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[SR-1609] Support recording baseline for performance regression tests #386

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briancroom opened this issue May 24, 2016 · 0 comments
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@briancroom
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Previous ID SR-1609
Radar None
Original Reporter @briancroom
Type Bug
Additional Detail from JIRA
Votes 0
Component/s XCTest
Labels Bug
Assignee None
Priority Medium

md5: 89bb688c4da749aeb43653263685237d

Issue Description:

We added basic support for XCTest's performance testing APIs in https://bugs.swift.org/browse/SR-1355, however one crucial component of that is still missing, namely recording baseline results of performance tests and triggering test failures when significant regressions are detected relative to those baselines.

I see a few pieces to this:

  • Persisting baseline data to disk. Xcode uses a Plist format for this. It would probably make sense to use a compatible format here.

  • Comparing test results to a previously recorded baseline and triggering a failure if the performance has regressed. Xcode's supposedly triggers a failure if Average - BaselineAverage is greater than 0.1 seconds and is more than 10% higher than BaselineAverage itself.

  • Providing a mechanism (probably command-line flags?) instructing the runner where to find and create baseline data, and for causing the baseline data to be updated.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from swiftlang/swift May 9, 2022
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