quantile_over_time(0.5, foo[t]) returns some value X, where 50% of the values in foo over the time range are below X and 50% are above X (i.e. "the median value"). Think of it as: sort all the values from low to high, and pick the middle one.
quantile_over_time(0.95, foo[t]) returns some value X, where 95% of the values in foo over the time range are below X and 5% are above X. Think of it as: discard the highest 5% of values, then pick the highest remaining. Therefore: quantile_over_time(0.95, foo[t]) > 1 will alert if 5% or more of the samples have a duration of more than 1 second. -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/91f45b0f-d3f7-4e8d-b479-feeab1f1669e%40googlegroups.com.

