[Perf] Changes at 4/13/2022 5:30:39 PM

[performanceautofiler]

Run Information

Architecture	x86
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	25.01 ns	36.25 ns	1.45	0.06	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*'

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 36.24884931514035 > 26.385486800757466.
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 -97.94020620416318 (T) = (0 -35.76915102410883) / Math.Sqrt((0.20615596232039693 / (30)) + (0.14719571848661503 / (26))) is less than -2.0048792881871513 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (30) + (26) - 2, .025) and -0.44203968126177157 = (24.804553916859728 - 35.76915102410883) / 24.804553916859728 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

### Run Information

Architecture	x86
OS	Windows 10.0.18362
Baseline	5c57f2c0cda44176e237574ceb51d659ef9915fa
Compare	f216e77788933d4d6906f7f91d09375719f4e6b2
Diff	Diff

Regressions in System.Net.Http.Tests.SocketsHttpHandlerPerfTest

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Get_EnumerateHeaders_Unvalidated - Duration of single invocation	56.01 μs	65.60 μs	1.17	0.07	False

Test Report

Repro

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

Payloads

Baseline
Compare

Histogram

System.Net.Http.Tests.SocketsHttpHandlerPerfTest.Get_EnumerateHeaders_Unvalidated(ssl: True, chunkedResponse: False, responseLength: 1)

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 65.60184449093444 > 58.619233086622806.
IsChangePoint: Marked as a change because one of 3/4/2022 3:52:45 PM, 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 -12.791189710478038 (T) = (0 -65319.49446218333) / Math.Sqrt((596984.4311973805 / (30)) + (13710675.416627705 / (26))) is less than -2.0048792881871513 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (30) + (26) - 2, .025) and -0.16940182825621933 = (55857.1851726844 - 65319.49446218333) / 55857.1851726844 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

[dakersnar]

The second regression might be related to the first, but I'm unsure.