Can it help with Swift Concurrency issues?

Yes, it includes guidance for using the Swift Concurrency instrument to identify actor contention, task scheduling delays, and execution bottlenecks.

How do I detect data races with this skill?

The skill provides patterns for enabling and interpreting the Thread Sanitizer (TSAN) in Xcode and offers code-level fixes using Actors and Locks.

Does this skill work with the iOS Simulator?

While it provides commands for all environments, for accurate performance and GPU profiling, using a physical device is highly recommended as Simulator results can differ significantly.

What version of Xcode is required?

This skill is designed for modern development workflows and specifically mentions support for Xcode 16+ features and current Swift performance APIs.

Performance Profiling for iOS

Name: Performance Profiling for iOS
Author: bluewaves-creations

bybluewaves-creations

Mobile Development

Optimizes iOS application performance using Xcode Instruments, memory debugging tools, and production-ready optimization patterns.

About

This skill provides comprehensive guidance for diagnosing and resolving performance bottlenecks in iOS applications. It covers essential Xcode Instruments templates such as Time Profiler, Allocations, and Leaks, while offering detailed case studies for SwiftUI scroll optimization and app launch acceleration. By implementing advanced debugging techniques with Address (ASAN) and Thread Sanitizers (TSAN), developers can identify memory leaks, data races, and UI hangs. Whether you are aiming for a smooth 60 FPS or reducing cold-start times, this skill provides the specific commands and code patterns required for high-performance Apple platform development.

Key Features

App launch time analysis and deferred initialization strategies
Memory leak detection and prevention using modern Swift capture patterns
Deep-dive guidance for Xcode Instruments (Time Profiler, Leaks, Core Animation)
0 GitHub stars
Concurrency debugging and thread safety patterns using TSAN and Actors
SwiftUI list and scroll optimization techniques to eliminate offscreen rendering

Use Cases

Identifying and fixing memory leaks or retain cycles in long-running applications
Optimizing app launch sequences to improve user retention and system responsiveness
Eliminating scroll stutter and frame drops in complex SwiftUI list views

About

Key Features

App launch time analysis and deferred initialization strategies
Memory leak detection and prevention using modern Swift capture patterns
Deep-dive guidance for Xcode Instruments (Time Profiler, Leaks, Core Animation)
0 GitHub stars
Concurrency debugging and thread safety patterns using TSAN and Actors
SwiftUI list and scroll optimization techniques to eliminate offscreen rendering

Use Cases

Identifying and fixing memory leaks or retain cycles in long-running applications
Optimizing app launch sequences to improve user retention and system responsiveness
Eliminating scroll stutter and frame drops in complex SwiftUI list views