[Perf] Linux/arm64: 4 Improvements on 10/18/2022 8:25:03 PM

[performanceautofiler]

Run Information

Architecture	arm64
OS	ubuntu 20.04
Baseline	8393c4eb74afecaa70267b2a94b9b94c1d1ae384
Compare	51e3afb2ba42609c3711cb50fb5eaa6800bc1fde
Diff	Diff

Improvements in System.IO.Tests.Perf_File

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ReadAllBytes - Duration of single invocation	8.68 μs	6.64 μs	0.77	0.48	False
ReadAllBytesAsync - Duration of single invocation	15.52 μs	13.77 μs	0.89	0.51	False
ReadAllBytes - Duration of single invocation	7.04 μs	5.44 μs	0.77	0.47	False
CopyTo - Duration of single invocation	35.07 μs	24.39 μs	0.70	0.42	False

Test Report

Repro

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

Related Issues

Regressions

• [Perf] Linux/arm64: 3 Regressions on 10/18/2022 8:25:03 PM
• [Perf] Windows/x64: 4 Regressions on 10/18/2022 8:25:03 PM
• [Perf] Windows/x64: 4 Regressions on 10/18/2022 8:25:03 PM
• [Perf] Windows/x86: 2 Regressions on 10/18/2022 8:25:03 PM
• [Perf] Linux/arm64: 2 Regressions on 10/18/2022 8:25:03 PM

Improvements

• [Perf] Linux/x64: 8 Improvements on 10/18/2022 8:25:03 PM
• [Perf] Alpine/x64: 8 Improvements on 10/18/2022 8:25:03 PM
• [Perf] Linux/arm64: 3 Improvements on 10/18/2022 8:25:03 PM

Payloads

Baseline
Compare

Histogram

Edge Detector Info

Collection Data

System.IO.Tests.Perf_File.ReadAllBytes(size: 16384)

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 6.641827776913249 < 8.427857879093922.
IsChangePoint: Marked as a change because one of 8/23/2022 11:36:32 PM, 9/26/2022 7:45:50 PM, 10/18/2022 9:26:37 AM, 10/27/2022 12:34:03 AM falls between 10/18/2022 9:26:37 AM and 10/27/2022 12:34:03 AM.
IsImprovementStdDev: Marked as improvement because 11.039698269453854 (T) = (0 -6516.070212464567) / Math.Sqrt((1436445.9673656828 / (299)) + (74872.48410190927 / (30))) is greater than 1.9672451058622664 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (30) - 2, .975) and 0.12644982997243243 = (7459.297057041305 - 6516.070212464567) / 7459.297057041305 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.IO.Tests.Perf_File.ReadAllBytesAsync(size: 4096)

```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 13.767226848748885 < 14.840042556252007.
IsChangePoint: Marked as a change because one of 9/26/2022 7:45:50 PM, 10/18/2022 9:26:37 AM, 10/27/2022 12:34:03 AM falls between 10/18/2022 9:26:37 AM and 10/27/2022 12:34:03 AM.
IsImprovementStdDev: Marked as improvement because 5.21349297023047 (T) = (0 -13233.262950810222) / Math.Sqrt((1419890.6139476732 / (299)) + (400400.09192429506 / (30))) is greater than 1.9672451058622664 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (30) - 2, .975) and 0.05032917960805253 = (13934.578873707627 - 13233.262950810222) / 13934.578873707627 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.IO.Tests.Perf_File.ReadAllBytes(size: 4096)

```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 5.436513533570089 < 6.913735219613247.
IsChangePoint: Marked as a change because one of 8/23/2022 11:36:32 PM, 9/26/2022 7:45:50 PM, 10/18/2022 9:26:37 AM, 10/27/2022 12:34:03 AM falls between 10/18/2022 9:26:37 AM and 10/27/2022 12:34:03 AM.
IsImprovementStdDev: Marked as improvement because 8.304015422234999 (T) = (0 -5098.590764580664) / Math.Sqrt((1229389.0786072183 / (299)) + (184980.43167016227 / (30))) is greater than 1.9672451058622664 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (30) - 2, .975) and 0.14171536809671717 = (5940.4428030760855 - 5098.590764580664) / 5940.4428030760855 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.IO.Tests.Perf_File.CopyTo(size: 512)

```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 24.393960280373832 < 33.38621939118924.
IsChangePoint: Marked as a change because one of 8/23/2022 6:13:58 PM, 9/26/2022 7:45:50 PM, 10/18/2022 9:26:37 AM, 10/27/2022 12:34:03 AM falls between 10/18/2022 9:26:37 AM and 10/27/2022 12:34:03 AM.
IsImprovementStdDev: Marked as improvement because 12.403694416824491 (T) = (0 -24805.180888439798) / Math.Sqrt((21523518.47135635 / (299)) + (1479005.4675781121 / (30))) is greater than 1.9672451058622664 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (30) - 2, .975) and 0.14831688345980834 = (29124.89446686034 - 24805.180888439798) / 29124.89446686034 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

[EgorBo]

Either typical IO-related noise or dotnet/runtime#76730