Flow efficiency

What it measures

The share of each PR's life spent in active work (coding, review) versus waiting (pickup wait, merge wait), shown as a weekly 100%-stacked band. A window-level flow-efficiency % is footnoted.

Why it matters

Most delivery delay is waiting, not working. Flow efficiency makes the wait visible as a proportion of total time, which is often the fastest thing a team can improve.

How to read it

• Bigger wait bands mean more queue time — usually the cheapest win.
• The percentage is an approximation built from PR timestamps; read the trend, not the decimal.

Anti-blame

Time bands are aggregated across the team's PRs; no individual is represented.