[Perf] Linux/x64: 3 Regressions on 10/17/2022 3:19:47 PM

[performanceautofiler]

Run Information

Architecture	x64
OS	ubuntu 18.04
Baseline	6dc9a74481888a13573d90424d06484bbf425b4a
Compare	3ba1dd21d91ddbe97dc571e45dc608610660c4f3
Diff	Diff

Regressions in System.Text.Json.Serialization.Tests.ColdStartSerialization<SimpleStructWithProperties>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
NewDefaultOptions - Duration of single invocation	40.55 μs	47.20 μs	1.16	0.01	False
NewCachedCustomConverter - Duration of single invocation	50.06 μs	55.26 μs	1.10	0.01	False
NewCustomizedOptions - Duration of single invocation	48.00 μs	53.77 μs	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.Serialization.Tests.ColdStartSerialization<SimpleStructWithProperties>*'

Related Issues

Regressions

• [Perf] Windows/x64: 3 Regressions on 10/17/2022 3:19:47 PM
• [Perf] Windows/x64: 2 Regressions on 10/17/2022 3:19:47 PM
• [Perf] Windows/x86: 1 Regression on 10/17/2022 3:19:47 PM

Improvements

• [Perf] Windows/x86: 2 Improvements on 10/17/2022 3:19:47 PM

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.Text.Json.Serialization.Tests.ColdStartSerialization<SimpleStructWithProperties>.NewDefaultOptions

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 47.195356262550206 > 42.52726250243507.
IsChangePoint: Marked as a change because one of 10/6/2022 12:41:43 AM, 10/17/2022 12:47:34 PM, 10/25/2022 8:17:52 AM falls between 10/16/2022 1:15:28 PM and 10/25/2022 8:17:52 AM.
IsRegressionStdDev: Marked as regression because -72.64660634080485 (T) = (0 -47347.320810676574) / Math.Sqrt((44330.82566612571 / (15)) + (174775.89094378593 / (29))) is less than -2.0180817028167235 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (15) + (29) - 2, .025) and -0.17015893716837666 = (40462.29901491037 - 47347.320810676574) / 40462.29901491037 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.Serialization.Tests.ColdStartSerialization<SimpleStructWithProperties>.NewCachedCustomConverter

```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 55.25684734049314 > 52.22794247551497.
IsChangePoint: Marked as a change because one of 10/6/2022 12:41:43 AM, 10/17/2022 12:47:34 PM, 10/25/2022 8:17:52 AM falls between 10/16/2022 1:15:28 PM and 10/25/2022 8:17:52 AM.
IsRegressionStdDev: Marked as regression because -48.87951215137908 (T) = (0 -55296.492607043714) / Math.Sqrt((81018.99696762237 / (14)) + (222621.616730214 / (29))) is less than -2.019540970439573 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (14) + (29) - 2, .025) and -0.11429033632478773 = (49624.85162477993 - 55296.492607043714) / 49624.85162477993 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.Serialization.Tests.ColdStartSerialization<SimpleStructWithProperties>.NewCustomizedOptions

```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 53.76983099942726 > 50.27785346319281.
IsChangePoint: Marked as a change because one of 10/6/2022 12:41:43 AM, 10/17/2022 12:47:34 PM, 10/25/2022 8:17:52 AM falls between 10/16/2022 1:15:28 PM and 10/25/2022 8:17:52 AM.
IsRegressionStdDev: Marked as regression because -51.877665914827055 (T) = (0 -53933.22996125165) / Math.Sqrt((111712.93352331268 / (15)) + (175345.1021053672 / (29))) is less than -2.0180817028167235 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (15) + (29) - 2, .025) and -0.12579136949602 = (47906.949211554 - 53933.22996125165) / 47906.949211554 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

[radekdoulik]

This is caused by dotnet/runtime#76607. @eiriktsarpalis please take a look. I see it is also causing regressions on window/intel measurements.

[eiriktsarpalis]

I believe it's actually caused by dotnet/runtime#76782 and is a duplicate of dotnet/runtime#77279 and #9056. We can close this as by-design.

I don't have permissions in this repo to close it myself, unfortunately.

[radekdoulik]

Indeed dotnet/runtime#76782. Thanks for looking into that.