skills.rest
KumarAdi8
KumarAdi8COMMUNITY
Explore all skills by this author →
GitHub

swiftui-performance

Audit SwiftUI view code and Instruments traces to remediate runtime performance issues.

Updated Aug 23, 2026
Search Tags:#performance#optimization#profiling#swift#swiftui#instruments#code-review
One-click install
npx skills add https://github.com/KumarAdi8/AgentKit --skill swiftui-performance-kumaradi8
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: swiftui-performance
Source: https://github.com/KumarAdi8/AgentKit/tree/main/skills/swiftui-performance
Command: npx skills add https://github.com/KumarAdi8/AgentKit --skill swiftui-performance-kumaradi8

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps you diagnose and remediate SwiftUI runtime performance problems such as slow rendering, janky scrolling, high CPU or memory usage, excessive view updates, identity churn, and layout thrash so that interactive screens run smoothly on device.

Core Features & Use Cases

  • End-to-end performance audit: instrument, baseline, and prioritize issues using SwiftUI Instrument lanes and the Time Profiler.
  • Code-first diagnosis: detect invalidation storms, expensive work in body, unstable identities in lists, and layout/measurement thrash from view code.
  • Concrete remediation: prescribe fixes like narrowing state scope, stabilizing ForEach ids, precomputing work, downsampling images, and isolating representables.
  • Verification guidance: re-measure on Release builds on device and compare update counts, frame hitches, and CPU/memory deltas.

Quick Start

Provide the target SwiftUI view code, reproduction steps, device/OS/build details, and any Instruments trace or screenshots to receive a prioritized performance audit and remediation plan.

Frequently Asked Questions about swiftui-performance

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

FAQPage Schema
How do I fix janky scrolling in SwiftUI?▼

Fix janky scrolling by auditing SwiftUI view code for invalidation storms and unstable ForEach ids. Remediation involves narrowing state scope, stabilizing identifiers, and precomputing heavy work to eliminate layout thrash.

What causes excessive view updates in SwiftUI?▼

Excessive view updates in SwiftUI are caused by invalidation storms and identity churn. Diagnosing view code and Time Profiler traces helps pinpoint where state scope is too broad, allowing you to isolate state and prevent unnecessary re-renders.

How do I profile SwiftUI performance issues using Instruments?▼

Profile SwiftUI performance using the SwiftUI Instrument lanes and Time Profiler to baseline issues. Analyze traces to detect high CPU usage and frame hitches, then prioritize fixes based on the findings.

Why does my SwiftUI screen have high CPU usage on an iOS device?▼

High CPU usage in SwiftUI often stems from expensive work in body, layout measurement thrash, or off-main-thread image processing issues. Reviewing view code and Instruments traces helps identify and isolate the problematic operations.

How do I verify SwiftUI performance fixes on an iOS device?▼

Verify SwiftUI performance fixes by re-measuring on Release builds directly on the device. Compare update counts, frame hitches, and CPU or memory deltas against the baseline to confirm the remediation.

Related Skills

Explore More Software Engineering Skills→
curtislmartincurtislmartin

swiftui-performance-audit

Audit SwiftUI view runtime performance and identify root causes of slow rendering.

Community
Advanced
onymchatonymchat

swiftui-performance

Diagnose SwiftUI rendering issues and optimize view performance.

Official
Advanced
DFly7DFly7

swiftui-performance

Audit SwiftUI view performance and identify root causes of slow rendering.

Community
Advanced
harperreedharperreed
330

swiftui-performance-audit

Audit SwiftUI code and guide Instruments profiling to diagnose rendering bottlenecks.

Community
Intermediate