When should I use this skill instead of general performance tools?

Use this specifically when you suspect issues with Swift Concurrency, such as tasks queued but not executing, UI stutters during async work, or suspected actor-related delays.

What does the axiom-concurrency-profiling skill help with?

It provides expert guidance on using Xcode's Instruments to profile Swift async/await code, helping you find bottlenecks like actor contention and main thread blocking.

Does it provide code solutions for concurrency issues?

Yes, it includes specific Swift code patterns to fix common issues like offloading work from the MainActor or marking heavy work as nonisolated to increase parallelism.

Can it help with deadlocks in Swift Concurrency?

Absolutely. It helps identify thread pool exhaustion and the use of unsafe primitives like DispatchSemaphore that can lead to deadlocks in a cooperative thread model.

Axiom: Swift Concurrency Profiling

Name: Axiom: Swift Concurrency Profiling
Author: CharlesWiltgen

byCharlesWiltgen

•

233

Mobile Development

Profiles and optimizes Swift async/await performance using specialized Instruments workflows and concurrency debugging patterns.

概要

The axiom-concurrency-profiling skill provides structured guidance for diagnosing and resolving performance bottlenecks in modern Apple platform development. It helps developers visualize task lifetimes, identify actor contention, and prevent thread pool exhaustion using the Swift Concurrency template in Instruments. By providing clear solution patterns for UI stutters and priority inversions, this skill enables the creation of highly responsive iOS, macOS, and watchOS applications built on the cooperative thread model.

主な機能

Swift Concurrency Instruments template guidance
233 GitHub stars
Thread pool exhaustion and deadlock detection
Task priority inversion troubleshooting
Actor contention and visualization analysis
Main thread blocking identification and offloading

ユースケース

Eliminating UI stutters and freezes during heavy asynchronous operations
Detecting and replacing unsafe blocking primitives in cooperative thread contexts
Optimizing parallel data processing by reducing actor serialization

概要

主な機能

Swift Concurrency Instruments template guidance
233 GitHub stars
Thread pool exhaustion and deadlock detection
Task priority inversion troubleshooting
Actor contention and visualization analysis
Main thread blocking identification and offloading

ユースケース

Eliminating UI stutters and freezes during heavy asynchronous operations
Detecting and replacing unsafe blocking primitives in cooperative thread contexts
Optimizing parallel data processing by reducing actor serialization