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MarkLeithMarkLeith
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Merge pull request #31 from JesperWisborgKrogh/dev/20141021_innodb_lock_waits
Merge innodb_lock_waits view from Jesper
2 parents 7ddf1d7 + 59f198c commit 6b03402

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‎README.md‎

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@@ -146,6 +146,35 @@ mysql> select * from innodb_buffer_stats_by_table;
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+--------------------------+------------------------------------+------------+-----------+-------+--------------+-----------+-------------+
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```
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#### innodb_lock_waits / x$innodb_lock_waits
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##### Description
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Gives a snapshot of which InnoDB locks transactions are waiting for.
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##### Example
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```SQL
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mysql> SELECT * FROM innodb_lock_waits\G
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*************************** 1. row ***************************
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waiting_trx_id: 805505
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waiting_thread: 78
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waiting_query: UPDATE t1 SET val = 'c2' WHERE id = 3
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waiting_lock_id: 805505:132:3:28
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waiting_lock_mode: X
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waiting_lock_type: RECORD
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waiting_lock_table: `db1`.`t1`
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waiting_lock_index: PRIMARY
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blocking_trx_id: 805504
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blocking_thread: 77
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blocking_query: UPDATE t1 SET val = CONCAT('c1', SLEEP(10)) WHERE id = 3
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blocking_lock_id: 805504:132:3:28
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blocking_lock_mode: X
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blocking_lock_type: RECORD
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blocking_lock_table: `db1`.`t1`
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blocking_lock_index: PRIMARY
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```
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#### io_by_thread_by_latency / x$io_by_thread_by_latency
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##### Description

‎sys_56.sql‎

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@@ -31,6 +31,7 @@ SOURCE ./functions/ps_thread_stack.sql
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SOURCE ./views/i_s/innodb_buffer_stats_by_schema.sql
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SOURCE ./views/i_s/innodb_buffer_stats_by_table.sql
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SOURCE ./views/i_s/innodb_lock_waits.sql
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SOURCE ./views/i_s/schema_object_overview.sql
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SOURCE ./views/p_s/ps_check_lost_instrumentation.sql

‎sys_57.sql‎

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@@ -31,6 +31,7 @@ SOURCE ./functions/ps_thread_stack.sql
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SOURCE ./views/i_s/innodb_buffer_stats_by_schema.sql
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SOURCE ./views/i_s/innodb_buffer_stats_by_table.sql
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SOURCE ./views/i_s/innodb_lock_waits.sql
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SOURCE ./views/i_s/schema_object_overview.sql
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SOURCE ./views/p_s/ps_check_lost_instrumentation.sql

