[Perf] Windows/x64: 2 Improvements on 11/21/2022 12:41:05 AM

[performanceautofiler]

Run Information

Architecture	x64
OS	Windows 10.0.19042
Baseline	de005e5ea950f852df5befac7c06ae2f717bfc29
Compare	9129083c2fc6ef32479168f0555875b54aee4dfb
Diff	Diff

Improvements in System.Tests.Perf_Char

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Char_ToLowerInvariant - Duration of single invocation	25.96 ns	14.45 ns	0.56	0.05	False
Char_ToUpperInvariant - Duration of single invocation	25.46 ns	15.56 ns	0.61	0.09	False

Test Report

Repro

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

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_Char.Char_ToLowerInvariant(input: "Hello World!")

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 14.445182528946763 < 24.771657485529055.
IsChangePoint: Marked as a change because one of 9/23/2022 1:16:35 AM, 9/29/2022 7:42:19 AM, 11/20/2022 11:32:49 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 72.9526269125995 (T) = (0 -14.437185278113796) / Math.Sqrt((5.787574724991158 / (299)) + (0.00010064312500756905 / (39))) is greater than 1.9670493839589689 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (39) - 2, .975) and 0.41282591048990874 = (24.587572129007707 - 14.437185278113796) / 24.587572129007707 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_Char.Char_ToUpperInvariant(input: "Hello World!")

```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 15.557193374676734 < 25.014576154682786.
IsChangePoint: Marked as a change because one of 9/23/2022 1:16:35 AM, 9/29/2022 7:42:19 AM, 11/20/2022 11:32:49 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 63.8499256692738 (T) = (0 -15.364639172592005) / Math.Sqrt((6.2487302751688825 / (299)) + (0.06747607442082487 / (39))) is greater than 1.9670493839589689 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (39) - 2, .975) and 0.3846643908307335 = (24.969527106248616 - 15.364639172592005) / 24.969527106248616 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