[Perf] Windows/x64: 5 Regressions on 4/12/2023 8:39:35 PM

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	Windows 10.0.18362
Queue	TigerWindows
Baseline	e7ed417c2bf4a24a0694a387f33ba843a2318fdc
Compare	f92b9ef636a4cc9599b33446e30e7a489591ca46
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Tests.Perf_Single

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ToStringWithFormat - Duration of single invocation	174.39 ns	183.18 ns	1.05	0.02	False				Trace	Trace
ToStringWithFormat - Duration of single invocation	208.45 ns	228.31 ns	1.10	0.00	False				Trace	Trace
ToString - Duration of single invocation	172.01 ns	181.56 ns	1.06	0.02	False	1483.1073284471713	1526.728043077449	1.0294117045972317)	Trace	Trace
ToStringWithFormat - Duration of single invocation	206.50 ns	226.19 ns	1.10	0.01	False	1759.2487704492462	1817.3621844410097	1.0330330848984612)	Trace	Trace
ToStringWithFormat - Duration of single invocation	172.10 ns	182.99 ns	1.06	0.01	False				Trace	Trace

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Single*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_Single.ToStringWithFormat(value: 3.4028235E+38, format: "R")

Description of detection logic

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.
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 183.18098328399165 > 182.86223498204842.
IsChangePoint: Marked as a change because one of 3/17/2023 10:06:19 AM, 4/12/2023 4:44:56 PM, 4/17/2023 11:29:15 PM falls between 4/9/2023 11:24:15 AM and 4/17/2023 11:29:15 PM.
IsRegressionStdDev: Marked as regression because -17.18153646679879 (T) = (0 -184.2949237149595) / Math.Sqrt((3.6278340045107633 / (33)) + (0.7212425266862946 / (4))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (4) - 2, .025) and -0.05288236211719957 = (175.03847566063138 - 184.2949237149595) / 175.03847566063138 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.

Baseline JIT Disasm

Complete output

Compare JIT Disasm

Complete output

JIT Disasm Diff

Link

System.Tests.Perf_Single.ToStringWithFormat(value: -3.4028235E+38, format: "G17")

Description of detection logic

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.
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 228.30868034213563 > 218.67145089518388.
IsChangePoint: Marked as a change because one of 4/12/2023 8:39:35 PM, 4/17/2023 11:29:15 PM falls between 4/9/2023 11:24:15 AM and 4/17/2023 11:29:15 PM.
IsRegressionStdDev: Marked as regression because -7.091992657232193 (T) = (0 -235.9949600270185) / Math.Sqrt((1.5201258220134337 / (34)) + (47.314311190116996 / (3))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (34) + (3) - 2, .025) and -0.13573537379720668 = (207.79044614767542 - 235.9949600270185) / 207.79044614767542 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.

Baseline JIT Disasm

Complete output

Compare JIT Disasm

Complete output

JIT Disasm Diff

Link

System.Tests.Perf_Single.ToString(value: -3.4028235E+38)

Description of detection logic

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.
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 181.55502228615939 > 180.57587943359172.
IsChangePoint: Marked as a change because one of 3/25/2023 10:49:06 AM, 4/12/2023 8:39:35 PM, 4/17/2023 11:29:15 PM falls between 4/9/2023 11:24:15 AM and 4/17/2023 11:29:15 PM.
IsRegressionStdDev: Marked as regression because -10.088801031936988 (T) = (0 -183.23074535411538) / Math.Sqrt((4.955921061201516 / (34)) + (2.154373823286651 / (3))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (34) + (3) - 2, .025) and -0.053936678049342 = (173.85365664780204 - 183.23074535411538) / 173.85365664780204 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.

Baseline JIT Disasm

Complete output

Compare JIT Disasm

Complete output

JIT Disasm Diff

Link

System.Tests.Perf_Single.ToStringWithFormat(value: 3.4028235E+38, format: "G17")

Description of detection logic

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.
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 226.19373675815802 > 216.1650776510515.
IsChangePoint: Marked as a change because one of 4/12/2023 8:39:35 PM, 4/17/2023 11:29:15 PM falls between 4/9/2023 11:24:15 AM and 4/17/2023 11:29:15 PM.
IsRegressionStdDev: Marked as regression because -4.666839665361526 (T) = (0 -231.81093524362348) / Math.Sqrt((1.2505030730251219 / (33)) + (63.1058376502304 / (2))) is less than -2.034515297446192 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (2) - 2, .025) and -0.12759130520831455 = (205.58063384569823 - 231.81093524362348) / 205.58063384569823 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.

Baseline JIT Disasm

Complete output

Compare JIT Disasm

Complete output

JIT Disasm Diff

Link

System.Tests.Perf_Single.ToStringWithFormat(value: 3.4028235E+38, format: "G")

Description of detection logic

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.
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 182.98930486043295 > 180.84552291835843.
IsChangePoint: Marked as a change because one of 3/6/2023 6:03:21 AM, 3/17/2023 5:15:23 PM, 4/12/2023 8:39:35 PM, 4/17/2023 11:29:15 PM falls between 4/9/2023 11:24:15 AM and 4/17/2023 11:29:15 PM.
IsRegressionStdDev: Marked as regression because -12.669553429308806 (T) = (0 -184.2738732741128) / Math.Sqrt((4.426139222496169 / (34)) + (1.8329622292903862 / (3))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (34) + (3) - 2, .025) and -0.06291503091601201 = (173.36651370458745 - 184.2738732741128) / 173.36651370458745 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.

Baseline JIT Disasm

Complete output

Compare JIT Disasm

Complete output

JIT Disasm Diff

Link

Docs

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

[EgorBo]

Most likely dotnet/runtime#84587 (hard to tell due to missing data)