#### 28.4.3.4 The host\_summary\_by\_stages and x$host\_summary\_by\_stages Views

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 These views summarize statement stages, grouped by host. By default, rows are sorted by host and descending total latency.

 The [`host_summary_by_stages`](sys-host-summary-by-stages.html) and [`x$host_summary_by_stages`](sys-host-summary-by-stages.html) views have these columns:

* `host`

   The host from which the client connected. Rows for which the `HOST` column in the underlying Performance Schema table is `NULL` are assumed to be for background threads and are reported with a host name of `background`.

* `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.

