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[Perf] Linux/arm64: 14 Regressions on 12/14/2022 8:02:51 PM #10951

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performanceautofiler bot opened this issue Dec 20, 2022 · 2 comments
Closed

[Perf] Linux/arm64: 14 Regressions on 12/14/2022 8:02:51 PM #10951

performanceautofiler bot opened this issue Dec 20, 2022 · 2 comments
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@BrzVlad
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ampere arch-arm64 branch-refs/heads/main kind-micro_mono LinkedFromMaster Is this issue linked from the master perf issue mono-aot os-linux perf-regression runtime-mono

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performanceautofiler bot commented Dec 20, 2022 •
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Run Information

Architecture arm64
OS ubuntu 20.04
Baseline 322f20cda9673a3872902ed3fb2ddfbcff97c007
Compare df96cdc2419cb79a6f78c14194d790d1cf4c34b6
Diff Diff

Regressions in System.Memory.Span<Byte>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
BinarySearch - Duration of single invocation 30.66 ns 33.95 ns 1.11 0.04 False
IndexOfAnyThreeValues - Duration of single invocation 10.54 ns 14.30 ns 1.36 0.02 False
IndexOfAnyTwoValues - Duration of single invocation 25.15 ns 30.04 ns 1.19 0.06 False
IndexOfValue - Duration of single invocation 19.56 ns 21.24 ns 1.09 0.04 False
IndexOfAnyThreeValues - Duration of single invocation 30.54 ns 39.15 ns 1.28 0.04 False
IndexOfAnyTwoValues - Duration of single invocation 9.87 ns 12.22 ns 1.24 0.06 False
LastIndexOfAnyValues - Duration of single invocation 10.41 ns 12.34 ns 1.19 0.14 False
LastIndexOfAnyValues - Duration of single invocation 25.77 ns 34.68 ns 1.35 0.02 False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Memory.Span&lt;Byte&gt;*'

Payloads

Baseline
Compare

Histogram

System.Memory.Span<Byte>.BinarySearch(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 33.95457853551559 > 32.192421142164655.
IsChangePoint: Marked as a change because one of 11/4/2022 2:24:58 AM, 11/11/2022 5:53:56 PM, 12/10/2022 11:25:25 PM, 12/14/2022 12:01:27 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -16.508792696007287 (T) = (0 -33.906872551077406) / Math.Sqrt((1.7127307115608736 / (22)) + (0.026497881045582764 / (15))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (22) + (15) - 2, .025) and -0.15926303416088045 = (29.24864465778512 - 33.906872551077406) / 29.24864465778512 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.Memory.Span&lt;Byte&gt;.IndexOfAnyThreeValues(Size: 4)

```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 14.297345853081405 > 11.030604657285803.
IsChangePoint: Marked as a change because one of 12/17/2022 10:44:50 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -187.76078829825968 (T) = (0 -14.30586768061221) / Math.Sqrt((0.010897709208742676 / (35)) + (0.00014524308892959454 / (2))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (2) - 2, .025) and -0.3462323663428567 = (10.626596149574976 - 14.30586768061221) / 10.626596149574976 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.Memory.Span&lt;Byte&gt;.IndexOfAnyTwoValues(Size: 33)

```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 30.037648625510403 > 26.34966487460275.
IsChangePoint: Marked as a change because one of 12/17/2022 10:44:50 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -19.508314229954628 (T) = (0 -30.30686384799791) / Math.Sqrt((0.039179100313404505 / (35)) + (0.1449536720379973 / (2))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (2) - 2, .025) and -0.21157057824550532 = (25.014526097097672 - 30.30686384799791) / 25.014526097097672 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.Memory.Span&lt;Byte&gt;.IndexOfValue(Size: 33)

```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 21.24258535352141 > 20.793031894783734.
IsChangePoint: Marked as a change because one of 12/17/2022 10:44:50 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -28.45056378554572 (T) = (0 -21.263047395664906) / Math.Sqrt((0.08913148846162897 / (35)) + (0.0008373903373645586 / (2))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (2) - 2, .025) and -0.07858794230184192 = (19.71378184544405 - 21.263047395664906) / 19.71378184544405 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.Memory.Span&lt;Byte&gt;.IndexOfAnyThreeValues(Size: 33)

