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[Perf] Linux/x64: 17 Regressions on 11/15/2022 9:22:46 AM #78836

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performanceautofiler bot opened this issue Nov 22, 2022 · 4 comments
Closed

[Perf] Linux/x64: 17 Regressions on 11/15/2022 9:22:46 AM #78836

performanceautofiler bot opened this issue Nov 22, 2022 · 4 comments
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@kg @kotlarmilos
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arch-x64 area-Codegen-meta-mono os-linux Linux OS (any supported distro)

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Run Information

Architecture x64
OS ubuntu 18.04
Baseline 2934824d2aa45ab6d558040f27de0d0027872353
Compare 49ac27fee1db18965687205d95eba34552329e53
Diff Diff

Regressions in System.Tests.Perf_String

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
Replace_Char - Duration of single invocation 10.13 μs 99.58 μs 9.83 0.08 False
IndexerCheckPathLength - Duration of single invocation 1.04 μs 1.34 μs 1.29 0.30 False
IndexerCheckBoundCheckHoist - Duration of single invocation 375.57 ns 419.34 ns 1.12 0.05 False
ToUpper - Duration of single invocation 142.95 ns 156.62 ns 1.10 0.26 False
TrimEnd_CharArr - Duration of single invocation 68.76 ns 72.58 ns 1.06 0.20 False
Replace_String - Duration of single invocation 972.01 ns 6.26 μs 6.44 0.09 False
Concat_CharEnumerable - Duration of single invocation 71.45 μs 78.43 μs 1.10 0.08 False
TrimEnd - Duration of single invocation 74.10 ns 83.42 ns 1.13 0.16 False
Replace_Char - Duration of single invocation 1.17 μs 8.83 μs 7.54 0.09 False
Trim - Duration of single invocation 128.83 ns 138.45 ns 1.07 0.14 False
Replace_Char - Duration of single invocation 496.32 ns 3.17 μs 6.38 0.08 False
ToLower - Duration of single invocation 144.63 ns 156.39 ns 1.08 0.24 False
TrimStart - Duration of single invocation 74.30 ns 82.52 ns 1.11 0.13 False
ToUpperInvariant - Duration of single invocation 99.14 ns 118.06 ns 1.19 0.20 False
Join_List - Duration of single invocation 972.12 ns 1.04 μs 1.07 0.08 False
IndexerCheckLengthHoisting - Duration of single invocation 500.60 ns 536.75 ns 1.07 0.06 False
Replace_Char - Duration of single invocation 260.17 ns 595.79 ns 2.29 0.12 False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_String*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_String.Replace_Char(text: "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", oldChar: 'b', newChar: '+')

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 99.58005127190846 > 10.67417647614597.
IsChangePoint: Marked as a change because one of 11/9/2022 12:33:05 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -194.67812561581346 (T) = (0 -101303.91479928802) / Math.Sqrt((264719.2281439457 / (15)) + (6222778.465073354 / (31))) is less than -2.0153675744421933 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (15) + (31) - 2, .025) and -8.808642916914053 = (10328.025564535461 - 101303.91479928802) / 10328.025564535461 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.

```#### System.Tests.Perf_String.IndexerCheckPathLength

```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 1.3422754700224082 > 1.084160256788229.
IsChangePoint: Marked as a change because one of 9/29/2022 7:42:19 AM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -19.25819365574877 (T) = (0 -1279.7127627384323) / Math.Sqrt((1903.2718479759237 / (19)) + (1225.7370097770847 / (28))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (28) - 2, .025) and -0.22033638327871058 = (1048.6557479341832 - 1279.7127627384323) / 1048.6557479341832 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.

```#### System.Tests.Perf_String.IndexerCheckBoundCheckHoist

```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 419.342907392261 > 394.28672662017783.
IsChangePoint: Marked as a change because one of 8/1/2022 7:13:37 AM, 10/14/2022 1:19:37 PM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -8.279870339011776 (T) = (0 -426.42759419135456) / Math.Sqrt((352.2624559207406 / (19)) + (362.10202968651 / (28))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (28) - 2, .025) and -0.12224479748448132 = (379.97734108208357 - 426.42759419135456) / 379.97734108208357 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.

```#### System.Tests.Perf_String.ToUpper(s: "TEST")

