[Perf] Regressions in System.Collections.TryGetValueFalse<Int32, Int32> #63745
Description
Run Information
| Architecture | x64 |
|---|---|
| OS | Windows 10.0.19042 |
| Baseline | be609c3417923404ef3125426cd5f442ed91fd38 |
| Compare | c8ede5c4b1aba85fc894d5faed42d6d5186eabe1 |
| Diff | Diff |
Regressions in System.Collections.TryGetValueFalse<Int32, Int32>
| Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL |
|---|---|---|---|---|---|---|---|---|---|---|
| Dictionary - Duration of single invocation | 2.78 μs | 4.94 μs | 1.78 | 0.13 | True |
Repro
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Collections.TryGetValueFalse<Int32, Int32>*'Details
Payloads
Histogram
System.Collections.TryGetValueFalse<Int32, Int32>.Dictionary(Size: 512)
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 4.941567345707538 > 2.9018606079280462.
IsChangePoint: Marked as a change because one of 12/7/2021 2:32:08 PM, 1/5/2022 4:19:16 PM falls between 12/6/2021 2:46:54 PM and 1/5/2022 4:19:16 PM.
IsRegressionStdDev: Marked as regression because -114.3537974402066 (T) = (0 -4871.091473564835) / Math.Sqrt((4769.861900921713 / (18)) + (12205.738984562271 / (148))) is less than -1.974534575858283 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (18) + (148) - 2, .025) and -0.7780990150558209 = (2739.4939383687324 - 4871.091473564835) / 2739.4939383687324 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 as regression because Edge Detector said so.
Docs
Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository
category:performance
theme:benchmarks
skill-level:intermediate
cost:medium
impact:small