Performance Check
Profile-guided performance analysis for memory, CPU, energy, and launch time.
Analysis Areas
1. Launch Time
- • Minimal work in App init
- • No synchronous network calls at launch
- • Lazy initialization of non-essential services
2. Main Thread Usage
- • Network calls are async
- • Image processing off main thread
- • Database operations off main thread
3. Memory Usage
- • No retain cycles in closures (weak self)
- • Large images downsampled for display
- • Caches have size limits
- • Observers removed on deinit
4. SwiftUI Performance
- • @State used for view-local state only
- • Large lists use LazyVStack/LazyHStack
- • Expensive computations cached outside body
5. Database / SwiftData
- • Batch fetches instead of loops
- • Large datasets paginated
- • No N+1 query patterns
6. Energy Usage
- • Location updates have appropriate accuracy
- • Timers invalidated when not needed
- • Animations don't run when off-screen
Output Format
Performance Grade: [A-F]
| Area | Grade | Issues |
|---|---|---|
| Launch | ||
| Main Thread | ||
| Memory | ||
| SwiftUI | ||
| Database |
Critical Issues:
- •
Optimization Opportunities:
- •