-- 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: io_global_by_file_by_bytes -- -- Shows the top global IO consumers by bytes usage by file. -- -- mysql> SELECT * FROM io_global_by_file_by_bytes LIMIT 5; -- +--------------------------------------------+------------+------------+-----------+-------------+---------------+-----------+------------+-----------+ -- | file | count_read | total_read | avg_read | count_write | total_written | avg_write | total | write_pct | -- +--------------------------------------------+------------+------------+-----------+-------------+---------------+-----------+------------+-----------+ -- | @@datadir/ibdata1 | 147 | 4.27 MiB | 29.71 KiB | 3 | 48.00 KiB | 16.00 KiB | 4.31 MiB | 1.09 | -- | @@datadir/mysql/proc.MYD | 347 | 85.35 KiB | 252 bytes | 111 | 19.08 KiB | 176 bytes | 104.43 KiB | 18.27 | -- | @@datadir/ib_logfile0 | 6 | 68.00 KiB | 11.33 KiB | 8 | 4.00 KiB | 512 bytes | 72.00 KiB | 5.56 | -- | /opt/mysql/5.5.33/share/english/errmsg.sys | 3 | 43.68 KiB | 14.56 KiB | 0 | 0 bytes | 0 bytes | 43.68 KiB | 0.00 | -- | /opt/mysql/5.5.33/share/charsets/Index.xml | 1 | 17.89 KiB | 17.89 KiB | 0 | 0 bytes | 0 bytes | 17.89 KiB | 0.00 | -- +--------------------------------------------+------------+------------+-----------+-------------+---------------+-----------+------------+-----------+ -- CREATE OR REPLACE ALGORITHM = MERGE DEFINER = 'root'@'localhost' SQL SECURITY INVOKER VIEW io_global_by_file_by_bytes ( file, count_read, total_read, avg_read, count_write, total_written, avg_write, total, write_pct ) AS SELECT sys.format_path(file_name) AS file, count_read, sys.format_bytes(sum_number_of_bytes_read) AS total_read, sys.format_bytes(IFNULL(sum_number_of_bytes_read / NULLIF(count_read, 0), 0)) AS avg_read, count_write, sys.format_bytes(sum_number_of_bytes_write) AS total_written, sys.format_bytes(IFNULL(sum_number_of_bytes_write / NULLIF(count_write, 0), 0.00)) AS avg_write, sys.format_bytes(sum_number_of_bytes_read + sum_number_of_bytes_write) AS total, IFNULL(ROUND(100-((sum_number_of_bytes_read/ NULLIF((sum_number_of_bytes_read+sum_number_of_bytes_write), 0))*100), 2), 0.00) AS write_pct FROM performance_schema.file_summary_by_instance ORDER BY sum_number_of_bytes_read + sum_number_of_bytes_write DESC;