1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
-- 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$user_summary_by_file_io_type
--
-- Summarizes file IO by event type per user.
--
-- When the user found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$user_summary_by_file_io_type;
-- +------------+--------------------------------------+-------+---------------+--------------+
-- | user | event_name | total | latency | max_latency |
-- +------------+--------------------------------------+-------+---------------+--------------+
-- | background | wait/io/file/sql/FRM | 871 | 168148450470 | 18482624810 |
-- | background | wait/io/file/innodb/innodb_data_file | 173 | 129564287450 | 34087423890 |
-- | background | wait/io/file/innodb/innodb_log_file | 20 | 77525706960 | 60657475320 |
-- | background | wait/io/file/myisam/dfile | 40 | 6544493800 | 4580546230 |
-- | background | wait/io/file/mysys/charset | 3 | 4793558770 | 4713476430 |
-- | background | wait/io/file/myisam/kfile | 67 | 4384332810 | 300035450 |
-- | background | wait/io/file/sql/ERRMSG | 5 | 2717434850 | 1687316280 |
-- | background | wait/io/file/sql/pid | 3 | 266301490 | 185468920 |
-- | background | wait/io/file/sql/casetest | 5 | 246814360 | 150193030 |
-- | background | wait/io/file/sql/global_ddl_log | 2 | 21236410 | 18593640 |
-- | root | wait/io/file/sql/file_parser | 1422 | 4801104756760 | 135138518970 |
-- | root | wait/io/file/sql/FRM | 865 | 85818594810 | 9812303410 |
-- | root | wait/io/file/myisam/kfile | 1073 | 37143664870 | 15793838190 |
-- | root | wait/io/file/myisam/dfile | 2991 | 25528215700 | 5252232050 |
-- | root | wait/io/file/sql/dbopt | 20 | 1067339780 | 153073310 |
-- | root | wait/io/file/sql/misc | 4 | 59713030 | 33752810 |
-- | root | wait/io/file/archive/data | 1 | 13907530 | 13907530 |
-- +------------+--------------------------------------+-------+---------------+--------------+
--
CREATE OR REPLACE
ALGORITHM = MERGE
DEFINER = 'mariadb.sys'@'localhost'
SQL SECURITY INVOKER
VIEW x$user_summary_by_file_io_type (
user,
event_name,
total,
latency,
max_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
event_name,
count_star AS total,
sum_timer_wait AS latency,
max_timer_wait AS max_latency
FROM performance_schema.events_waits_summary_by_user_by_event_name
WHERE event_name LIKE 'wait/io/file%'
AND count_star > 0
ORDER BY user, sum_timer_wait DESC;
|
