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MarkLeithMarkLeith
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Add missing waits_by_host_by_latency.sql file. Update the waits_by_user_by_latency view to also include background thread info as with other user summary views. Perhaps this should be a user_summary_by_waits_by_latency, and similar for the host one, for consistency, but not done here.
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‎README.md‎

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@@ -1105,7 +1105,7 @@ mysql> select * from wait_classes_global_by_latency;
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##### Description
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Lists the top wait events by their total latency, ignoring idle (this may be very large) per user.
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Lists the top wait events per user by their total latency, ignoring idle (this may be very large) per user.
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##### Example
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##### Description
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Lists the top wait events by their total latency, ignoring idle (this may be very large) per host.
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Lists the top wait events per host by their total latency, ignoring idle (this may be very large) per host.
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##### Example
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‎views/p_s/waits_by_host_by_latency.sql‎

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/* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/*
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* View: waits_by_host_by_latency
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*
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* Lists the top wait events per host by their total latency, ignoring idle (this may be very large).
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*
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* mysql> select * from sys.waits_by_host_by_latency where host != 'background' limit 5;
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* +-----------+------------------------------+-------+---------------+-------------+-------------+
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* | host | event | total | total_latency | avg_latency | max_latency |
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* +-----------+------------------------------+-------+---------------+-------------+-------------+
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* | localhost | wait/io/file/sql/file_parser | 1386 | 14.50 s | 10.46 ms | 357.36 ms |
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* | localhost | wait/io/file/sql/FRM | 162 | 356.08 ms | 2.20 ms | 75.33 ms |
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* | localhost | wait/io/file/myisam/kfile | 410 | 322.29 ms | 786.08 us | 65.98 ms |
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* | localhost | wait/io/file/myisam/dfile | 1327 | 307.44 ms | 231.68 us | 37.16 ms |
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* | localhost | wait/io/file/sql/dbopt | 89 | 180.34 ms | 2.03 ms | 63.41 ms |
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* +-----------+------------------------------+-------+---------------+-------------+-------------+
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*
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*/
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CREATE OR REPLACE
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ALGORITHM = MERGE
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DEFINER = 'root'@'localhost'
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SQL SECURITY INVOKER
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VIEW waits_by_host_by_latency (
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host,
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event,
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total,
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total_latency,
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avg_latency,
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max_latency
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) AS
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SELECT IF(host IS NULL, 'background', host) AS host,
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event_name AS event,
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count_star AS total,
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sys.format_time(sum_timer_wait) AS total_latency,
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sys.format_time(avg_timer_wait) AS avg_latency,
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sys.format_time(max_timer_wait) AS max_latency
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FROM performance_schema.events_waits_summary_by_host_by_event_name
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WHERE event_name != 'idle'
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AND sum_timer_wait > 0
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ORDER BY host, sum_timer_wait DESC;
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/*
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* View: waits_by_host_by_latency
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*
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* Lists the top wait events per host by their total latency, ignoring idle (this may be very large).
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*
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* mysql> select * from sys.x$waits_by_host_by_latency where host != 'background' limit 5;
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* +-----------+------------------------------+-------+----------------+-------------+--------------+
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* | host | event | total | total_latency | avg_latency | max_latency |
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* +-----------+------------------------------+-------+----------------+-------------+--------------+
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* | localhost | wait/io/file/sql/file_parser | 1388 | 14502657551590 | 10448600240 | 357364034170 |
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* | localhost | wait/io/file/sql/FRM | 167 | 361060236420 | 2162037319 | 75331088170 |
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* | localhost | wait/io/file/myisam/kfile | 410 | 322294755250 | 786084585 | 65978227120 |
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* | localhost | wait/io/file/myisam/dfile | 1327 | 307435262550 | 231676679 | 37162925800 |
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* | localhost | wait/io/file/sql/dbopt | 89 | 180341976360 | 2026314303 | 63405386850 |
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* +-----------+------------------------------+-------+----------------+-------------+--------------+
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*
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*/
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CREATE OR REPLACE
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ALGORITHM = MERGE
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DEFINER = 'root'@'localhost'
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SQL SECURITY INVOKER
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VIEW x$waits_by_host_by_latency (
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host,
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event,
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total,
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total_latency,
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avg_latency,
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max_latency
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) AS
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SELECT IF(host IS NULL, 'background', host) AS host,
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event_name AS event,
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count_star AS total,
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sum_timer_wait AS total_latency,
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avg_timer_wait AS avg_latency,
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max_timer_wait AS max_latency
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FROM performance_schema.events_waits_summary_by_host_by_event_name
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WHERE event_name != 'idle'
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AND sum_timer_wait > 0
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ORDER BY host, sum_timer_wait DESC;

‎views/p_s/waits_by_user_by_latency.sql‎

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/*
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* View: waits_by_user_by_latency
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*
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* Lists the top wait events by their total latency, ignoring idle (this may be very large).
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* Lists the top wait events per user by their total latency, ignoring idle (this may be very large).
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*
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* mysql> select * from waits_by_user_by_latency;
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* +------+-----------------------------------------------------+--------+---------------+-------------+-------------+
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avg_latency,
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max_latency
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) AS
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SELECT user,
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SELECT IF(user IS NULL, 'background', user) AS user,
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event_name AS event,
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count_star AS total,
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sys.format_time(sum_timer_wait) AS total_latency,
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ORDER BY user, sum_timer_wait DESC;
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/*
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* View: waits_by_user_by_latency_raw
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* View: waits_by_user_by_latency
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*
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* Lists the top wait events by their total latency, ignoring idle (this may be very large).
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* Lists the top wait events per user by their total latency, ignoring idle (this may be very large).
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*
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* mysql> select * from x$waits_by_user_by_latency;
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* +------+-----------------------------------------------------+--------+----------------+-------------+--------------+
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avg_latency,
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max_latency
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) AS
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SELECT user,
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SELECT IF(user IS NULL, 'background', user) AS user,
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event_name AS event,
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count_star AS total,
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sum_timer_wait AS total_latency,

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