---

name: performance-review description: Provides performance optimization guidelines for profiling, caching, memory management, and concurrency. Use when optimizing slow code, fixing memory leaks, improving throughput, or conducting performance reviews. allowed-tools:

• Read
• Edit
• Glob
• Grep
• Bash model: sonnet

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Performance Review Skill

When to Use

• Code performance optimization
• Memory leak fixes
• Throughput improvements
• Performance review requests
• Bottleneck analysis

Performance Analysis Workflow

CopyProfiling → Identify bottlenecks → Optimize → Verify

Checklist

Algorithm & Data Structures

• Time complexity analysis (Big-O)
• Appropriate data structure selection
• Remove unnecessary operations

Memory

• Minimize memory allocation
• Object reuse (pooling)
• Cache-friendly access patterns

Concurrency

• Minimize lock contention
• Leverage async I/O
• Thread pool optimization

Caching

• Appropriate cache strategy
• Cache invalidation policy
• Cache hit rate monitoring

Reference Documents (Import Syntax)

@./reference/performance.md @./reference/memory.md @./reference/concurrency.md @./reference/monitoring.md

Caution

"Premature optimization is the root of all evil" - Donald Knuth

Always confirm bottlenecks through profiling before optimizing.