```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 39.148690138320305 > 32.01084779478924.
IsChangePoint: Marked as a change because one of 12/17/2022 10:44:50 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -132.3592562061192 (T) = (0 -39.13264865670058) / Math.Sqrt((0.133478134704181 / (35)) + (0.0005146582651118336 / (2))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (2) - 2, .025) and -0.2751959380587636 = (30.687557487261437 - 39.13264865670058) / 30.687557487261437 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.Memory.Span&lt;Byte&gt;.IndexOfAnyTwoValues(Size: 4)

```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 12.21519350611163 > 10.37799452142671.
IsChangePoint: Marked as a change because one of 12/17/2022 10:44:50 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -25.682676900561525 (T) = (0 -12.155820777368866) / Math.Sqrt((0.11065820382349918 / (35)) + (0.0070502418367233794 / (2))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (2) - 2, .025) and -0.2088514990606115 = (10.055677464779631 - 12.155820777368866) / 10.055677464779631 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.Memory.Span&lt;Byte&gt;.LastIndexOfAnyValues(Size: 4)

```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 12.341926380221206 > 10.993912069705747.
IsChangePoint: Marked as a change because one of 12/17/2022 10:44:50 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -24.817990077460603 (T) = (0 -12.414828613388458) / Math.Sqrt((0.012001400773561082 / (35)) + (0.010629471201544423 / (2))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (2) - 2, .025) and -0.17697431526198304 = (10.548087967939248 - 12.414828613388458) / 10.548087967939248 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.Memory.Span&lt;Byte&gt;.LastIndexOfAnyValues(Size: 33)

```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 34.68192923464452 > 26.93016782286992.
IsChangePoint: Marked as a change because one of 12/17/2022 10:44:50 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -152.95038308455764 (T) = (0 -34.705742532356126) / Math.Sqrt((0.10625944365515899 / (35)) + (0.0011341462958027473 / (2))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (35) + (2) - 2, .025) and -0.3596858892993959 = (25.524823641612493 - 34.705742532356126) / 25.524823641612493 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
Architecture arm64
OS ubuntu 20.04
Baseline 322f20cda9673a3872902ed3fb2ddfbcff97c007
Compare df96cdc2419cb79a6f78c14194d790d1cf4c34b6
Diff Diff

Regressions in System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Single>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
MultiplyBenchmark - Duration of single invocation 38.18 ns 40.88 ns 1.07 0.03 False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Runtime.Intrinsics.Tests.Perf_Vector128Of&lt;Single&gt;*'

Payloads

Baseline
Compare

Histogram

System.Runtime.Intrinsics.Tests.Perf_Vector128Of<Single>.MultiplyBenchmark

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 40.88132046408604 > 39.91052728135875.
IsChangePoint: Marked as a change because one of 11/24/2022 8:21:24 PM, 12/14/2022 12:01:27 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -31.824865017829328 (T) = (0 -40.65630219148731) / Math.Sqrt((0.12359378263053958 / (22)) + (0.03979328638487745 / (15))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (22) + (15) - 2, .025) and -0.07664514417216917 = (37.76202624565579 - 40.65630219148731) / 37.76202624565579 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

Architecture arm64
OS ubuntu 20.04
Baseline 322f20cda9673a3872902ed3fb2ddfbcff97c007
Compare df96cdc2419cb79a6f78c14194d790d1cf4c34b6
Diff Diff

Regressions in System.Tests.Perf_Decimal

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
Add - Duration of single invocation 10.11 ns 11.61 ns 1.15 0.09 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_Decimal*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_Decimal.Add

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 11.605502230465683 > 10.682685694844476.
IsChangePoint: Marked as a change because one of 11/2/2022 5:57:48 PM, 11/9/2022 1:54:51 PM, 12/14/2022 12:01:27 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -22.127968808060075 (T) = (0 -11.456738850901536) / Math.Sqrt((0.020325719056435005 / (22)) + (0.030279898389093857 / (15))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (22) + (15) - 2, .025) and -0.1170331765780176 = (10.256399801838255 - 11.456738850901536) / 10.256399801838255 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

Architecture arm64
OS ubuntu 20.04
Baseline 322f20cda9673a3872902ed3fb2ddfbcff97c007
Compare df96cdc2419cb79a6f78c14194d790d1cf4c34b6
Diff Diff

Regressions in System.Collections.Sort<Int32>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
List - Duration of single invocation 19.89 μs 22.10 μs 1.11 0.06 False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.Sort&lt;Int32&gt;*'

Payloads

Baseline
Compare

Histogram

