axiom-concurrency-profiling

Profile Swift concurrency performance issues in iOS/macOS apps using Instruments.

Updated Dec 23, 2025

Search Tags:#concurrency #profiling #swift #instruments #async-await #actors #thread-pool

Ready to run

npx skills add https://github.com/pradeepmouli/swift-template --skill axiom-concurrency-profiling-pradeepmouli

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: axiom-concurrency-profiling
Source: https://github.com/pradeepmouli/swift-template/tree/main/.agents/skills/axiom-concurrency-profiling
Command: npx skills add https://github.com/pradeepmouli/swift-template --skill axiom-concurrency-profiling-pradeepmouli

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Profile Swift concurrency to profile and diagnose performance issues, actor contention, and thread pool exhaustion using Instruments workflows.

Core Features & Use Cases

In Instruments-based profiling of Swift concurrency: tasks, actors, and thread states
Visualize task lifecycles, actor contention, and cross-thread execution patterns
Guided workflows to diagnose main thread blocking and thread pool exhaustion

Quick Start

Profile your Swift concurrency code with Instruments to identify main thread blocking, actor contention, and thread pool exhaustion.

Frequently Asked Questions about axiom-concurrency-profiling

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I diagnose main thread blocking in Swift async/await code?▼

Diagnose main thread blocking in Swift async/await code by profiling task lifecycles and cross-thread execution patterns with Instruments. This identifies where UI tasks block, guiding safe performance improvements.

What is actor contention and how does it affect iOS app performance?▼

Actor contention occurs when multiple concurrent tasks wait to access a shared actor, stalling execution. Profiling with Instruments visualizes these task lifecycles to pinpoint the resulting performance bottlenecks.

How do I identify thread pool exhaustion in Swift concurrency?▼

Identify thread pool exhaustion in Swift concurrency by using Instruments to analyze thread states and cross-thread execution patterns. This guided workflow diagnoses when the cooperative thread pool lacks available workers.

Can I use Instruments to profile actors and async tasks on macOS?▼

Yes, you can use Instruments to profile actors and async tasks on macOS. The workflow focuses on visualizing task lifecycles, actor contention, and thread pool usage across UI and background tasks.

What is the best way to visualize Swift task lifecycles and thread states?▼

The best way to visualize Swift task lifecycles and thread states is through Instruments-based concurrency profiling. This approach maps cross-thread execution patterns and actor contention to locate bottlenecks.