[Perf] Linux/x64: 3 Improvements on 2/12/2023 9:12:37 PM

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	6826a7fce5606e317967172c1c4e758eed4d49a9
Compare	252018c3d3fffdb592413cf61d5b80cf751e0a59
Diff	Diff

Improvements in System.Tests.Perf_DateTimeOffset

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
GetNow - Duration of single invocation	622.03 ns	411.84 ns	0.66	0.20	False
Parse - Duration of single invocation	1.05 μs	810.88 ns	0.77	0.06	False
TryParse - Duration of single invocation	1.06 μs	799.24 ns	0.76	0.10	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_DateTimeOffset*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_DateTimeOffset.GetNow

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 411.84230263107213 < 589.5503953180196.
IsChangePoint: Marked as a change because one of 1/13/2023 11:01:49 AM, 2/12/2023 2:35:10 PM, 2/14/2023 10:45:34 AM falls between 2/5/2023 7:19:43 PM and 2/14/2023 10:45:34 AM.
IsImprovementStdDev: Marked as improvement because 13.618205410703856 (T) = (0 -419.4604735174622) / Math.Sqrt((11296.748549453047 / (299)) + (102.40412051622603 / (7))) is greater than 1.9677981407170237 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (7) - 2, .975) and 0.19030891004584796 = (518.0500053930614 - 419.4604735174622) / 518.0500053930614 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_DateTimeOffset.Parse(value: "12/30/2017 3:45:22 AM -08:00")

```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 810.8786686220528 < 0.9982848332869335.
IsChangePoint: Marked as a change because one of 1/13/2023 11:01:49 AM, 2/12/2023 11:53:55 PM, 2/14/2023 10:45:34 AM falls between 2/5/2023 7:19:43 PM and 2/14/2023 10:45:34 AM.
IsImprovementStdDev: Marked as improvement because 17.315411152211354 (T) = (0 -807.6270741882983) / Math.Sqrt((14802.025326144585 / (299)) + (19.078224625504603 / (5))) is greater than 1.9678502273660254 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (5) - 2, .975) and 0.13536404940704144 = (934.0660351150514 - 807.6270741882983) / 934.0660351150514 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_DateTimeOffset.TryParse(value: "12/30/2017 3:45:22 AM -08:00")

```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 799.2434243760869 < 0.9812544315733023.
IsChangePoint: Marked as a change because one of 1/13/2023 11:01:49 AM, 2/12/2023 11:53:55 PM, 2/14/2023 10:45:34 AM falls between 2/5/2023 7:19:43 PM and 2/14/2023 10:45:34 AM.
IsImprovementStdDev: Marked as improvement because 17.585831145212282 (T) = (0 -799.8540655736525) / Math.Sqrt((14664.739993305646 / (299)) + (20.579694955619583 / (5))) is greater than 1.9678502273660254 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (5) - 2, .975) and 0.13815908961723106 = (928.0762330235794 - 799.8540655736525) / 928.0762330235794 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

[lewing]

looks like dotnet/runtime#81695 @jandupej @SamMonoRT