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/* Copyright (c) 2014, 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: latest_file_io
*
* Shows the latest file IO, by file / thread.
*
* mysql> select * from latest_file_io limit 5;
* +----------------------+----------------------------------------+------------+-----------+-----------+
* | thread | file | latency | operation | requested |
* +----------------------+----------------------------------------+------------+-----------+-----------+
* | msandbox@localhost:1 | @@tmpdir/#sqlcf28_1_4e.MYI | 9.26 µs | write | 124 bytes |
* | msandbox@localhost:1 | @@tmpdir/#sqlcf28_1_4e.MYI | 4.00 µs | write | 2 bytes |
* | msandbox@localhost:1 | @@tmpdir/#sqlcf28_1_4e.MYI | 56.34 µs | close | NULL |
* | msandbox@localhost:1 | @@tmpdir/#sqlcf28_1_4e.MYD | 53.93 µs | close | NULL |
* | msandbox@localhost:1 | @@tmpdir/#sqlcf28_1_4e.MYI | 104.05 ms | delete | NULL |
* +----------------------+----------------------------------------+------------+-----------+-----------+
*
*/
CREATE OR REPLACE
ALGORITHM = MERGE
DEFINER = 'root'@'localhost'
SQL SECURITY INVOKER
VIEW latest_file_io (
thread,
file,
latency,
operation,
requested
) AS
SELECT IF(id IS NULL,
CONCAT(SUBSTRING_INDEX(name, '/', -1), ':', thread_id),
CONCAT(user, '@', host, ':', id)
) thread,
sys.format_path(object_name) file,
sys.format_time(timer_wait) AS latency,
operation,
sys.format_bytes(number_of_bytes) AS requested
FROM performance_schema.events_waits_history_long
JOIN performance_schema.threads USING (thread_id)
LEFT JOIN information_schema.processlist ON processlist_id = id
WHERE object_name IS NOT NULL
AND event_name LIKE 'wait/io/file/%'
ORDER BY timer_start;
/*
* View: x$latest_file_io
*
* Shows the latest file IO, by file / thread.
*
* mysql> SELECT * FROM x$latest_file_io LIMIT 5;
* +------------------+------------------------------------------------------------------------------------+-------------+-----------+-----------+
* | thread | file | latency | operation | requested |
* +------------------+------------------------------------------------------------------------------------+-------------+-----------+-----------+
* | root@localhost:6 | /Users/mark/sandboxes/msb_5_7_2/data/ps_helper/user_summary_by_statement_type.frm~ | 26152490 | write | 4210 |
* | root@localhost:6 | /Users/mark/sandboxes/msb_5_7_2/data/ps_helper/user_summary_by_statement_type.frm~ | 30062722690 | sync | NULL |
* | root@localhost:6 | /Users/mark/sandboxes/msb_5_7_2/data/ps_helper/user_summary_by_statement_type.frm~ | 34144890 | close | NULL |
* | root@localhost:6 | /Users/mark/sandboxes/msb_5_7_2/data/ps_helper/check_lost_instrumentation.frm | 113001980 | open | NULL |
* | root@localhost:6 | /Users/mark/sandboxes/msb_5_7_2/data/ps_helper/check_lost_instrumentation.frm | 9553180 | read | 10 |
* +------------------+------------------------------------------------------------------------------------+-------------+-----------+-----------+
*
*/
CREATE OR REPLACE
ALGORITHM = MERGE
DEFINER = 'root'@'localhost'
SQL SECURITY INVOKER
VIEW x$latest_file_io (
thread,
file,
latency,
operation,
requested
) AS
SELECT IF(id IS NULL,
CONCAT(SUBSTRING_INDEX(name, '/', -1), ':', thread_id),
CONCAT(user, '@', host, ':', id)
) thread,
object_name file,
timer_wait AS latency,
operation,
number_of_bytes AS requested
FROM performance_schema.events_waits_history_long
JOIN performance_schema.threads USING (thread_id)
LEFT JOIN information_schema.processlist ON processlist_id = id
WHERE object_name IS NOT NULL
AND event_name LIKE 'wait/io/file/%'
ORDER BY timer_start;
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