-- 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$io_global_by_file_by_latency
--
-- Shows the top global IO consumers by latency by file.
--
-- mysql> select * from x$io_global_by_file_by_latency limit 5;
-- +--------------------------------------------------------------------------------------+-------+---------------+------------+--------------+-------------+---------------+------------+--------------+
-- | file                                                                                 | total | total_latency | count_read | read_latency | count_write | write_latency | count_misc | misc_latency |
-- +--------------------------------------------------------------------------------------+-------+---------------+------------+--------------+-------------+---------------+------------+--------------+
-- | /Users/mark/sandboxes/msb_5_7_2/data/sys/wait_classes_global_by_avg_latency_raw.frm~ |    30 |  513959738110 |          0 |            0 |           5 |     132130960 |         25 | 513827607150 |
-- | /Users/mark/sandboxes/msb_5_7_2/data/sys/innodb_buffer_stats_by_schema_raw.frm~      |    30 |  490149888410 |          0 |            0 |           5 |     483887040 |         25 | 489666001370 |
-- | /Users/mark/sandboxes/msb_5_7_2/data/sys/io_by_thread_by_latency_raw.frm~            |    30 |  427724241620 |          0 |            0 |           5 |     131399580 |         25 | 427592842040 |
-- | /Users/mark/sandboxes/msb_5_7_2/data/sys/innodb_buffer_stats_by_schema.frm~          |    30 |  406392559950 |          0 |            0 |           5 |     104082160 |         25 | 406288477790 |
-- | /Users/mark/sandboxes/msb_5_7_2/data/sys/statement_analysis_raw.frm~                 |    30 |  395527510430 |          0 |            0 |           5 |     118724840 |         25 | 395408785590 |
-- +--------------------------------------------------------------------------------------+-------+---------------+------------+--------------+-------------+---------------+------------+--------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$io_global_by_file_by_latency (
  file,
  total,
  total_latency,
  count_read,
  read_latency,
  count_write,
  write_latency,
  count_misc,
  misc_latency
) AS
SELECT file_name AS file, 
       count_star AS total, 
       sum_timer_wait AS total_latency,
       count_read,
       sum_timer_read AS read_latency,
       count_write,
       sum_timer_write AS write_latency,
       count_misc,
       sum_timer_misc AS misc_latency
  FROM performance_schema.file_summary_by_instance
 ORDER BY sum_timer_wait DESC;
