Programming language: Swift
License: Apache License 2.0
Tags: Tools    

SwiftCompilationPerformanceReporter alternatives and similar libraries

Based on the "Tools" category.
Alternatively, view SwiftCompilationPerformanceReporter alternatives based on common mentions on social networks and blogs.

Do you think we are missing an alternative of SwiftCompilationPerformanceReporter or a related project?

Add another 'Tools' Library



Inspired by Brian and Bryan's prior work, we've decided to develop a Swift Package and script to generate automated reports for slow Swift compilation paths in specific targets!

SwiftCompilationPerformanceReporter (nicknamed SwiftCPR) can be configured to build a specific target, output raw debug times to a specific location, and clean those logs to rank the slowest parts to compile.



SwiftCompilationPerformanceReporter can be configured via the config.json file. Below is a description of the options available and a sample configuration:

    // Note: either a project or workspace file can be specified, _but not both_
    "workspacePath": "/Users/jasdev/orangina/Orangina.xcworkspace",
    "projectPath": "/Users/jasdev/orangina/Orangina.xcodeproj",

    "scheme": "Orangina",
    "buildOutputDirectory": "/Users/jasdev/Desktop/CompilationLogs/",
    "reportOutputDirectory": "/Users/jasdev/Desktop/ProcessedLogs/",
    "limit": 10

workspacePath: The absolute path to the workspace file to use.

projectPath: The absolute path to the project file to use.

scheme: The scheme to use

buildOutputDirectory: The directory to store the raw build output files with Swift compilation times.

reportOutputDirectory: The directory to store the processed logs derived from the raw log output.

limit: The number of compilation paths to include in the final results (i.e. the slowest limit paths that compiler handled).


  • Simply clone this repository on the machine that will be generating these reports.
  • Run swift build in the root directory
  • Make sure all directories used in config.json are set properly and exist.
  • If your desired scheme is built with a pre-3.x version of Swift, you'll want to xcode-select back to a stable version (i.e. sudo xcode-select -s /Applications/Xcode.app)
  • To kick off the script, run .build/debug/SwiftCompilationPerformanceReporter in the root directory!
  • If there are any errors, the script will output them.
  • The processed logs will be outputted as timestamped files in reportOutputDirectory.


The processed logs will be outputted as a tab separated file with 3 columns after the first line (which holds the total build time). All time units are in seconds.

[Build Time]\t[Path and Line]\t[Detailed Description]

Sample output file:

Total build time: 1214.91016298532
17.0409 /Users/jasdev/orangina/Classes/PerformanceLoggingEvent.swift:278:37 final get {}
7.9331  /Users/jasdev/orangina/Components/ComposeUI/Classes/Election/LeaderboardTableView.swift:71:17   @objc final class func totalHeight(candidates: UInt, allowsLeaderboard: Bool) -> CGFloat
6.2961  /Users/jasdev/orangina/Classes/UniversalLink.swift:127:25   private final class func dictionaryOfAppArgumentsFromQueryString(string: String) -> [NSObject : AnyObject]?
4.2116  /Users/jasdev/orangina/Classes/ActivityViewController.swift:56:22   final get {}