Regressions in System.Text.Json

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	5108757b997c59ab8ba1fc5309ab0d4e730e2b77
Compare	f4b715f1cfadcbf85486f369724528c051be5733
Diff	Diff

Regressions in System.Text.Json.Tests.Perf_Deep

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
WriteDeepUtf8 - Duration of single invocation	3.64 ms	3.87 ms	1.07	0.00	False
WriteDeepUtf8 - Duration of single invocation	3.46 ms	3.76 ms	1.09	0.00	False
WriteDeepUtf16 - Duration of single invocation	3.40 ms	3.70 ms	1.09	0.01	False
WriteDeepUtf16 - Duration of single invocation	3.56 ms	3.97 ms	1.12	0.01	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.Json.Tests.Perf_Deep*'

Related Issues

Regressions

Improvements

Details

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.Text.Json.Tests.Perf_Deep.WriteDeepUtf8(Formatted: False, SkipValidation: 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.
IsRegressionWindowed: Marked as regression because 3.8734119681318675 > 3.7982622619927544.
IsChangePoint: Marked as a change because one of 9/1/2022 8:04:48 PM, 10/25/2022 8:17:52 AM, 11/1/2022 2:33:16 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 2:33:16 AM.
IsRegressionStdDev: Marked as regression because -29.823513559608447 (T) = (0 -3899533.7147466913) / Math.Sqrt((1338281149.2980132 / (19)) + (839361701.5035698 / (32))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (32) - 2, .025) and -0.08130778169067243 = (3606312.4494023323 - 3899533.7147466913) / 3606312.4494023323 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Deep.WriteDeepUtf8(Formatted: False, SkipValidation: True)

```log

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.
IsRegressionWindowed: Marked as regression because 3.7595468694638687 > 3.630351659113247.
IsChangePoint: Marked as a change because one of 8/30/2022 6:17:03 PM, 10/25/2022 8:17:52 AM, 11/1/2022 2:33:16 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 2:33:16 AM.
IsRegressionStdDev: Marked as regression because -31.067833668953444 (T) = (0 -3753619.655967878) / Math.Sqrt((1645618186.3782263 / (19)) + (499084908.15090096 / (32))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (32) - 2, .025) and -0.09131750403854397 = (3439530.331069724 - 3753619.655967878) / 3439530.331069724 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Deep.WriteDeepUtf16(Formatted: False, SkipValidation: True)

```log

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.
IsRegressionWindowed: Marked as regression because 3.7012691194029848 > 3.5771690629452064.
IsChangePoint: Marked as a change because one of 9/1/2022 8:04:48 PM, 10/25/2022 8:17:52 AM, 11/1/2022 2:33:16 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 2:33:16 AM.
IsRegressionStdDev: Marked as regression because -25.241653881229652 (T) = (0 -3718435.170589457) / Math.Sqrt((2548032015.219848 / (19)) + (698574163.7329098 / (32))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (32) - 2, .025) and -0.09261932283453321 = (3403230.28604591 - 3718435.170589457) / 3403230.28604591 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Deep.WriteDeepUtf16(Formatted: False, SkipValidation: False)

```log

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.
IsRegressionWindowed: Marked as regression because 3.9698673566137566 > 3.7799297045797102.
IsChangePoint: Marked as a change because one of 8/30/2022 6:17:03 PM, 10/25/2022 8:17:52 AM, 11/1/2022 2:33:16 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 2:33:16 AM.
IsRegressionStdDev: Marked as regression because -24.59061266652544 (T) = (0 -3931803.106452499) / Math.Sqrt((2622636185.9814215 / (18)) + (965845601.9311386 / (32))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (18) + (32) - 2, .025) and -0.09044745337023316 = (3605678.6544830943 - 3931803.106452499) / 3605678.6544830943 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.
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	x64
OS	ubuntu 18.04
Baseline	5108757b997c59ab8ba1fc5309ab0d4e730e2b77
Compare	f4b715f1cfadcbf85486f369724528c051be5733
Diff	Diff

Regressions in System.Text.Json.Tests.Perf_Basic

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
WriteBasicUtf16 - Duration of single invocation	524.71 ns	564.91 ns	1.08	0.01	False
WriteBasicUtf16 - Duration of single invocation	568.75 ns	602.52 ns	1.06	0.01	False
WriteBasicUtf16 - Duration of single invocation	622.51 ns	656.97 ns	1.06	0.02	False
WriteBasicUtf16 - Duration of single invocation	655.82 ns	699.62 ns	1.07	0.01	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.Json.Tests.Perf_Basic*'

Related Issues

Regressions

Improvements

Details

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: False, SkipValidation: True, DataSize: 10)

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.
IsRegressionWindowed: Marked as regression because 564.913426473831 > 552.2877275058948.
IsChangePoint: Marked as a change because one of 8/30/2022 6:17:03 PM, 10/25/2022 8:17:52 AM, 11/1/2022 2:33:16 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 2:33:16 AM.
IsRegressionStdDev: Marked as regression because -111.20795185811622 (T) = (0 -564.5294758586147) / Math.Sqrt((0.574146619485639 / (19)) + (2.824872289171864 / (32))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (32) - 2, .025) and -0.07274383263309499 = (526.2481672562528 - 564.5294758586147) / 526.2481672562528 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: False, SkipValidation: False, DataSize: 10)

```log

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.
IsRegressionWindowed: Marked as regression because 602.5196316790704 > 596.4717014989104.
IsChangePoint: Marked as a change because one of 8/30/2022 6:17:03 PM, 10/25/2022 8:17:52 AM, 11/1/2022 2:33:16 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 2:33:16 AM.
IsRegressionStdDev: Marked as regression because -45.84598308331923 (T) = (0 -601.9742803277488) / Math.Sqrt((3.4087175580580213 / (19)) + (10.703707714688223 / (32))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (32) - 2, .025) and -0.05774893987689856 = (569.1088476985918 - 601.9742803277488) / 569.1088476985918 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: True, SkipValidation: True, DataSize: 10)

```log

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.
IsRegressionWindowed: Marked as regression because 656.9741530259505 > 654.695848473003.
IsChangePoint: Marked as a change because one of 10/25/2022 8:17:52 AM, 11/1/2022 2:33:16 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 2:33:16 AM.
IsRegressionStdDev: Marked as regression because -18.560602735184723 (T) = (0 -661.3095496292591) / Math.Sqrt((1.823946258378309 / (19)) + (129.77758124716547 / (32))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (32) - 2, .025) and -0.060654966745831866 = (623.4916823688724 - 661.3095496292591) / 623.4916823688724 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Basic.WriteBasicUtf16(Formatted: True, SkipValidation: False, DataSize: 10)

```log

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.
IsRegressionWindowed: Marked as regression because 699.6189843739982 > 690.3751567715309.
IsChangePoint: Marked as a change because one of 10/25/2022 8:17:52 AM, 11/1/2022 2:33:16 AM falls between 10/23/2022 1:14:54 PM and 11/1/2022 2:33:16 AM.
IsRegressionStdDev: Marked as regression because -20.590457728192366 (T) = (0 -696.0610635817284) / Math.Sqrt((6.432776472235719 / (19)) + (95.46031647417387 / (32))) is less than -2.0095752371279447 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (32) - 2, .025) and -0.05698600837296014 = (658.5338481946314 - 696.0610635817284) / 658.5338481946314 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.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

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