[Perf] Changes at 6/9/2022 2:26:30 PM

[performanceautofiler]

Run Information

Architecture	x64
OS	Windows 10.0.18362
Baseline	cca6bb6be279ee92325148b8525ece2ebdcb2070
Compare	daffba6b2daf88822fc57c4d53e92d7ed6dd5092
Diff	Diff

Regressions in System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
PingPong - Duration of single invocation	12.94 ms	14.69 ms	1.14	0.12	False

Test Report

Repro

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

Payloads

Baseline
Compare

Histogram

System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests.PingPong

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 14.685014835164836 > 13.609961250000001.
IsChangePoint: Marked as a change because one of 5/9/2022 11:56:12 AM, 6/9/2022 1:48:04 PM, 6/14/2022 8:14:23 AM falls between 6/5/2022 6:02:14 PM and 6/14/2022 8:14:23 AM.
IsRegressionStdDev: Marked as regression because -7.942659838574555 (T) = (0 -14012658.14827611) / Math.Sqrt((398828699802.3671 / (46)) + (76309686710.09929 / (29))) is less than -1.99299712588925 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (46) + (29) - 2, .025) and -0.06412183511526628 = (13168283.636204354 - 14012658.14827611) / 13168283.636204354 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

[mrsharm]

Showed up as a regression in the August perf report for multiple configurations.

System.Threading.Channels.Tests.SpscUnboundedChannelPerfTests.PingPong

Result	Ratio	Alloc Delta	Operating System	Bit	Processor Name
Same	0.95	+8	Windows 11	Arm64	Microsoft SQ1 3.0 GHz
Same	0.99	-8	Windows 11	Arm64	Microsoft SQ1 3.0 GHz
Same	1.01	+72	macOS Monterey 12.3	Arm64	Apple M1 Max
Same	1.04	-7	Windows 10	X64	Intel Xeon CPU E5-1650 v4 3.60GHz
Same	0.97	+6	Windows 10	X64	Intel Core i7-6700 CPU 3.40GHz (Skylake)
Same	1.09	-73	Windows 10	X64	Intel Core i7-6700 CPU 3.40GHz (Skylake)
Same	1.01	-5	Windows 10	X64	Intel Core i7-8650U CPU 1.90GHz (Kaby Lake R)
Same	0.94	-19	Windows 10	X64	Intel Core i9-10900K CPU 3.70GHz
Same	0.91	+24	Windows 11	X64	AMD Ryzen Threadripper PRO 3945WX 12-Cores
Slower	0.88	+9	Windows 11	X64	AMD Ryzen 9 3950X
Same	0.91	-5	Windows 11	X64	AMD Ryzen 9 5900X
Slower	0.78	+9	Windows 11	X64	AMD Ryzen 9 5950X
Same	1.00	+0	Windows 11	X64	Intel Core i7-8700 CPU 3.20GHz (Coffee Lake)
Same	1.07	-23	Windows 11	X64	Intel Core i9-10900K CPU 3.70GHz
Slower	0.37	+6	Windows 11	X64	11th Gen Intel Core i9-11900H 2.50GHz
Same	1.01	-17	ubuntu 18.04	X64	Intel Xeon CPU E5-1650 v4 3.60GHz
Same	0.97	-8	ubuntu 18.04	X64	Intel Core i7-2720QM CPU 2.20GHz (Sandy Bridge)
Same	1.05	-12	ubuntu 18.04	X64	Intel Core i7-8700 CPU 3.20GHz (Coffee Lake)
Same	0.95	+4	ubuntu 20.04	X64	AMD Ryzen 9 5900X
Same	1.03	-17	ubuntu 20.04	X64	Intel Core i9-10900K CPU 3.70GHz
Slower	0.06	+472	Windows 10	X86	Intel Xeon CPU E5-1650 v4 3.60GHz
Same	0.98	+0	Windows 10	X86	Intel Core i7-6700 CPU 3.40GHz (Skylake)
Slower	0.15	+0	Windows 11	X86	AMD Ryzen Threadripper PRO 3945WX 12-Cores
Same	1.03	+114	macOS Big Sur 11.6.8	X64	Intel Core i5-4278U CPU 2.60GHz (Haswell)
Same	0.97	-103	macOS Monterey 12.3.1	X64	Intel Core i7-5557U CPU 3.10GHz (Broadwell)
Same	0.93	-78	macOS Monterey 12.4	X64	Intel Core i5-4278U CPU 2.60GHz (Haswell)