[Perf] Changes at 6/17/2022 9:02:07 PM

[performanceautofiler]

Run Information

Architecture	arm64
OS	ubuntu 18.04
Baseline	10438a57b888cbdc6dc15771dc662adde9fd6b14
Compare	4abfe7c1c565eb1d8695dfce94b1b61782712596
Diff	Diff

Improvements in System.Text.Json.Tests.Perf_Base64

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
WriteByteArrayAsBase64_NoEscaping - Duration of single invocation	392.08 ns	244.89 ns	0.62	0.50	False
WriteByteArrayAsBase64_NoEscaping - Duration of single invocation	1.54 μs	937.02 ns	0.61	0.41	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_Base64*'

Payloads

Baseline
Compare

Histogram

System.Text.Json.Tests.Perf_Base64.WriteByteArrayAsBase64_NoEscaping(NumberOfBytes: 100)

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 244.89427240309348 < 320.1998286671643.
IsChangePoint: Marked as a change because one of 6/17/2022 2:19:07 PM, 6/23/2022 3:07:42 AM falls between 6/14/2022 10:05:19 AM and 6/23/2022 3:07:42 AM.
IsImprovementStdDev: Marked as improvement because 11.746756834011135 (T) = (0 -267.1635271647981) / Math.Sqrt((2726.5387248026027 / (275)) + (1179.18345776806 / (22))) is greater than 1.9680381148904758 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (275) + (22) - 2, .975) and 0.25948363744728237 = (360.7800457559486 - 267.1635271647981) / 360.7800457559486 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Tests.Perf_Base64.WriteByteArrayAsBase64_NoEscaping(NumberOfBytes: 1000)

```log

Description of detection logic

IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsRegressionBase: Marked as not a regression because the compare was not 5% greater than the baseline, or the value was too small.
IsImprovementBase: Marked as improvement because the compare was 5% less than the baseline, and the value was not too small.
IsImprovementCheck: Marked as improvement because the three check build points were 0.05 less than the baseline.
IsImprovementWindowed:Marked as improvement because 937.0216786800994 < 1.4559390312701888.
IsChangePoint: Marked as a change because one of 5/12/2022 12:13:09 PM, 6/20/2022 12:28:47 PM, 6/23/2022 3:07:42 AM falls between 6/14/2022 10:05:19 AM and 6/23/2022 3:07:42 AM.
IsImprovementStdDev: Marked as improvement because 32.034305867532005 (T) = (0 -958.926959650865) / Math.Sqrt((311588.88075543864 / (286)) + (368.2041540986261 / (10))) is greater than 1.9680656892939519 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (286) + (10) - 2, .975) and 0.528552786749693 = (2034.0070589021357 - 958.926959650865) / 2034.0070589021357 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

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