perf

name	perf
description	Performance optimization workflow. Use when the task involves performance improvement, optimization, profiling, or benchmarking.

Performance Optimization Workflow

Principle: Always measure before optimizing — never optimize based on guesses.

Measurement

1. Profiling (primary)

cargo build --profile profiling
samply record ./target/profiling/trev [args]

Analyze profiler output and identify bottlenecks before making changes.

2. Benchmarking (hot path comparison)

just bench

• Criterion benchmarks (benches/ directory)
• Compare results before and after changes

Workflow

1. Measure: Establish baseline with profiler or benchmarks
2. Analyze: Identify bottlenecks
3. Optimize: Improve only the identified areas
4. Verify: Re-measure to confirm improvement