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[Perf] Linux/arm64: 3 Regressions on 10/18/2022 8:25:03 PM #9254

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performanceautofiler bot opened this issue Oct 27, 2022 · 1 comment
Closed

[Perf] Linux/arm64: 3 Regressions on 10/18/2022 8:25:03 PM #9254

performanceautofiler bot opened this issue Oct 27, 2022 · 1 comment
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ampere arch-arm64 branch-refs/heads/main kind-micro Look Again os-linux perf-regression runtime-coreclr

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performanceautofiler bot commented Oct 27, 2022 •
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Run Information

Architecture arm64
OS ubuntu 20.04
Baseline 8393c4eb74afecaa70267b2a94b9b94c1d1ae384
Compare 51e3afb2ba42609c3711cb50fb5eaa6800bc1fde
Diff Diff

Regressions in System.Buffers.Tests.ReadOnlySequenceTests<Char>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
FirstArray - Duration of single invocation 6.76 ns 10.45 ns 1.55 0.13 False

graph
Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Buffers.Tests.ReadOnlySequenceTests&lt;Char&gt;*'

Related Issues

Regressions

Improvements

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.Buffers.Tests.ReadOnlySequenceTests<Char>.FirstArray

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 10.449783529065854 > 6.937460931085692.
IsChangePoint: Marked as a change because one of 9/20/2022 10:35:57 PM, 10/18/2022 9:26:37 AM, 10/27/2022 12:34:03 AM falls between 10/18/2022 9:26:37 AM and 10/27/2022 12:34:03 AM.
IsRegressionStdDev: Marked as regression because -8.291972286177018 (T) = (0 -7.581709107824682) / Math.Sqrt((0.03173469545004453 / (8)) + (0.3055529557434838 / (30))) is less than -2.028094000977961 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (8) + (30) - 2, .025) and -0.14956587148076542 = (6.595280267026907 - 7.581709107824682) / 6.595280267026907 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 arm64
OS ubuntu 20.04
Baseline 8393c4eb74afecaa70267b2a94b9b94c1d1ae384
Compare 51e3afb2ba42609c3711cb50fb5eaa6800bc1fde
Diff Diff

Regressions in System.Buffers.Tests.ReadOnlySequenceTests<Byte>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
FirstArray - Duration of single invocation 6.80 ns 7.93 ns 1.17 0.13 False
FirstMemory - Duration of single invocation 7.53 ns 9.25 ns 1.23 0.29 False

graph
graph
Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Buffers.Tests.ReadOnlySequenceTests&lt;Byte&gt;*'

Related Issues

Regressions

Improvements

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.Buffers.Tests.ReadOnlySequenceTests<Byte>.FirstArray

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 7.930853849994999 > 7.002232331088513.
IsChangePoint: Marked as a change because one of 9/20/2022 10:35:57 PM, 10/18/2022 9:26:37 AM, 10/27/2022 12:34:03 AM falls between 10/18/2022 9:26:37 AM and 10/27/2022 12:34:03 AM.
IsRegressionStdDev: Marked as regression because -10.114604517455748 (T) = (0 -7.956033613579493) / Math.Sqrt((0.03322992213777975 / (8)) + (0.4283467847758724 / (30))) is less than -2.028094000977961 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (8) + (30) - 2, .025) and -0.20860372595600374 = (6.582830619098317 - 7.956033613579493) / 6.582830619098317 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.Buffers.Tests.ReadOnlySequenceTests&lt;Byte&gt;.FirstMemory

```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 9.246127734941188 > 7.799803101978111.
IsChangePoint: Marked as a change because one of 9/20/2022 10:35:57 PM, 10/18/2022 9:26:37 AM, 10/27/2022 12:34:03 AM falls between 10/18/2022 9:26:37 AM and 10/27/2022 12:34:03 AM.
IsRegressionStdDev: Marked as regression because -10.245124804257635 (T) = (0 -8.811278168422037) / Math.Sqrt((0.09799038612537629 / (8)) + (0.08681116323989523 / (30))) is less than -2.028094000977961 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (8) + (30) - 2, .025) and -0.16696929560644444 = (7.550565556091207 - 8.811278168422037) / 7.550565556091207 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
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