[Perf] Changes at 3/31/2022 1:23:38 AM

[performanceautofiler]

Run Information

Architecture	arm64
OS	Windows 10.0.19041
Baseline	0bbf45371fd3b0ca24c20cd5c27943e418cead2b
Compare	43ab6b874e08f55fe88081f75ddde8e4a2fe726e
Diff	Diff

Regressions in System.Buffers.Tests.RentReturnArrayPoolTests<Byte>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ProducerConsumer - Duration of single invocation	2.63 μs	4.86 μs	1.84	0.40	False

Test Report

Repro

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

Payloads

Baseline
Compare

Histogram

System.Buffers.Tests.RentReturnArrayPoolTests<Byte>.ProducerConsumer(RentalSize: 4096, ManipulateArray: True, Async: False, UseSharedPool: False)

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 we could not find enough baseline builds for window checking.
IsChangePoint: Marked as a change because one of 3/30/2022 8:03:41 PM, 4/7/2022 2:11:06 AM falls between 3/22/2022 12:26:23 PM and 4/7/2022 2:11:06 AM.
IsRegressionStdDev: Marked as regression because -5.370487525504583 (T) = (0 -4383.522070330401) / Math.Sqrt((141117.21224606023 / (3)) + (1050338.7122252465 / (26))) is less than -2.051830516474954 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (3) + (26) - 2, .025) and -0.5680720897024363 = (2795.4850412280703 - 4383.522070330401) / 2795.4850412280703 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	Windows 10.0.19041
Baseline	0bbf45371fd3b0ca24c20cd5c27943e418cead2b
Compare	43ab6b874e08f55fe88081f75ddde8e4a2fe726e
Diff	Diff

Regressions in System.Net.Tests.DnsTests

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
GetHostName - Duration of single invocation	38.41 μs	40.89 μs	1.06	0.18	False

Test Report

Repro

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

Payloads

Baseline
Compare

Histogram

System.Net.Tests.DnsTests.GetHostName

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 we could not find enough baseline builds for window checking.
IsChangePoint: Marked as a change because one of 3/30/2022 8:03:41 PM, 4/7/2022 2:11:06 AM falls between 3/22/2022 12:26:23 PM and 4/7/2022 2:11:06 AM.
IsRegressionStdDev: Marked as regression because -5.573801949561544 (T) = (0 -41023.42630944463) / Math.Sqrt((633947.013976682 / (3)) + (768698.073890111 / (26))) is less than -2.051830516474954 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (3) + (26) - 2, .025) and -0.07144833165023655 = (38287.82508463162 - 41023.42630944463) / 38287.82508463162 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