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Regressions in System.Buffers.Binary.Tests.BinaryReadAndWriteTests #68338

@performanceautofiler

Description

@performanceautofiler

Run Information

Architecture x64
OS Windows 10.0.18362
Baseline 5c57f2c0cda44176e237574ceb51d659ef9915fa
Compare f216e77788933d4d6906f7f91d09375719f4e6b2
Diff Diff

Regressions in System.Buffers.Binary.Tests.BinaryReadAndWriteTests

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
ReadStructFieldByFieldUsingBitConverterBE - Duration of single invocation 21.41 ns 32.53 ns 1.52 0.11 True

Test Report

Repro

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

Payloads

Baseline
Compare

Histogram

System.Buffers.Binary.Tests.BinaryReadAndWriteTests.ReadStructFieldByFieldUsingBitConverterBE


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 32.53420517559187 > 21.87106496083853.
IsChangePoint: Marked as a change because one of 4/13/2022 1:59:07 PM, 4/19/2022 4:39:14 PM falls between 4/10/2022 11:44:05 PM and 4/19/2022 4:39:14 PM.
IsRegressionStdDev: Marked as regression because -88.23270965365063 (T) = (0 -32.283158821426134) / Math.Sqrt((0.3468327710995198 / (30)) + (0.1563465723247371 / (26))) is less than -2.0048792881871513 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (30) + (26) - 2, .025) and -0.5681883882104664 = (20.586275899074835 - 32.283158821426134) / 20.586275899074835 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 as regression because Edge Detector said so.

Docs

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

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