System.Collections.Sort<Int32>.List(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 22.101172700000003 > 20.872401872000005.
IsChangePoint: Marked as a change because one of 10/17/2022 3:19:47 PM, 11/11/2022 5:53:56 PM, 12/1/2022 7:29:59 PM, 12/9/2022 5:51:37 PM, 12/14/2022 12:01:27 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -5.7769783129739825 (T) = (0 -23635.980716825397) / Math.Sqrt((3932532.203086654 / (22)) + (920954.8247696719 / (15))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (22) + (15) - 2, .025) and -0.13607345731011602 = (20804.97573879454 - 23635.980716825397) / 20804.97573879454 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

Architecture arm64
OS ubuntu 20.04
Baseline 322f20cda9673a3872902ed3fb2ddfbcff97c007
Compare df96cdc2419cb79a6f78c14194d790d1cf4c34b6
Diff Diff

Regressions in System.Tests.Perf_HashCode

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
Add - Duration of single invocation 7.89 μs 8.50 μs 1.08 0.05 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_HashCode*'

Payloads

Baseline
Compare

Histogram

System.Tests.Perf_HashCode.Add

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 8.501171196046426 > 8.286922860449318.
IsChangePoint: Marked as a change because one of 11/11/2022 5:53:56 PM, 12/14/2022 12:01:27 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -80.15079780387147 (T) = (0 -8494.318303981487) / Math.Sqrt((1172.8004972618075 / (22)) + (23.44785946181972 / (15))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (22) + (15) - 2, .025) and -0.07514925422075922 = (7900.594518049452 - 8494.318303981487) / 7900.594518049452 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

Architecture arm64
OS ubuntu 20.04
Baseline 322f20cda9673a3872902ed3fb2ddfbcff97c007
Compare df96cdc2419cb79a6f78c14194d790d1cf4c34b6
Diff Diff

Regressions in System.Collections.ContainsFalse<String>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
Span - Duration of single invocation 1.44 ms 1.66 ms 1.15 0.03 False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.ContainsFalse&lt;String&gt;*'

Payloads

Baseline
Compare

Histogram

System.Collections.ContainsFalse<String>.Span(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 1.6631151316666664 > 1.5158670686647726.
IsChangePoint: Marked as a change because one of 12/5/2022 9:44:53 PM, 12/14/2022 12:01:27 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -569.9350911649176 (T) = (0 -1663561.9359424603) / Math.Sqrt((2614868.056910527 / (22)) + (434107.6345315325 / (15))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (22) + (15) - 2, .025) and -0.1516898243516254 = (1444453.0990616393 - 1663561.9359424603) / 1444453.0990616393 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

Architecture arm64
OS ubuntu 20.04
Baseline 322f20cda9673a3872902ed3fb2ddfbcff97c007
Compare df96cdc2419cb79a6f78c14194d790d1cf4c34b6
Diff Diff

Regressions in PerfLabTests.LowLevelPerf

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio Baseline ETL Compare ETL
MeasureEvents - Duration of single invocation 49.09 ms 54.59 ms 1.11 0.03 False

Test Report

Repro

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

Payloads

Baseline
Compare

Histogram

PerfLabTests.LowLevelPerf.MeasureEvents

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 54.59488655 > 51.90240571875.
IsChangePoint: Marked as a change because one of 10/18/2022 9:26:37 AM, 10/26/2022 10:56:11 AM, 11/18/2022 7:31:41 AM, 12/14/2022 12:01:27 PM, 12/19/2022 10:34:07 PM falls between 12/10/2022 11:25:25 PM and 12/19/2022 10:34:07 PM.
IsRegressionStdDev: Marked as regression because -47.38816888925957 (T) = (0 -54805312.54880953) / Math.Sqrt((66506160961.242805 / (22)) + (148207237463.31003 / (15))) is less than -2.0301079282477414 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (22) + (15) - 2, .025) and -0.10891817671225361 = (49422323.21531386 - 54805312.54880953) / 49422323.21531386 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
@naricc
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naricc commented Dec 21, 2022 •
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@BrzVlad It looks like this change caused a regression : dotnet/runtime@200a90a

@naricc naricc removed the untriaged label Dec 21, 2022
@kotlarmilos kotlarmilos mentioned this issue Dec 26, 2022
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@naricc naricc mentioned this issue Jan 31, 2023
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@naricc naricc added the LinkedFromMaster Is this issue linked from the master perf issue label Jan 31, 2023
@kotlarmilos
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Looks like noise in data. Mitigated by dotnet/runtime#79215.

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@BrzVlad BrzVlad

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ampere arch-arm64 branch-refs/heads/main kind-micro_mono LinkedFromMaster Is this issue linked from the master perf issue mono-aot os-linux perf-regression runtime-mono
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