[Perf] Windows/x86: 3 Improvements on 11/2/2022 4:25:40 PM

[performanceautofiler]

Run Information

Architecture	x86
OS	Windows 10.0.18362
Baseline	d3a3eda6f4660e85f7a603b624b43993529be377
Compare	fbc20578253e0deb7267eea5a02b680c3cfe0e2a
Diff	Diff

Improvements in System.Linq.Tests.Perf_Enumerable

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
WhereFirst_LastElementMatches - Duration of single invocation	385.47 ns	327.48 ns	0.85	0.04	False
WhereAny_LastElementMatches - Duration of single invocation	775.17 ns	714.29 ns	0.92	0.02	False
WhereLast_LastElementMatches - Duration of single invocation	388.99 ns	328.30 ns	0.84	0.04	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Linq.Tests.Perf_Enumerable*'

Related Issues

Regressions

• [Perf] Windows/x86: 30 Regressions on 11/2/2022 4:25:40 PM
• [Perf] Linux/x64: 15 Regressions on 11/2/2022 4:25:40 PM
• [Perf] Alpine/x64: 18 Regressions on 11/2/2022 4:25:40 PM

Improvements

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.Linq.Tests.Perf_Enumerable.WhereFirst_LastElementMatches(input: Array)

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 327.4788464436407 < 366.20017006991185.
IsChangePoint: Marked as a change because one of 9/15/2022 1:09:14 PM, 9/29/2022 7:42:19 AM, 10/2/2022 11:57:04 PM, 10/19/2022 7:27:15 PM, 10/26/2022 7:11:30 AM, 11/2/2022 4:14:20 AM, 11/8/2022 2:29:58 AM falls between 10/29/2022 4:38:27 PM and 11/8/2022 2:29:58 AM.
IsImprovementStdDev: Marked as improvement because 20.400820476195758 (T) = (0 -325.98069990994117) / Math.Sqrt((877.69081957591 / (299)) + (0.6420801340980747 / (19))) is greater than 1.9674995188240387 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (19) - 2, .975) and 0.09734189935632294 = (361.1341876591894 - 325.98069990994117) / 361.1341876591894 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: IEnumerable)

```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 714.2911398106595 < 734.8575034017489.
IsChangePoint: Marked as a change because one of 9/23/2022 1:16:35 AM, 10/3/2022 4:48:37 PM, 10/10/2022 3:36:43 PM, 11/2/2022 4:14:20 AM, 11/8/2022 2:29:58 AM falls between 10/29/2022 4:38:27 PM and 11/8/2022 2:29:58 AM.
IsImprovementStdDev: Marked as improvement because 18.00250151016387 (T) = (0 -715.2882476360071) / Math.Sqrt((1335.2785949042845 / (299)) + (6.01761516738293 / (19))) is greater than 1.9674995188240387 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (19) - 2, .975) and 0.05216889446381214 = (754.6579168567893 - 715.2882476360071) / 754.6579168567893 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Linq.Tests.Perf_Enumerable.WhereLast_LastElementMatches(input: Array)

```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 328.3009221145659 < 369.48626728418003.
IsChangePoint: Marked as a change because one of 9/15/2022 1:09:14 PM, 10/2/2022 11:57:04 PM, 10/19/2022 7:27:15 PM, 10/26/2022 7:11:30 AM, 11/2/2022 4:14:20 AM, 11/8/2022 2:29:58 AM falls between 10/29/2022 4:38:27 PM and 11/8/2022 2:29:58 AM.
IsImprovementStdDev: Marked as improvement because 19.44765284685835 (T) = (0 -328.613406733421) / Math.Sqrt((908.2818068085915 / (299)) + (1.0600665908367282 / (19))) is greater than 1.9674995188240387 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (19) - 2, .975) and 0.09427667694744835 = (362.8187531109368 - 328.613406733421) / 362.8187531109368 is greater than 0.05.
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