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performance-profiling

Profile Apple platform apps with Instruments to detect CPU, memory, and launch bottlenecks.

Updated Jun 2, 2026
Search Tags:#profiling#ios#instruments#performance-optimization#memory-profiling#time-profiler
One-click install
npx skills add https://github.com/ano4l/SiteRent --skill performance-profiling-ano4l
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: performance-profiling
Source: https://github.com/ano4l/SiteRent/tree/main/skills/performance/profiling
Command: npx skills add https://github.com/ano4l/SiteRent --skill performance-profiling-ano4l

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Profiling and diagnosing performance issues in Apple platform apps to quickly locate CPU, memory, launch, and energy hotspots so you can implement targeted fixes.

Core Features & Use Cases

  • Instruments-based profiling: Time Profiler, Allocations, Leaks, Energy diagnostics, and MetricKit to gather comprehensive traces.
  • Common scenarios: diagnose app hangs, memory growth, slow launches, and high energy impact with repeatable workflows.
  • Guidance and patterns: concrete fix patterns and best practices you can apply in code and project setup.
  • Real-world example: reproduce a performance issue in a real device trace and identify the hot path for optimization.

Quick Start

Launch Instruments with Time Profiler, reproduce the issue on a real device, and capture a trace for analysis.

Frequently Asked Questions about performance-profiling

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

FAQPage Schema
How do I profile iOS app hangs and high CPU usage with Instruments?▼

To diagnose iOS app hangs and high CPU usage, use Time Profiler in Instruments to capture a real device trace. This skill provides workflows to analyze the trace and identify the hot path for targeted fixes.

What's the best way to find memory leaks and memory growth in an iOS app?▼

The best way to find memory leaks and growth is using the Allocations and Leaks instruments. This skill guides you through capturing memory traces to detect persistent growth and apply codified fix patterns.

How do I trace slow app launch times on macOS?▼

Trace slow app launch times on macOS by profiling the launch sequence with Instruments. This skill helps you capture the trace to pinpoint bottlenecks delaying initialization and implement performance optimizations.

Can I use MetricKit to diagnose energy inefficiency in iOS apps?▼

Yes, you can use MetricKit alongside Instruments to diagnose energy inefficiency in iOS apps. This skill integrates Energy diagnostics and MetricKit workflows to gather actionable data on high energy impact hotspots.

Do I need a real device to profile performance issues with Instruments?▼

Yes, profiling performance issues with Instruments requires a real device to accurately reproduce the issue and capture actionable data. This skill emphasizes capturing real device traces to identify the hot path for optimization.

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