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ID# Date Updated Type Status Sev Version OS CPU Summary
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
1059822021-12-27
8:11
2022-01-03
8:02
MySQL Server: Storage EnginesVerified
(815 days)
S5all, 5.7, 8.0LinuxAnyhard-coded libaio API parameter may not helpful to performance
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
1129022023-10-31
14:39
2024-02-26
11:07
MySQL Server: OptimizerVerified
(31 days)
S58.0.31, 8.0.35Linux (n.a.)x86 (x86_64)Optimizer in MySQL 8 is significantly slower on dependent subqueries than 5.7
1143312024-03-12
21:53
2024-03-19
9:48
MySQL Server: InnoDB storage engineVerified
(9 days)
S58.0.*, 8.0.36Linuxx86MySQL get high insert latency in low concurrency
603512011-03-04
22:15
2013-01-15
15:27
MySQL ServerVerified
(4090 days)
S55.1.55AnyAnytrim same character processes data only byte wise (continue of bug14637 (4))
351652008-03-08
17:48
2022-12-04
20:45
MySQL Server: CSVVerified
(5860 days)
S55.1AnyAnyLogging to table is slow for large queries
463762009-07-24
17:05
2018-09-09
20:45
MySQL Server: OptimizerVerified
(5356 days)
S55.0.85, 5.1.36, 5.1.38, 5.1.39Windows (XP)AnyOptimizer choose wrong index even when where clause and order-by are covered
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)
559792010-08-13
22:05
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4973 days)
S55.1.39LinuxAnyKey not used if IN() list contains mix of strings and integers
597272011-01-25
21:36
2016-12-04
20:45
MySQL Server: InnoDB storage engineVerifiedS55.1 plugin, 5.5, 5.6AnyAnyLRU search can be inefficient with compression
603452011-03-04
17:11
2013-01-15
15:25
MySQL ServerVerified
(4090 days)
S55.1.55 6.0.11AnyAnytrim trailing spaces processes data only byte wise (the continue of bug14637)
603482011-03-04
20:14
2013-01-15
15:25
MySQL ServerVerified
(4090 days)
S55.1.55AnyAnytrim trailing spaces processes data only byte wise (continue of bug14637 (2))
603492011-03-04
21:20
2013-01-15
15:25
MySQL ServerVerified
(4090 days)
S55.1.55AnyAnytrim beginning spaces processes data only byte wise (continue of bug14637 (3))
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()
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?
783552015-09-07
15:53
2015-09-15
8:51
MySQL Server: OptimizerVerified
(3117 days)
S55.5.41, 5.5.46, 5.5.47Ubuntu (x64)Anynested select query not work on mysql 5.5 but it works well in mysql 5.6
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
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
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