MySQL 9.3 Reference Manual Including MySQL NDB Cluster 9.3
These views summarize wait events, grouped by host and event. By default, rows are sorted by host and descending total latency. Idle events are ignored.
The waits_by_host_by_latency and
x$waits_by_host_by_latency views
have these columns:
host
The host from which the connection originated.
event
The event name.
total
The total number of occurrences of the event for the host.
total_latency
The total wait time of timed occurrences of the event for the host.
avg_latency
The average wait time per timed occurrence of the event for the host.
max_latency
The maximum single wait time of timed occurrences of the event for the host.