CI pipeline MTTR: an industry benchmark

const metadata = ; Mean time to recovery (MTTR) for a red main branch is one of the clearest measures of CI/CD reliability. We surveyed patterns across teams running trunk-based workflows with automated merge gates. Benchmark bands | Tier | MTTR (main red → green) | Typical traits | | | | | | Top quartile | < 30 min | Dedicated queue on-call, flake quarantine, structured failure handoff | | Median | 1–3 hours | Ad-hoc Slack triage, partial log visibility | | Bottom quartile | 4+ hours | Re-run culture, unclear ownership, opaque failures | What correlates with faster recovery 1. Failure ownership routing: auto-assign to last merger or codeowner 2. Structured failure context: step, diff, and history in one view 3. Low flake rate: under ~2% of merge-blocking runs 4. Parallel investigation: agents or bots pre-triage before humans open logs The hidden cost Every hour main stays red blocks every engineer waiting to merge. For a 100-person org, three hours of red main is roughly 300 engineer-hours of deferred integration: before counting incident risk from stacked hotfixes. Implication MTTR improvements rarely come from faster tests alone. They come from faster diagnosis and clearer ownership when tests fail for real.