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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/* Copyright (c) 2014, 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$ps_schema_table_statistics_io
*
* Helper view for schema_table_statistics
* Having this view with ALGORITHM = TEMPTABLE means MySQL can use the optimizations for
* materialized views to improve the overall performance.
*
*/
CREATE OR REPLACE
ALGORITHM = TEMPTABLE
DEFINER = 'root'@'localhost'
SQL SECURITY INVOKER
VIEW x$ps_schema_table_statistics_io (
table_schema,
table_name,
count_read,
sum_number_of_bytes_read,
sum_timer_read,
count_write,
sum_number_of_bytes_write,
sum_timer_write,
count_misc,
sum_timer_misc
) AS
SELECT extract_schema_from_file_name(file_name) AS table_schema,
extract_table_from_file_name(file_name) AS table_name,
count_read, sum_number_of_bytes_read, sum_timer_read,
count_write, sum_number_of_bytes_write, sum_timer_write,
count_misc, sum_timer_misc
FROM performance_schema.file_summary_by_instance;
/*
* View: schema_table_statistics
*
* Statistics around tables.
*
* Ordered by the total wait time descending - top tables are most contended.
*
* mysql> select * from schema_table_statistics limit 1\G
* *************************** 1. row ***************************
* table_schema: mem
* table_name: mysqlserver
* rows_fetched: 27087
* fetch_latency: 442.72 ms
* rows_inserted: 2
* insert_latency: 185.04 µs
* rows_updated: 5096
* update_latency: 1.39 s
* rows_deleted: 0
* delete_latency: 0 ps
* io_read_requests: 2565
* io_read_bytes: 1121627
* io_read_latency: 10.07 ms
* io_write_requests: 1691
* io_write_bytes: 128383
* io_write_latency: 14.17 ms
* io_misc_requests: 2698
* io_misc_latency: 433.66 ms
*
*/
CREATE OR REPLACE
ALGORITHM = TEMPTABLE
DEFINER = 'root'@'localhost'
SQL SECURITY INVOKER
VIEW schema_table_statistics (
table_schema,
table_name,
total_latency,
rows_fetched,
fetch_latency,
rows_inserted,
insert_latency,
rows_updated,
update_latency,
rows_deleted,
delete_latency,
io_read_requests,
io_read,
io_read_latency,
io_write_requests,
io_write,
io_write_latency,
io_misc_requests,
io_misc_latency
) AS
SELECT pst.object_schema AS table_schema,
pst.object_name AS table_name,
sys.format_time(pst.sum_timer_wait) AS total_latency,
pst.count_fetch AS rows_fetched,
sys.format_time(pst.sum_timer_fetch) AS fetch_latency,
pst.count_insert AS rows_inserted,
sys.format_time(pst.sum_timer_insert) AS insert_latency,
pst.count_update AS rows_updated,
sys.format_time(pst.sum_timer_update) AS update_latency,
pst.count_delete AS rows_deleted,
sys.format_time(pst.sum_timer_delete) AS delete_latency,
SUM(fsbi.count_read) AS io_read_requests,
sys.format_bytes(SUM(fsbi.sum_number_of_bytes_read)) AS io_read,
sys.format_time(SUM(fsbi.sum_timer_read)) AS io_read_latency,
SUM(fsbi.count_write) AS io_write_requests,
sys.format_bytes(SUM(fsbi.sum_number_of_bytes_write)) AS io_write,
sys.format_time(SUM(fsbi.sum_timer_write)) AS io_write_latency,
SUM(fsbi.count_misc) AS io_misc_requests,
sys.format_time(SUM(fsbi.sum_timer_misc)) AS io_misc_latency
FROM performance_schema.table_io_waits_summary_by_table AS pst
LEFT JOIN x$ps_schema_table_statistics_io AS fsbi
ON pst.object_schema = fsbi.table_schema
AND pst.object_name = fsbi.table_name
GROUP BY pst.object_schema, pst.object_name
ORDER BY pst.sum_timer_wait DESC;
/*
* View: x$schema_table_statistics
*
* Statistics around tables.
*
* Ordered by the total wait time descending - top tables are most contended.
*
* mysql> SELECT * FROM x$schema_table_statistics LIMIT 1\G
* *************************** 1. row ***************************
* table_schema: common_schema
* table_name: help_content
* rows_fetched: 0
* fetch_latency: 0
* rows_inserted: 169
* insert_latency: 409815527680
* rows_updated: 0
* update_latency: 0
* rows_deleted: 0
* delete_latency: 0
* io_read_requests: 14
* io_read: 1180
* io_read_latency: 52406770
* io_write_requests: 131
* io_write: 11719246
* io_write_latency: 133726902790
* io_misc_requests: 61
* io_misc_latency: 209081089750
*
*/
CREATE OR REPLACE
ALGORITHM = TEMPTABLE
DEFINER = 'root'@'localhost'
SQL SECURITY INVOKER
VIEW x$schema_table_statistics (
table_schema,
table_name,
total_latency,
rows_fetched,
fetch_latency,
rows_inserted,
insert_latency,
rows_updated,
update_latency,
rows_deleted,
delete_latency,
io_read_requests,
io_read,
io_read_latency,
io_write_requests,
io_write,
io_write_latency,
io_misc_requests,
io_misc_latency
) AS
SELECT pst.object_schema AS table_schema,
pst.object_name AS table_name,
pst.sum_timer_wait AS total_latency,
pst.count_fetch AS rows_fetched,
pst.sum_timer_fetch AS fetch_latency,
pst.count_insert AS rows_inserted,
pst.sum_timer_insert AS insert_latency,
pst.count_update AS rows_updated,
pst.sum_timer_update AS update_latency,
pst.count_delete AS rows_deleted,
pst.sum_timer_delete AS delete_latency,
SUM(fsbi.count_read) AS io_read_requests,
SUM(fsbi.sum_number_of_bytes_read) AS io_read,
SUM(fsbi.sum_timer_read) AS io_read_latency,
SUM(fsbi.count_write) AS io_write_requests,
SUM(fsbi.sum_number_of_bytes_write) AS io_write,
SUM(fsbi.sum_timer_write) AS io_write_latency,
SUM(fsbi.count_misc) AS io_misc_requests,
SUM(fsbi.sum_timer_misc) AS io_misc_latency
FROM performance_schema.table_io_waits_summary_by_table AS pst
LEFT JOIN x$ps_schema_table_statistics_io AS fsbi
ON pst.object_schema = fsbi.table_schema
AND pst.object_name = fsbi.table_name
GROUP BY pst.object_schema, pst.object_name
ORDER BY pst.sum_timer_wait DESC;
|