```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 156.62001572255903 > 151.1223991704316.
IsChangePoint: Marked as a change because one of 8/1/2022 7:13:37 AM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -11.62232424940867 (T) = (0 -161.41866650942592) / Math.Sqrt((21.767101138575992 / (19)) + (22.66659517895155 / (28))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (28) - 2, .025) and -0.1119475180369332 = (145.16752264926987 - 161.41866650942592) / 145.16752264926987 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.

```#### System.Tests.Perf_String.TrimEnd_CharArr(s: "Test", c: [' ', ' '])

```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 72.58194489545915 > 72.39367853433498.
IsChangePoint: Marked as a change because one of 10/5/2022 7:15:47 PM, 11/15/2022 5:29:43 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -9.440358162863966 (T) = (0 -73.60797035532566) / Math.Sqrt((2.357813805193445 / (18)) + (0.7000413355290108 / (29))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (18) + (29) - 2, .025) and -0.05320120765323904 = (69.88975118946189 - 73.60797035532566) / 69.88975118946189 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.

```#### System.Tests.Perf_String.Replace_String(text: "This is a very nice sentence. This is another very nice sentence.", oldValue: "a", newValue: "b")

```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 6.263772215958685 > 929.3563637504495.
IsChangePoint: Marked as a change because one of 11/9/2022 12:33:05 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -157.4967741204061 (T) = (0 -6320.275262121558) / Math.Sqrt((542.1034205944877 / (15)) + (36852.763501536596 / (32))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (15) + (32) - 2, .025) and -6.083472322887598 = (892.2566467437088 - 6320.275262121558) / 892.2566467437088 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.

```#### System.Tests.Perf_String.Concat_CharEnumerable

```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 78.4319635568513 > 75.27238762625706.
IsChangePoint: Marked as a change because one of 9/28/2022 6:40:13 PM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -19.900171760169364 (T) = (0 -78348.71946139235) / Math.Sqrt((1206234.259994439 / (19)) + (1124833.320701066 / (28))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (28) - 2, .025) and -0.08905927990361262 = (71941.648087629 - 78348.71946139235) / 71941.648087629 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.

```#### System.Tests.Perf_String.TrimEnd(s: "Test")

```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 83.42475130392897 > 79.14284015135897.
IsChangePoint: Marked as a change because one of 10/11/2022 6:23:40 AM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -20.38524684269455 (T) = (0 -84.37725744982471) / Math.Sqrt((1.3187034913236235 / (19)) + (3.9185567710656337 / (28))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (28) - 2, .025) and -0.12428139657640772 = (75.04994542003908 - 84.37725744982471) / 75.04994542003908 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.

```#### System.Tests.Perf_String.Replace_Char(text: "yfesgj0sg1ijslnjsb3uofdz3tbzf6ysgblu3at20nfab2wei1kxfbvsbpzwhanjczcqa2psra3aacxb67qnwbnfp2tok6v0a58l", oldChar: 'b', newChar: '+')

```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 8.832900972965914 > 1.2291391821848725.
IsChangePoint: Marked as a change because one of 11/9/2022 12:33:05 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -126.3317138600444 (T) = (0 -9055.158227413513) / Math.Sqrt((201.06945215607075 / (15)) + (124056.60837460245 / (32))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (15) + (32) - 2, .025) and -6.701991532935071 = (1175.6904936459698 - 9055.158227413513) / 1175.6904936459698 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.

```#### System.Tests.Perf_String.Trim(s: "Test")

```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 138.45372236973932 > 134.9279044815784.
IsChangePoint: Marked as a change because one of 9/28/2022 11:19:50 AM, 10/22/2022 11:45:45 AM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -14.707443018121031 (T) = (0 -139.48827045059056) / Math.Sqrt((3.701843206453089 / (19)) + (12.583401020081338 / (28))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (28) - 2, .025) and -0.09245426272232707 = (127.68339619362608 - 139.48827045059056) / 127.68339619362608 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.

```#### System.Tests.Perf_String.Replace_Char(text: "This is a very nice sentence", oldChar: 'i', newChar: 'I')

```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 3.1657902770282096 > 521.5788219295952.
IsChangePoint: Marked as a change because one of 11/9/2022 12:33:05 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -171.36176966641275 (T) = (0 -3011.7422125647963) / Math.Sqrt((25.180152137540315 / (15)) + (6827.388613924701 / (32))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (15) + (32) - 2, .025) and -5.036965750800204 = (498.8834353028403 - 3011.7422125647963) / 498.8834353028403 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.

```#### System.Tests.Perf_String.ToLower(s: "test")

