[Perf] Changes at 7/31/2022 3:07:22 PM

[performanceautofiler]

Run Information

Architecture	arm64
OS	Windows 10.0.19041
Baseline	ec5e8b5fac0ca3524c01b826a048b0b293b63a7d
Compare	3605700d507d52716ed8750dac35d34dc45f0e3d
Diff	Diff

Improvements in System.Buffers.Text.Tests.Utf8FormatterTests

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
FormatterDateTimeOffsetNow - Duration of single invocation	49.85 ns	46.18 ns	0.93	0.01	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Buffers.Text.Tests.Utf8FormatterTests*'

Payloads

Baseline
Compare

Histogram

System.Buffers.Text.Tests.Utf8FormatterTests.FormatterDateTimeOffsetNow(value: 12/30/2017 3:45:22 AM -08:00)

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 46.18354595761103 < 47.38985788554087.
IsChangePoint: Marked as a change because one of 7/2/2022 7:35:06 PM, 7/6/2022 3:55:24 AM, 7/31/2022 12:39:41 PM, 8/4/2022 5:17:15 AM falls between 7/26/2022 2:47:26 PM and 8/4/2022 5:17:15 AM.
IsImprovementStdDev: Marked as improvement because 25.855668614864875 (T) = (0 -46.44170929306316) / Math.Sqrt((5.2247997357269345 / (299)) + (0.09490665815509312 / (13))) is greater than 1.9676459287777595 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (13) - 2, .975) and 0.08056959081599135 = (50.511391432310816 - 46.44170929306316) / 50.511391432310816 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

### Run Information

Architecture	arm64
OS	Windows 10.0.19041
Baseline	ec5e8b5fac0ca3524c01b826a048b0b293b63a7d
Compare	3605700d507d52716ed8750dac35d34dc45f0e3d
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
GetNow - Duration of single invocation	174.07 ns	161.65 ns	0.93	0.00	False
ToString - Duration of single invocation	40.42 ns	37.49 ns	0.93	0.03	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Tests.Perf_DateTime*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_DateTime.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 161.65330720876818 < 165.1503625645172.
IsChangePoint: Marked as a change because one of 7/31/2022 12:39:41 PM, 8/4/2022 5:17:15 AM falls between 7/26/2022 2:47:26 PM and 8/4/2022 5:17:15 AM.
IsImprovementStdDev: Marked as improvement because 29.559016826255604 (T) = (0 -157.98937174343365) / Math.Sqrt((1.0911913508707092 / (299)) + (3.300915577079742 / (13))) is greater than 1.9676459287777595 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (13) - 2, .975) and 0.08671837721362309 = (172.99085824306408 - 157.98937174343365) / 172.99085824306408 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Tests.Perf_DateTime.ToString(format: "r")

```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 37.49413787490567 < 38.52854197664787.
IsChangePoint: Marked as a change because one of 5/24/2022 3:42:52 PM, 7/2/2022 7:35:06 PM, 7/6/2022 3:55:24 AM, 7/31/2022 12:39:41 PM, 8/4/2022 5:17:15 AM falls between 7/26/2022 2:47:26 PM and 8/4/2022 5:17:15 AM.
IsImprovementStdDev: Marked as improvement because 18.218295694820267 (T) = (0 -37.578223128521) / Math.Sqrt((4.890497016840866 / (299)) + (0.4408097920765952 / (13))) is greater than 1.9676459287777595 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (13) - 2, .975) and 0.09803729103845103 = (41.662723697064706 - 37.578223128521) / 41.662723697064706 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