Repository navigation
Regressions in System.Net.Tests.Perf_WebUtility on arm64 #84787
Description
Run Information
| Name | Value |
|---|---|
| Architecture | arm64 |
| OS | ubuntu 20.04 |
| Queue | AmpereUbuntu |
| Baseline | 7b651743dc951384f6c3d8455c88518022c7c3b9 |
| Compare | b0b7aaefb88aa8d01b3d64fb40ac2f73a9d98c3e |
| Diff | Diff |
| Configs | CompilationMode:tiered, RunKind:micro |
Regressions in System.Net.Tests.Perf_WebUtility
| Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL |
|---|---|---|---|---|---|---|---|---|---|---|
| Decode_NoDecodingRequired - Duration of single invocation | 80.17 ns | 87.66 ns | 1.09 | 0.09 | False |
Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md
Payloads
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Net.Tests.Perf_WebUtility*'Details
Payloads
Histogram
System.Net.Tests.Perf_WebUtility.Decode_NoDecodingRequired
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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 87.65567056152061 > 84.72435361342947.
IsChangePoint: Marked as a change because one of 3/21/2023 2:53:21 PM, 3/23/2023 3:52:33 AM falls between 3/14/2023 3:18:57 PM and 3/23/2023 3:52:33 AM.
IsRegressionStdDev: Marked as regression because -17.95135109670125 (T) = (0 -88.01258049891231) / Math.Sqrt((2.5000512794458047 / (33)) + (0.2977841763370414 / (4))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (33) + (4) - 2, .025) and -0.08583376758709343 = (81.05529881842888 - 88.01258049891231) / 81.05529881842888 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.
Docs
Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository
Run Information
| Name | Value |
|---|---|
| Architecture | arm64 |
| OS | ubuntu 20.04 |
| Queue | AmpereUbuntu |
| Baseline | 7b651743dc951384f6c3d8455c88518022c7c3b9 |
| Compare | b0b7aaefb88aa8d01b3d64fb40ac2f73a9d98c3e |
| Diff | Diff |
| Configs | CompilationMode:tiered, RunKind:micro |
Activity
AndyAyersMS commentedon Apr 1, 2023
Regression in System.Net.Tests.Perf_WebUtility has persisted. However given its history we should wait a bit longer.
Implicated changes:
AndyAyersMS commentedon Apr 13, 2023
Still looks like a real regression. Will transfer this one.
[-][Perf] Linux/arm64: 2 Regressions on 3/21/2023 8:47:40 PM[/-][+]Regressions in System.Net.Tests.Perf_WebUtility on arm64[/+]AndyAyersMS commentedon Jun 1, 2023
Fixed by enabling Dynamic PGO