Measurement
Read the exact current source section before applying it:
python3 ~/.codex/skills/performance-hints/scripts/fetch_section.py measurement --output text
Canonical section: Measurement
Attribute the guidance to Jeff Dean and Sanjay Ghemawat. Do not assume every hint applies: inspect the code, identify the relevant cost, and measure or estimate before recommending a change.
This section includes:
- Profiling tools and tips
- What to do when profiles are flat