These views summarize stages, grouped by user. By default, rows are sorted by user and descending total stage latency.
The user_summary_by_stages
and
x$user_summary_by_stages
views
have these columns:
user
The client user name. Rows for which the
USER
column in the underlying Performance Schema table isNULL
are assumed to be for background threads and are reported with a host name ofbackground
.event_name
The stage event name.
total
The total number of occurrences of the stage event for the user.
total_latency
The total wait time of timed occurrences of the stage event for the user.
avg_latency
The average wait time per timed occurrence of the stage event for the user.