P99 Latency
The maximum latency experienced by 99% of requests, highlighting performance for all but the worst 1% edge cases.
Definition
The maximum latency experienced by 99% of requests, highlighting performance for all but the worst 1% edge cases.
Use case
Ensuring P99 latency is under 200ms so 99 out of 100 users experience immediate page loads.
Related terms
Articles
Everything you know about latency is wrong
Percentiles and outliers, explained with hard numbers.