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ID# Date Updated Type Status Sev Version OS CPU Summary
219782006-09-01
22:13
2011-02-16
23:43
MySQL Server: OptionsVerified
(5959 days)
S34.0.18, 5.0, 6.0.10, 5.5Windows (Windows 2000)Any'flush_time' value set for 1800 sec. on Non Win9x/Me installs by default
589282010-12-14
20:58
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4854 days)
S35.1-bugteamAnyAny"not exists" optimization not applied if relevant table is not single inner one
915852018-07-10
1:16
2018-08-27
11:06
MySQL Server: Stored RoutinesVerified
(2089 days)
S55.7, 8.0, 8.0.11, 5.7.23AnyAny“dead” code inside the stored proc or function can significantly slow it down
483592009-10-27
19:24
2012-05-18
20:19
MySQL Cluster: Cluster (NDB) storage engineIn progress
(5027 days)
S3mysql-5.1-telco-7.1Linux (RHEL 4)AnyALTER TABLE xx COMMENT - locks large tables
602612011-02-26
0:59
2016-11-12
22:57
MySQL Cluster: Cluster (NDB) storage engineVerified
(2694 days)
S5mysql-cluster-gpl-7.1.9aAnyAnyAre transaction hints needed in these situation?
755042015-01-14
12:52
2015-01-22
14:51
MySQL Server: InnoDB storage engineVerified
(3354 days)
S5AnyAnybtr_search_guess_on_hash makes found block young twice?
274522007-03-26
17:35
2018-09-09
20:45
MySQL Server: OptimizerVerified
(5611 days)
S35.0.40-BK, 5.0.24a-debian-log, 5.1.31-bzr, 6.0.7-alpha, 6.0.9-bzrLinuxAnyCorrelated subquery produces inefficient optimizer plan for INFORMATION_SCHEMA
303422007-08-09
18:52
2015-10-07
14:54
MySQL Server: OptimizerVerified
(3096 days)
S55.0.37, 5.6.17AnyAnyEquality propagation can make optimization much slower
685722013-03-05
10:57
2014-02-19
16:19
MySQL Server: Federated storage engineVerified
(4041 days)
S35.5.25a, 5.5.31AnyAnyFEDERATED using SHOW TABLE STATUS causes performance problems for InnoDB tables
1059822021-12-27
8:11
2022-01-03
8:02
MySQL Server: Storage EnginesVerified
(816 days)
S5all, 5.7, 8.0LinuxAnyhard-coded libaio API parameter may not helpful to performance
831512016-09-26
14:27
2021-09-14
10:08
MySQL Server: Connection HandlingVerified
(1892 days)
S25.6.33CentOSAnyhigh number of SHOW WARNINGS can stall server if compressed protocol in use
994322020-05-04
8:09
2020-05-05
12:04
MySQL Server: InnoDB storage engineVerified
(1425 days)
S58.0.20AnyARMImproving memory barrier during rseg allocation
1107792023-04-24
11:32
2023-05-12
5:49
MySQL Server: OptimizerVerified
(322 days)
S58.0.33, 5.7.42AnyAnyIN clause cause pick bad performan index
620182011-07-28
15:15
2018-02-11
20:45
MySQL Server: InnoDB storage engineVerified
(4090 days)
S55.6.3AnyAnyinnodb adaptive hash index mutex contention
759622015-02-19
3:14
2015-03-03
20:46
MySQL Server: InnoDB storage engineVerified
(3314 days)
S35.6.24, 5.7.6AnyAnyInnodb calls fsync when freeing a LRU page to fulfill page request
559792010-08-13
22:05
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4974 days)
S55.1.39LinuxAnyKey not used if IN() list contains mix of strings and integers
351652008-03-08
17:48
2022-12-04
20:45
MySQL Server: CSVVerified
(5861 days)
S55.1AnyAnyLogging to table is slow for large queries
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
569242010-09-22
11:26
2018-06-24
20:45
MySQL Workbench: SQL EditorVerified
(4501 days)
S25.2.28Linux (Ubuntu 10.04)AnyMemory leak? Possibly not a bug.
478842009-10-07
3:24
2018-09-09
20:45
MySQL Server: OptimizerVerified
(5173 days)
S25.1.39, 5.1.44, 5.5.99Linux (Linux web2 2.6.18-92.1.18.el5.028stab060.8 #1 SMP Mon Feb 9 21:44:50 MSK 2009 x86_64)AnyMySQL 5.1.39 failed to use index
816302016-05-28
5:46
2016-08-31
6:30
MySQL Server: ReplicationVerified
(2767 days)
S55.7.12AnyAnyMySQL 5.7 is 37-45% slower then 5.6 when using binlogging due to defaults change
759812015-02-20
13:56
2017-11-05
7:12
MySQL Server: InnoDB storage engineVerified
(3277 days)
S55.7.6AnyAnyMySQL 5.7.5 30% slower than 5.6.23 for 1 thread write
1143312024-03-12
21:53
2024-03-19
9:48
MySQL Server: InnoDB storage engineVerified
(10 days)
S58.0.*, 8.0.36Linuxx86MySQL get high insert latency in low concurrency
950802019-04-23
7:24
2019-04-30
14:09
MySQL RouterVerified
(1795 days)
S58.0.15, 8.0.16Oracle Linux (Oracle Linux Server 7.5, Linux 4.1.12-124.18.6.el7uek.x86_64 )x86 (Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz)MySQL Router consuming mor CPU resources than it should
595572011-01-17
15:26
2018-09-09
20:45
MySQL Server: OptimizerVerified
(4820 days)
S25.1, 5.5AnyAnyMySQL uses order of fields in GROUP BY when ORDER BY NULL is specified
569652010-09-23
9:22
2015-08-10
14:34
MySQL Server: mysqldump Command-line ClientVerified
(4930 days)
S35.1.44Linux (2.6.18-164.6.1.el5 #1 SMP, CentOS 5.5)Anymysqldump poor performance with large number of tables
1000912020-07-02
12:23
2020-07-03
8:48
Connector / PythonVerified
(1365 days)
S58.0.18, 8.0.20AnyAnymysqlx interface is a lot slower than the connector.python interface
783552015-09-07
15:53
2015-09-15
8:51
MySQL Server: OptimizerVerified
(3118 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
679132012-12-16
2:31
2017-07-18
5:39
Connector / ODBCVerified
(4085 days)
S55.2.2, 5.1.11Windows (Windows 7 and 8 64-bit)AnyODBC connector performance problem
1004322020-08-05
7:55
2020-08-05
14:03
MySQL Server: Performance SchemaVerified
(1332 days)
S58.0.21AnyARMOptimal memory-barrier for performance-schema counter
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