Swift / 26:43

Profile, fix, and verify: Improve app responsiveness with Instruments

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Key Points

  • Tackle app responsiveness issues with a clear workflow.
  • Covers the Swift Concurrency instrument, Time Profiler, and System Trace to pinpoint bottlenecks.
  • Shows how to use top functions and run comparisons to measure the improvements and confirm the fixes.
  • And learn about other enhancements in Instruments which make each iteration of this cycle faster than ever, so developers can deliver a smoother user experience in.
  • The session moves through Diagnostic flow, Sampling data visualization, Execution contention, System blocking.
  • Key concepts include Instruments, OSLog, OSSignpost, SwiftUI, WWDC25.

Condensed Flow

01

Diagnostic flow:

Focuses on Instruments.

02

Sampling data visualization:

Focuses on Instruments.

03

Execution contention:

Focuses on Instruments, SwiftUI.

More Detail

Additional details

  • Detailed flow: Diagnostic flow -> Sampling data visualization -> Execution contention -> System blocking.
  • APIs and concepts to recognize: Instruments, OSLog, OSSignpost, SwiftUI, WWDC25.
  • Implementation focus: OSLog, OSSignpost, Instruments.

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