[Perf] Changes at 4/26/2022 10:28:11 AM

[performanceautofiler]

Run Information

Architecture	arm64
OS	ubuntu 18.04
Baseline	b42adaddff9047e32c9d7f4145746dbb579758f2
Compare	ae9f1ca5717045293f726877de18a8f6cf792c5b
Diff	Diff

Regressions in System.Memory.Span<Byte>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Reverse - Duration of single invocation	236.57 ns	304.36 ns	1.29	0.00	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Memory.Span<Byte>*'

Payloads

Baseline
Compare

Histogram

System.Memory.Span<Byte>.Reverse(Size: 512)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 304.35949948262686 > 248.3930551269636.
IsChangePoint: Marked as a change because one of 4/26/2022 6:18:08 AM, 4/27/2022 8:46:50 AM falls between 4/19/2022 6:32:34 PM and 4/27/2022 8:46:50 AM.
IsRegressionStdDev: Marked as regression because -36.80629271423164 (T) = (0 -300.8902823773598) / Math.Sqrt((4.388552504324426 / (35)) + (9.075039846842405 / (3))) is less than -2.028094000977961 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (3) - 2, .025) and -0.2773324944252082 = (235.56144049459778 - 300.8902823773598) / 235.56144049459778 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
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	ubuntu 18.04
Baseline	b42adaddff9047e32c9d7f4145746dbb579758f2
Compare	ae9f1ca5717045293f726877de18a8f6cf792c5b
Diff	Diff

Regressions in System.Memory.Span<Int32>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Reverse - Duration of single invocation	231.34 ns	368.34 ns	1.59	0.00	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Memory.Span<Int32>*'

Payloads

Baseline
Compare

Histogram

System.Memory.Span<Int32>.Reverse(Size: 512)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 368.3445423808275 > 245.4502266632296.
IsChangePoint: Marked as a change because one of 4/26/2022 6:18:08 AM, 4/27/2022 8:46:50 AM falls between 4/19/2022 6:32:34 PM and 4/27/2022 8:46:50 AM.
IsRegressionStdDev: Marked as regression because -66.20760710519882 (T) = (0 -366.4310831835599) / Math.Sqrt((6.681930082463662 / (35)) + (11.359113777362822 / (3))) is less than -2.028094000977961 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (3) - 2, .025) and -0.5633231949364733 = (234.39240482736525 - 366.4310831835599) / 234.39240482736525 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

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