78 / 95 · 05 Performance & Chaos Engineering · Game Days: Incident Response Testing← prev⊞ allnext →☰ Read as one page
12.5Measuring Game Day Effectiveness
Track these metrics across game days to measure organizational improvement:
| Metric | First Game Day Target | Mature Target |
|---|---|---|
| Mean Time to Detect (MTTD) | < 15 minutes | < 5 minutes |
| Mean Time to Acknowledge (MTTA) | < 10 minutes | < 2 minutes |
| Mean Time to Resolve (MTTR) | < 60 minutes | < 15 minutes |
| Runbook accuracy | 50% (many gaps) | 90%+ |
| Communication effectiveness | Ad hoc | Structured incident command |
| Action items completed (% within 2 weeks) | 30% | 80%+ |