[Perf] Linux/x64: 1 Improvement on 5/12/2023 10:43:40 AM

[performanceautofiler]

Run Information

Name	Value
Architecture	x64
OS	ubuntu 18.04
Queue	TigerUbuntu
Baseline	7eaf4b6d4dd2e67387bca7e5fb29e2db47f2589b
Compare	21dc5d2ae96bfa07d02244b60b9bc7d5f7fecdcc
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Improvements in System.IO.Tests.BinaryWriterExtendedTests

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
WriteAsciiString - Duration of single invocation	14.87 ns	11.58 ns	0.78	0.21	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

Payloads

Baseline
Compare

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

Payloads

Baseline
Compare

Histogram

System.IO.Tests.BinaryWriterExtendedTests.WriteAsciiString(StringLengthInChars: 32)

Description of detection logic

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.
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 11.576785913684523 < 12.395396096992291.
IsChangePoint: Marked as a change because one of 4/25/2023 6:46:56 PM, 5/12/2023 4:02:48 AM, 5/16/2023 7:34:13 AM falls between 5/7/2023 5:11:33 AM and 5/16/2023 7:34:13 AM.
IsImprovementStdDev: Marked as improvement because 39.36838765753386 (T) = (0 -11.592655603650927) / Math.Sqrt((0.39302433229200734 / (299)) + (0.00036475865454620426 / (12))) is greater than 1.9676708853560316 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (299) + (12) - 2, .975) and 0.11074620016961816 = (13.03638579431669 - 11.592655603650927) / 13.03638579431669 is greater than 0.05.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[kunalspathak]

dotnet/runtime#85266