mirror of
https://github.com/MariaDB/server.git
synced 2025-08-08 11:22:35 +03:00
c2b6916393
* it isn't "pfs" function, don't call it Item_func_pfs, don't use item_pfsfunc.* * tests don't depend on performance schema, put in the main suite * inherit from Item_str_ascii_func * use connection collation, not utf8mb3_general_ci * set result length in fix_length_and_dec * do not set maybe_null * use my_snprintf() where possible * don't set m_value.ptr on every invocation * update sys schema to use the format_pico_time() * len must be size_t (compilation error on Windows) * the correct function name for double->double is fabs() * drop volatile hack
58 lines
2.5 KiB
SQL
58 lines
2.5 KiB
SQL
-- 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: 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 us | write | 124 bytes |
|
|
-- | msandbox@localhost:1 | @@tmpdir/#sqlcf28_1_4e.MYI | 4.00 us | write | 2 bytes |
|
|
-- | msandbox@localhost:1 | @@tmpdir/#sqlcf28_1_4e.MYI | 56.34 us | close | NULL |
|
|
-- | msandbox@localhost:1 | @@tmpdir/#sqlcf28_1_4e.MYD | 53.93 us | close | NULL |
|
|
-- | msandbox@localhost:1 | @@tmpdir/#sqlcf28_1_4e.MYI | 104.05 ms | delete | NULL |
|
|
-- +----------------------+----------------------------------------+------------+-----------+-----------+
|
|
--
|
|
|
|
CREATE OR REPLACE
|
|
ALGORITHM = MERGE
|
|
DEFINER = 'mariadb.sys'@'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,
|
|
format_pico_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;
|