95 lines
3.2 KiB
SQL
95 lines
3.2 KiB
SQL
-- Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; version 2 of the License.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program; if not, write to the Free Software
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-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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--
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-- View: schema_table_statistics
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--
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-- Statistics around tables.
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--
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-- Ordered by the total wait time descending - top tables are most contended.
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--
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-- mysql> SELECT * FROM schema_table_statistics\G
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-- *************************** 1. row ***************************
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-- table_schema: sys
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-- table_name: sys_config
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-- total_latency: 0 ps
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-- rows_fetched: 0
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-- fetch_latency: 0 ps
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-- rows_inserted: 0
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-- insert_latency: 0 ps
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-- rows_updated: 0
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-- update_latency: 0 ps
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-- rows_deleted: 0
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-- delete_latency: 0 ps
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-- io_read_requests: 8
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-- io_read: 2.28 KiB
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-- io_read_latency: 727.32 us
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-- io_write_requests: 0
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-- io_write: 0 bytes
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-- io_write_latency: 0 ps
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-- io_misc_requests: 10
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-- io_misc_latency: 126.88 us
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--
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CREATE OR REPLACE
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ALGORITHM = TEMPTABLE
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DEFINER = 'mysql.sys'@'localhost'
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SQL SECURITY INVOKER
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VIEW schema_table_statistics (
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table_schema,
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table_name,
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total_latency,
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rows_fetched,
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fetch_latency,
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rows_inserted,
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insert_latency,
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rows_updated,
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update_latency,
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rows_deleted,
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delete_latency,
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io_read_requests,
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io_read,
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io_read_latency,
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io_write_requests,
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io_write,
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io_write_latency,
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io_misc_requests,
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io_misc_latency
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) AS
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SELECT pst.object_schema AS table_schema,
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pst.object_name AS table_name,
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sys.format_time(pst.sum_timer_wait) AS total_latency,
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pst.count_fetch AS rows_fetched,
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sys.format_time(pst.sum_timer_fetch) AS fetch_latency,
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pst.count_insert AS rows_inserted,
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sys.format_time(pst.sum_timer_insert) AS insert_latency,
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pst.count_update AS rows_updated,
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sys.format_time(pst.sum_timer_update) AS update_latency,
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pst.count_delete AS rows_deleted,
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sys.format_time(pst.sum_timer_delete) AS delete_latency,
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fsbi.count_read AS io_read_requests,
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sys.format_bytes(fsbi.sum_number_of_bytes_read) AS io_read,
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sys.format_time(fsbi.sum_timer_read) AS io_read_latency,
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fsbi.count_write AS io_write_requests,
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sys.format_bytes(fsbi.sum_number_of_bytes_write) AS io_write,
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sys.format_time(fsbi.sum_timer_write) AS io_write_latency,
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fsbi.count_misc AS io_misc_requests,
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sys.format_time(fsbi.sum_timer_misc) AS io_misc_latency
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FROM performance_schema.table_io_waits_summary_by_table AS pst
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LEFT JOIN x$ps_schema_table_statistics_io AS fsbi
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ON pst.object_schema = fsbi.table_schema
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AND pst.object_name = fsbi.table_name
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ORDER BY pst.sum_timer_wait DESC;
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