> ## Documentation Index > Fetch the complete documentation index at: https://docs.sweetr.dev/llms.txt > Use this file to discover all available pages before exploring further. # Review Speed > Stacked time to first review and time to approval per period. Breaks down review latency into two stacked bars per period, using **merged PRs** only. * **Time to first review** — from PR marked ready for review to the first review submitted. Measures how long authors wait before someone picks their PR up. * **Time to approval** — from first review to the approval that unblocks merge. Measures how long review conversations drag on. Click a column to drill into the PRs merged in that period. ### Why it matters Long turnaround kills flow: context gets stale, authors start new work, and rebases pile up. Splitting first review from approval tells you *where* the time goes: * Thick **first review** → reviewers aren't picking PRs up. * Thick **approval** → threads drag on, nitpicks, or too many rounds. ### What good looks like Most small PRs should get a first review within hours. Time to approval varies with change complexity, but should trend down as review discipline improves. ### How to improve * **For slow first review:** set a team SLA, simplify reviewer assignment (codeowners, round-robin), and enable [Alerts](/automations/alerts) for stuck reviews. * **For slow approval:** move style to linters, discourage nitpicks, outline requirements in tickets, and encourage authors to review their own diff before requesting reviews. * Keep PRs small. Review latency scales non-linearly with size. ### How the numbers are built * **Time to first review** is averaged for each period. A PR is placed in the bucket that contains when the first review happened. The clock starts when the PR is **ready** (see below) and stops at the first human review (not the author, not bots). * **Time to approval** is the average time from that first review until the first approval in the same bucket (by when the approval landed). If a PR never got a first review, it does not contribute here. * **Business time:** weekends are excluded; only full weekdays count. **When a PR counts as "ready"** matches the rest of Sweetr: the earliest of (1) first review request, (2) marked ready for review (drafts are not ready), or (3) opening the PR — using only what happened before the first review. ## See Also