perf-profile

name	perf-profile
description	Structured performance profiling workflow for Unity. Identifies bottlenecks, measures against budgets, and recommends optimizations.
argument-hint	[system-name or 'full']
user-invocable	true
allowed-tools	Read, Glob, Grep, Bash

When this skill is invoked:

1. Identify target: Specific system or full project scan.

2. Use MCP profiler tools (profiler-status, profiler-memory, profiler-extended):

   • Start profiler, capture frame timing data
   • Take memory snapshots
   • Enable frame debugger for draw call analysis

3. Analyze code for performance anti-patterns:

   • Allocations in Update/FixedUpdate/hot paths
   • Missing object pooling
   • Uncached GetComponent calls
   • LINQ in hot paths
   • String concatenation in loops
   • Unnecessary Update() methods

4. Check against budgets:

   • Frame time: 16.6ms (60fps) or 33.3ms (30fps)
   • Draw calls: < 2000 PC, < 500 mobile
   • Memory: varies by platform
   • GC: < 1KB/frame in gameplay

5. Output report:

## Performance Profile: [System/Full]

### Hotspots Found
| Location | Issue | Impact | Fix Effort |
|----------|-------|--------|------------|
| file:line | description | HIGH/MED/LOW | hours |

### Quick Wins (< 1 hour each)
1. ...

### Major Optimizations Needed
1. ...

### Memory Concerns
[Snapshot analysis, leak suspects]

### Recommendations (Priority Order)
1. ...