‎views/i_s/innodb_lock_waits.sql‎

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/* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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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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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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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: innodb_lock_waits
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*
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* Give a snapshot of which InnoDB locks transactions are waiting for.
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*
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* Versions: 5.1+ (5.1 required InnoDB Plugin with I_S tables)
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*
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* mysql> SELECT * FROM innodb_lock_waits\G
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* *************************** 1. row ***************************
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* waiting_trx_id: 805505
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* waiting_thread: 78
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* waiting_query: UPDATE t1 SET val = 'c2' WHERE id = 3
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* waiting_lock_id: 805505:132:3:28
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* waiting_lock_mode: X
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* waiting_lock_type: RECORD
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* waiting_lock_table: `db1`.`t1`
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* waiting_lock_index: PRIMARY
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* blocking_trx_id: 805504
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* blocking_thread: 77
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* blocking_query: UPDATE t1 SET val = CONCAT('c1', SLEEP(10)) WHERE id = 3
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* blocking_lock_id: 805504:132:3:28
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* blocking_lock_mode: X
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* blocking_lock_type: RECORD
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* blocking_lock_table: `db1`.`t1`
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* blocking_lock_index: PRIMARY
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* 1 row in set (0.00 sec)
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*
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*/
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CREATE OR REPLACE
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ALGORITHM = TEMPTABLE
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DEFINER = 'root'@'localhost'
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SQL SECURITY INVOKER
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VIEW innodb_lock_waits (
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waiting_trx_id,
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waiting_thread,
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waiting_query,
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waiting_lock_id,
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waiting_lock_mode,
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waiting_lock_type,
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waiting_lock_table,
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waiting_lock_index,
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blocking_trx_id,
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blocking_thread,
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blocking_query,
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blocking_lock_id,
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blocking_lock_mode,
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blocking_lock_type,
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blocking_lock_table,
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blocking_lock_index
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) AS
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SELECT r.trx_id AS waiting_trx_id,
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r.trx_mysql_thread_id AS waiting_thread,
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sys.format_statement(r.trx_query) AS waiting_query,
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rl.lock_id AS waiting_lock_id,
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rl.lock_mode AS waiting_lock_mode,
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rl.lock_type AS waiting_lock_type,
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rl.lock_table AS waiting_lock_table,
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rl.lock_index AS waiting_lock_index,
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b.trx_id AS blocking_trx_id,
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b.trx_mysql_thread_id AS blocking_thread,
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sys.format_statement(b.trx_query) AS blocking_query,
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bl.lock_id AS blocking_lock_id,
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bl.lock_mode AS blocking_lock_mode,
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bl.lock_type AS blocking_lock_type,
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bl.lock_table AS blocking_lock_table,
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bl.lock_index AS blocking_lock_index
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FROM information_schema.INNODB_LOCK_WAITS w
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INNER JOIN information_schema.INNODB_TRX b ON b.trx_id = w.blocking_trx_id
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INNER JOIN information_schema.INNODB_TRX r ON r.trx_id = w.requesting_trx_id
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INNER JOIN information_schema.INNODB_LOCKS bl ON bl.lock_id = w.blocking_lock_id
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INNER JOIN information_schema.INNODB_LOCKS rl ON rl.lock_id = w.requested_lock_id;
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/*
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* View: x$innodb_lock_waits
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*
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* Give a snapshot of which InnoDB locks transactions are waiting for.
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*
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* Versions: 5.1+ (5.1 required InnoDB Plugin with I_S tables)
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*
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* mysql> SELECT * FROM x$innodb_lock_waits\G
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* *************************** 1. row ***************************
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* waiting_trx_id: 805505
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* waiting_thread: 78
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* waiting_query: UPDATE t1 SET val = 'c2' WHERE id = 3
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* waiting_lock_id: 805505:132:3:28
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* waiting_lock_mode: X
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* waiting_lock_type: RECORD
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* waiting_lock_table: `db1`.`t1`
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* waiting_lock_index: PRIMARY
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* blocking_trx_id: 805504
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* blocking_thread: 77
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* blocking_query: UPDATE t1 SET val = CONCAT('c1', SLEEP(10)) WHERE id = 3
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* blocking_lock_id: 805504:132:3:28
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* blocking_lock_mode: X
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* blocking_lock_type: RECORD
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* blocking_lock_table: `db1`.`t1`
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* blocking_lock_index: PRIMARY
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* 1 row in set (0.00 sec)
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*
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*/
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CREATE OR REPLACE
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ALGORITHM = TEMPTABLE
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DEFINER = 'root'@'localhost'
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SQL SECURITY INVOKER
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VIEW x$innodb_lock_waits (
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waiting_trx_id,
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waiting_thread,
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waiting_query,
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waiting_lock_id,
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waiting_lock_mode,
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waiting_lock_type,
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waiting_lock_table,
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waiting_lock_index,
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blocking_trx_id,
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blocking_thread,
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blocking_query,
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blocking_lock_id,
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blocking_lock_mode,
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blocking_lock_type,
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blocking_lock_table,
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blocking_lock_index
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) AS
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SELECT r.trx_id AS waiting_trx_id,
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r.trx_mysql_thread_id AS waiting_thread,
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r.trx_query AS waiting_query,
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rl.lock_id AS waiting_lock_id,
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rl.lock_mode AS waiting_lock_mode,
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rl.lock_type AS waiting_lock_type,
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rl.lock_table AS waiting_lock_table,
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rl.lock_index AS waiting_lock_index,
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b.trx_id AS blocking_trx_id,
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b.trx_mysql_thread_id AS blocking_thread,
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b.trx_query AS blocking_query,
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bl.lock_id AS blocking_lock_id,
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bl.lock_mode AS blocking_lock_mode,
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bl.lock_type AS blocking_lock_type,
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bl.lock_table AS blocking_lock_table,
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bl.lock_index AS blocking_lock_index
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FROM information_schema.INNODB_LOCK_WAITS w
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INNER JOIN information_schema.INNODB_TRX b ON b.trx_id = w.blocking_trx_id
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INNER JOIN information_schema.INNODB_TRX r ON r.trx_id = w.requesting_trx_id
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INNER JOIN information_schema.INNODB_LOCKS bl ON bl.lock_id = w.blocking_lock_id
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INNER JOIN information_schema.INNODB_LOCKS rl ON rl.lock_id = w.requested_lock_id;

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