mirror of
https://github.com/MariaDB/server.git
synced 2025-07-30 16:24:05 +03:00
c2b6916393
* it isn't "pfs" function, don't call it Item_func_pfs, don't use item_pfsfunc.* * tests don't depend on performance schema, put in the main suite * inherit from Item_str_ascii_func * use connection collation, not utf8mb3_general_ci * set result length in fix_length_and_dec * do not set maybe_null * use my_snprintf() where possible * don't set m_value.ptr on every invocation * update sys schema to use the format_pico_time() * len must be size_t (compilation error on Windows) * the correct function name for double->double is fabs() * drop volatile hack
66 lines
3.4 KiB
SQL
66 lines
3.4 KiB
SQL
-- 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: schema_index_statistics
|
|
--
|
|
-- Statistics around indexes.
|
|
--
|
|
-- Ordered by the total wait time descending - top indexes are most contended.
|
|
--
|
|
-- mysql> select * from schema_index_statistics limit 5;
|
|
-- +------------------+-------------+------------+---------------+----------------+---------------+----------------+--------------+----------------+--------------+----------------+
|
|
-- | table_schema | table_name | index_name | rows_selected | select_latency | rows_inserted | insert_latency | rows_updated | update_latency | rows_deleted | delete_latency |
|
|
-- +------------------+-------------+------------+---------------+----------------+---------------+----------------+--------------+----------------+--------------+----------------+
|
|
-- | mem | mysqlserver | PRIMARY | 6208 | 108.27 ms | 0 | 0 ps | 5470 | 1.47 s | 0 | 0 ps |
|
|
-- | mem | innodb | PRIMARY | 4666 | 76.27 ms | 0 | 0 ps | 4454 | 571.47 ms | 0 | 0 ps |
|
|
-- | mem | connection | PRIMARY | 1064 | 20.98 ms | 0 | 0 ps | 1064 | 457.30 ms | 0 | 0 ps |
|
|
-- | mem | environment | PRIMARY | 5566 | 151.17 ms | 0 | 0 ps | 694 | 252.57 ms | 0 | 0 ps |
|
|
-- | mem | querycache | PRIMARY | 1698 | 27.99 ms | 0 | 0 ps | 1698 | 371.72 ms | 0 | 0 ps |
|
|
-- +------------------+-------------+------------+---------------+----------------+---------------+----------------+--------------+----------------+--------------+----------------+
|
|
--
|
|
|
|
CREATE OR REPLACE
|
|
ALGORITHM = MERGE
|
|
DEFINER = 'mariadb.sys'@'localhost'
|
|
SQL SECURITY INVOKER
|
|
VIEW schema_index_statistics (
|
|
table_schema,
|
|
table_name,
|
|
index_name,
|
|
rows_selected,
|
|
select_latency,
|
|
rows_inserted,
|
|
insert_latency,
|
|
rows_updated,
|
|
update_latency,
|
|
rows_deleted,
|
|
delete_latency
|
|
) AS
|
|
SELECT OBJECT_SCHEMA AS table_schema,
|
|
OBJECT_NAME AS table_name,
|
|
INDEX_NAME as index_name,
|
|
COUNT_FETCH AS rows_selected,
|
|
format_pico_time(SUM_TIMER_FETCH) AS select_latency,
|
|
COUNT_INSERT AS rows_inserted,
|
|
format_pico_time(SUM_TIMER_INSERT) AS insert_latency,
|
|
COUNT_UPDATE AS rows_updated,
|
|
format_pico_time(SUM_TIMER_UPDATE) AS update_latency,
|
|
COUNT_DELETE AS rows_deleted,
|
|
format_pico_time(SUM_TIMER_INSERT) AS delete_latency
|
|
FROM performance_schema.table_io_waits_summary_by_index_usage
|
|
WHERE index_name IS NOT NULL
|
|
ORDER BY sum_timer_wait DESC;
|