-- 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: waits_global_by_latency -- -- Lists the top wait events by their total latency, ignoring idle (this may be very large). -- -- mysql> select * from waits_global_by_latency limit 5; -- +--------------------------------------+------------+---------------+-------------+-------------+ -- | event | total | total_latency | avg_latency | max_latency | -- +--------------------------------------+------------+---------------+-------------+-------------+ -- | wait/io/file/myisam/dfile | 3623719744 | 00:47:49.09 | 791.70 ns | 312.96 ms | -- | wait/io/table/sql/handler | 69114944 | 00:44:30.74 | 38.64 us | 879.49 ms | -- | wait/io/file/innodb/innodb_log_file | 28100261 | 00:37:42.12 | 80.50 us | 476.00 ms | -- | wait/io/socket/sql/client_connection | 200704863 | 00:18:37.81 | 5.57 us | 1.27 s | -- | wait/io/file/innodb/innodb_data_file | 2829403 | 00:08:12.89 | 174.20 us | 455.22 ms | -- +--------------------------------------+------------+---------------+-------------+-------------+ -- CREATE OR REPLACE ALGORITHM = MERGE DEFINER = 'root'@'localhost' SQL SECURITY INVOKER VIEW waits_global_by_latency ( events, total, total_latency, avg_latency, max_latency ) AS SELECT event_name AS event, count_star AS total, sys.format_time(sum_timer_wait) AS total_latency, sys.format_time(avg_timer_wait) AS avg_latency, sys.format_time(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;