```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 156.3900214346038 > 147.17527132040323.
IsChangePoint: Marked as a change because one of 7/30/2022 2:52:48 AM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -5.590009048187572 (T) = (0 -158.59469563968793) / Math.Sqrt((67.31341277245332 / (19)) + (21.74720481540712 / (27))) is less than -2.0153675744421933 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (27) - 2, .025) and -0.07932971622717093 = (146.93813508077994 - 158.59469563968793) / 146.93813508077994 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.

```#### System.Tests.Perf_String.TrimStart(s: "Test")

```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 82.52112576884328 > 78.47278330362792.
IsChangePoint: Marked as a change because one of 10/11/2022 6:23:40 AM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -13.60302349793907 (T) = (0 -85.5690556683772) / Math.Sqrt((1.0138300443898354 / (19)) + (14.489652259739751 / (28))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (28) - 2, .025) and -0.13650549424482275 = (75.29136999485914 - 85.5690556683772) / 75.29136999485914 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.

```#### System.Tests.Perf_String.ToUpperInvariant(s: "TEST")

```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 118.05517157793139 > 105.19524600636889.
IsChangePoint: Marked as a change because one of 8/1/2022 8:26:50 AM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -17.86934630561687 (T) = (0 -110.66245928605149) / Math.Sqrt((1.5518129633317816 / (19)) + (6.542411290204867 / (28))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (28) - 2, .025) and -0.09971802136369748 = (100.62803112822075 - 110.66245928605149) / 100.62803112822075 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.

```#### System.Tests.Perf_String.Join_List

```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 1.0371449702300375 > 1026.560830616343.
IsChangePoint: Marked as a change because one of 10/11/2022 6:23:40 AM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -12.483940137441362 (T) = (0 -1049.2907133309402) / Math.Sqrt((222.18501684987444 / (19)) + (464.4773182582688 / (28))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (28) - 2, .025) and -0.0675461866105876 = (982.8995939392489 - 1049.2907133309402) / 982.8995939392489 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.

```#### System.Tests.Perf_String.IndexerCheckLengthHoisting

```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 536.7493130253337 > 524.4210145307741.
IsChangePoint: Marked as a change because one of 8/1/2022 7:13:37 AM, 11/15/2022 8:48:03 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -7.7588202787484635 (T) = (0 -538.1998132477444) / Math.Sqrt((350.5050472661957 / (19)) + (41.77987754151241 / (28))) is less than -2.0141033888794695 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (28) - 2, .025) and -0.06880342984718572 = (503.5535985552503 - 538.1998132477444) / 503.5535985552503 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.

```#### System.Tests.Perf_String.Replace_Char(text: "Hello", oldChar: 'l', newChar: '!')

```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 595.7926932343299 > 268.05974386406604.
IsChangePoint: Marked as a change because one of 11/9/2022 12:33:05 PM, 11/22/2022 2:20:42 AM falls between 11/9/2022 12:33:05 PM and 11/22/2022 2:20:42 AM.
IsRegressionStdDev: Marked as regression because -116.79208239355299 (T) = (0 -585.8381006934882) / Math.Sqrt((24.25060747151552 / (15)) + (197.6512807913865 / (31))) is less than -2.0153675744421933 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (15) + (31) - 2, .025) and -1.2915276316003732 = (255.65395442530468 - 585.8381006934882) / 255.65395442530468 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.

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@performanceautofiler performanceautofiler bot added refs/heads/main untriaged New issue has not been triaged by the area owner labels Nov 22, 2022
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Decent regression, investigation needed

@kotlarmilos kotlarmilos removed the untriaged New issue has not been triaged by the area owner label Nov 23, 2022
@kotlarmilos kotlarmilos mentioned this issue Nov 23, 2022
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@kotlarmilos kotlarmilos self-assigned this Nov 24, 2022
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@kg regression in ce58915. Do you have any ideas what caused regressions?

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I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

@kotlarmilos kotlarmilos transferred this issue from dotnet/perf-autofiling-issues Nov 24, 2022
@ghost ghost added the untriaged New issue has not been triaged by the area owner label Nov 24, 2022
@kotlarmilos kotlarmilos removed the untriaged New issue has not been triaged by the area owner label Nov 24, 2022
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Fixed by 5a7d46b

@jeffhandley jeffhandley added os-linux Linux OS (any supported distro) arch-x64 and removed refs/heads/main labels Dec 28, 2022
@ghost ghost locked as resolved and limited conversation to collaborators Jan 27, 2023
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