-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. -- -- This program is free software; you can redistribute it and/or modify -- it under the terms of the GNU General Public License as published by -- the Free Software Foundation; version 2 of the License. -- -- This program is distributed in the hope that it will be useful, -- but WITHOUT ANY WARRANTY; without even the implied warranty of -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -- GNU General Public License for more details. -- -- You should have received a copy of the GNU General Public License -- along with this program; if not, write to the Free Software -- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -- -- View: x$waits_global_by_latency -- -- Lists the top wait events by their total latency, ignoring idle (this may be very large). -- -- mysql> select * from x$waits_global_by_latency limit 5; -- +--------------------------------------+-------+---------------+-------------+--------------+ -- | event | total | total_latency | avg_latency | max_latency | -- +--------------------------------------+-------+---------------+-------------+--------------+ -- | wait/io/file/sql/file_parser | 679 | 3536136351540 | 5207858773 | 129860439800 | -- | wait/io/file/innodb/innodb_data_file | 195 | 848170566100 | 4349592637 | 350700491310 | -- | wait/io/file/sql/FRM | 1355 | 400428476500 | 295518990 | 44823120940 | -- | wait/io/file/innodb/innodb_log_file | 20 | 54298899070 | 2714944765 | 30108124800 | -- | wait/io/file/mysys/charset | 3 | 24244722970 | 8081574072 | 24151547420 | -- +--------------------------------------+-------+---------------+-------------+--------------+ -- CREATE OR REPLACE ALGORITHM = MERGE DEFINER = 'root'@'localhost' SQL SECURITY INVOKER VIEW x$waits_global_by_latency ( events, total, total_latency, avg_latency, max_latency ) AS SELECT event_name AS event, count_star AS total, sum_timer_wait AS total_latency, avg_timer_wait AS avg_latency, max_timer_wait AS max_latency FROM performance_schema.events_waits_summary_global_by_event_name WHERE event_name != 'idle' AND sum_timer_wait > 0 ORDER BY sum_timer_wait DESC;