Threshold replay

Today every down event opens a ticket. The same tickets, replayed with a minimum outage length before one opens.

Minimum outage length before a ticket opens15minutes
–would still open
–would not open
–agent comments avoided
–fix rate of remaining tickets · today 16%
–fix tickets lost

Overlapping device outages at a store merge into one episode; the longest is compared with the threshold. Tickets a person reported always open. Comments avoided is an upper bound.

Outage length barely predicts whether a human was needed: 31% of self-healed agent-worked tickets had a longest outage under 15 minutes, and 19% of fix tickets never had one over 15 minutes.