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27.4.3.4 The host_summary_by_stages and x$host_summary_by_stages Views
These views summarize statement stages, grouped by host. By default, rows are sorted by host and descending total latency.
The host_summary_by_stages
and
x$host_summary_by_stages
views
have these columns:
host
The host from which the client connected. Rows for which the
HOST
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 host.
total_latency
The total wait time of timed occurrences of the stage event for the host.
avg_latency
The average wait time per timed occurrence of the stage event for the host.
Document created the 26/06/2006, last modified the 26/10/2018
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