[Perf] Changes at 1/25/2022 6:54:35 PM

[performanceautofiler]

Run Information

Architecture	x86
OS	Windows 10.0.18362
Baseline	802dc689fdcca6e52e17604048465a50203371b1
Compare	33940e671a16ca558cc9d145369e16fd0ae2132e
Diff	Diff

Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Count - Duration of single invocation	68.37 μs	109.53 μs	1.60	0.02	True
Count - Duration of single invocation	33.69 μs	98.41 μs	2.92	0.15	True

Test Report

Repro

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

Details

Payloads

Baseline
Compare

Histogram

System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "Sherlock\s+Holmes", Options: Compiled)

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 109.53156896551727 > 71.78592555377142.
IsChangePoint: Marked as a change because one of 1/25/2022 4:50:09 PM, 2/1/2022 5:51:01 AM falls between 1/23/2022 2:39:24 PM and 2/1/2022 5:51:01 AM.
IsRegressionStdDev: Marked as regression because -88.93901185921992 (T) = (0 -107170.58338705185) / Math.Sqrt((613302.9515671569 / (34)) + (7758926.64267049 / (44))) is less than -1.9916726096441384 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (34) + (44) - 2, .025) and -0.5769908920659217 = (67958.91081314621 - 107170.58338705185) / 67958.91081314621 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.

```#### System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "zqj", Options: Compiled)

```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.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 98.40935138081396 > 35.80911302171416.
IsChangePoint: Marked as a change because one of 1/25/2022 4:50:09 PM, 2/1/2022 5:51:01 AM falls between 1/23/2022 2:39:24 PM and 2/1/2022 5:51:01 AM.
IsRegressionStdDev: Marked as regression because -177.22774809445417 (T) = (0 -97046.48137942483) / Math.Sqrt((312493.98475581314 / (34)) + (5194614.120161941 / (44))) is less than -1.9916726096441384 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (34) + (44) - 2, .025) and -1.8690341993382276 = (33825.48782507006 - 97046.48137942483) / 33825.48782507006 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

[kunalspathak]

The regression was introduced in dotnet/runtime#63285 and improved slightly from dotnet/runtime#64872. @EgorBo