perf_Encoding

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
GetByteCount - Duration of single invocation	26.18 ns	24.01 ns	0.92	0.04	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Tests.Perf_Encoding*'

Payloads

Baseline
Compare

Histogram

System.Text.Tests.Perf_Encoding.GetByteCount(size: 512, encName: "utf-8")

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 24.008112913292734 < 24.839305150294425.
IsChangePoint: Marked as a change because one of 10/25/2022 2:34:53 PM, 10/31/2022 10:23:25 PM, 11/2/2022 9:35:40 AM, 11/7/2022 4:10:19 PM, 11/11/2022 5:53:56 PM, 11/18/2022 7:31:41 AM, 11/23/2022 8:02:34 PM, 11/29/2022 1:43:29 AM falls between 11/20/2022 12:28:28 PM and 11/29/2022 1:43:29 AM.
IsImprovementStdDev: Marked as improvement because 18.28550783813289 (T) = (0 -23.589667430990705) / Math.Sqrt((1.9616754060535002 / (299)) + (0.18222604257272473 / (21))) is greater than 1.967451947860886 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (21) - 2, .975) and 0.08733047957738149 = (25.84688860877849 - 23.589667430990705) / 25.84688860877849 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

[EgorBo]

Could be dotnet/runtime#78741