-- 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$innodb_buffer_stats_by_schema -- -- Summarizes the output of the INFORMATION_SCHEMA.INNODB_BUFFER_PAGE -- table, aggregating by schema -- -- mysql> select * from x$innodb_buffer_stats_by_schema; -- +--------------------------+-----------+--------+-------+--------------+-----------+-------------+ -- | object_schema | allocated | data | pages | pages_hashed | pages_old | rows_cached | -- +--------------------------+-----------+--------+-------+--------------+-----------+-------------+ -- | mem30_trunk__instruments | 1769472 | 522272 | 108 | 108 | 108 | 3885 | -- | InnoDB System | 704512 | 360054 | 43 | 43 | 43 | 862 | -- | mem30_trunk__events | 81920 | 22125 | 5 | 5 | 5 | 229 | -- +--------------------------+-----------+--------+-------+--------------+-----------+-------------+ -- CREATE OR REPLACE ALGORITHM = TEMPTABLE DEFINER = 'root'@'localhost' SQL SECURITY INVOKER VIEW x$innodb_buffer_stats_by_schema ( object_schema, allocated, data, pages, pages_hashed, pages_old, rows_cached ) AS SELECT IF(LOCATE('.', ibp.table_name) = 0, 'InnoDB System', REPLACE(SUBSTRING_INDEX(ibp.table_name, '.', 1), '`', '')) AS object_schema, SUM(IF(ibp.compressed_size = 0, 16384, compressed_size)) AS allocated, SUM(ibp.data_size) AS data, COUNT(ibp.page_number) AS pages, COUNT(IF(ibp.is_hashed = 'YES', 1, 0)) AS pages_hashed, COUNT(IF(ibp.is_old = 'YES', 1, 0)) AS pages_old, ROUND(IFNULL(SUM(ibp.number_records)/NULLIF(COUNT(DISTINCT ibp.index_name), 0), 0)) AS rows_cached FROM information_schema.innodb_buffer_page ibp WHERE table_name IS NOT NULL GROUP BY object_schema ORDER BY SUM(IF(ibp.compressed_size = 0, 16384, compressed_size)) DESC;