Performance Measurement

Use Jeff Dean and Sanjay Ghemawat's canonical measurement guidance for benchmarks, profiling, flat profiles, and optimization validation. Use when collecting evidence, selecting profiling tools, interpreting profiles, or proving that a change improved performance.

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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

boshjerns/performance-hints-agent-skills/tree/main/skills/performance-measurement commit d101ad86a3

Frequently asked questions

npx skillmds@latest add boshjerns/performance-measurement