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ID# Date Updated Type Status Sev Version OS CPU Summary
602612011-02-26
0:59
2016-11-12
22:57
MySQL Cluster: Cluster (NDB) storage engineVerified
(2693 days)
S5mysql-cluster-gpl-7.1.9aAnyAnyAre transaction hints needed in these situation?
665632012-08-28
5:37
2012-08-28
6:55
MySQL Server: InnoDB Plugin storage engineVerified
(4230 days)
S55.1,5.6AnyAnyreduce the number of redundant calls to btr_cur_optimistic_insert()
691182013-05-02
2:28
2013-05-02
14:00
MySQL Server: Command-line ClientsVerified
(3983 days)
S55.6, 5.7AnyAnyWasted work in method get_table_structure()
685722013-03-05
10:57
2014-02-19
16:19
MySQL Server: Federated storage engineVerified
(4040 days)
S35.5.25a, 5.5.31AnyAnyFEDERATED using SHOW TABLE STATUS causes performance problems for InnoDB tables
643402012-02-15
14:07
2013-06-14
15:35
MySQL Server: InnoDB Plugin storage engineVerified
(3940 days)
S55.1.52, 5.1.61AnyAnyrace on no_flush event during buf_flush_free_margin
755042015-01-14
12:52
2015-01-22
14:51
MySQL Server: InnoDB storage engineVerified
(3353 days)
S5AnyAnybtr_search_guess_on_hash makes found block young twice?
711402013-12-13
9:16
2015-07-31
8:59
MySQL Server: OptimizerVerified
(3163 days)
S25.1, 5.5, 5.6.15, 5.7.7AnyAnyOptimizer does NOT use range checks in typical self-join for InnoDB tables
620182011-07-28
15:15
2018-02-11
20:45
MySQL Server: InnoDB storage engineVerified
(4089 days)
S55.6.3AnyAnyinnodb adaptive hash index mutex contention
759622015-02-19
3:14
2015-03-03
20:46
MySQL Server: InnoDB storage engineVerified
(3313 days)
S35.6.24, 5.7.6AnyAnyInnodb calls fsync when freeing a LRU page to fulfill page request
813762016-05-11
6:48
2018-07-16
8:12
MySQL Server: InnoDB storage engineVerified
(2877 days)
S55.7AnyAnySingle page flushing should be removed
303422007-08-09
18:52
2015-10-07
14:54
MySQL Server: OptimizerVerified
(3095 days)
S55.0.37, 5.6.17AnyAnyEquality propagation can make optimization much slower
816302016-05-28
5:46
2016-08-31
6:30
MySQL Server: ReplicationVerified
(2766 days)
S55.7.12AnyAnyMySQL 5.7 is 37-45% slower then 5.6 when using binlogging due to defaults change
351652008-03-08
17:48
2022-12-04
20:45
MySQL Server: CSVVerified
(5860 days)
S55.1AnyAnyLogging to table is slow for large queries
759812015-02-20
13:56
2017-11-05
7:12
MySQL Server: InnoDB storage engineVerified
(3276 days)
S55.7.6AnyAnyMySQL 5.7.5 30% slower than 5.6.23 for 1 thread write
744082014-10-15
19:52
2018-07-04
15:16
MySQL Server: InnoDB storage engineVerified
(2094 days)
S55.6, 5.7, 8.0AnyAnysrv_conc_enter_innodb() is not optimal
915852018-07-10
1:16
2018-08-27
11:06
MySQL Server: Stored RoutinesVerified
(2088 days)
S55.7, 8.0, 8.0.11, 5.7.23AnyAny“dead” code inside the stored proc or function can significantly slow it down
987712020-02-28
6:29
2020-03-02
18:39
MySQL Server: OptimizerVerified
(1490 days)
S25.7, 5.7.29AnyAnyPerformance impact while selecting data from a JSON type column
994322020-05-04
8:09
2020-05-05
12:04
MySQL Server: InnoDB storage engineVerified
(1424 days)
S58.0.20AnyARMImproving memory barrier during rseg allocation
1004322020-08-05
7:55
2020-08-05
14:03
MySQL Server: Performance SchemaVerified
(1331 days)
S58.0.21AnyARMOptimal memory-barrier for performance-schema counter
1001192020-07-06
7:07
2020-08-14
13:55
MySQL Server: InnoDB storage engineVerified
(1322 days)
S58.0.20AnyARMSwitch to use relaxed memory barrier for redo-log counters
1000912020-07-02
12:23
2020-07-03
8:48
Connector / PythonVerified
(1364 days)
S58.0.18, 8.0.20AnyAnymysqlx interface is a lot slower than the connector.python interface
1046152021-08-13
10:26
2021-08-13
11:36
MySQL Server: LoggingVerified
(958 days)
S58.0Any (rhel7.4)Any (intel-x86)trx commit slow if there are too many binlog files to purge while rotating
1107792023-04-24
11:32
2023-05-12
5:49
MySQL Server: OptimizerVerified
(321 days)
S58.0.33, 5.7.42AnyAnyIN clause cause pick bad performan index
1140562024-02-19
23:03
2024-02-22
10:56
MySQL Server: Prepared statementsVerified
(35 days)
S58.0.32, 8.0.22+AnyAnyPerformance degredation using REGEXP in statement with parameters vs query
589282010-12-14
20:58
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4853 days)
S35.1-bugteamAnyAny"not exists" optimization not applied if relevant table is not single inner one
427052009-02-09
16:37
2011-02-16
23:43
MySQL Server: GeneralVerified
(5484 days)
S35.1.30AnyAnyReduce malloc/free during query lifecycle.
403672008-10-28
8:55
2011-02-16
23:43
MySQL Server: Information schemaVerified
(5544 days)
S35.1.28, 5.1.29, 5.0, 5.1 bzrAnyAnySHOW on a broad view is taking too long
442012009-04-10
3:04
2018-09-09
20:45
MySQL Server: OptimizerVerified
(5035 days)
S35.1.32, 5.1.35-bzr, 6.0.11-bzr, 5.0, 5.6.99AnyAnyPerformance problem with View
503672010-01-15
14:12
2011-02-16
23:44
MySQL Server: GeneralVerified
(5124 days)
S55.1.42, 5.1 bzrAny (MS Windows 32 bits, Mac)AnyREPLACE has quadradic computational complexity on windows server (but not linux)
383972008-07-27
20:13
2018-09-09
20:45
MySQL Server: OptimizerVerified
(5722 days)
S35.1.26, 5.0.62AnyAnyselect distinct + order by desc is executed inefficiently
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