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dev.perf-failure-rate Calculator
Calculates change failure rate (percentage of deployments causing incidents) from deployment and incident counts in a application performance engineering context. DORA elite change failure rate is below 5% — rates above 15% indicate inadequate testing or deployment automation.
Inputs
Deploys
Reference formula or conversion factor shown for context.
Failed
Reference formula or conversion factor shown for context.
Rollbacks
Reference formula or conversion factor shown for context.
Results
change failure rate
Fraction of deployments causing a production incident or requiring a rollback. Elite teams: below 5%. High performers: 5-10%.
DORA
DORA (DevOps Research and Assessment) performance classification — Elite, High, Medium, or Low — based on the four key DevOps metrics: deployment frequency, lead time, MTTR, and change failure rate.
incidents/100
Sample size or count used in the calculation.
rollback rate
Fraction of deployments that required a rollback. Above 5-15% suggests quality gate or testing gaps.