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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 21978 | 2006-09-01 22:13 | 2011-02-16 23:43 | MySQL Server: Options | Verified (5664 days) | S3 | 4.0.18, 5.0, 6.0.10, 5.5 | Windows (Windows 2000) | Any | 'flush_time' value set for 1800 sec. on Non Win9x/Me installs by default |
| 40367 | 2008-10-28 8:55 | 2011-02-16 23:43 | MySQL Server: Information schema | Verified (5250 days) | S3 | 5.1.28, 5.1.29, 5.0, 5.1 bzr | Any | Any | SHOW on a broad view is taking too long |
| 42705 | 2009-02-09 16:37 | 2011-02-16 23:43 | MySQL Server: General | Verified (5190 days) | S3 | 5.1.30 | Any | Any | Reduce malloc/free during query lifecycle. |
| 50367 | 2010-01-15 14:12 | 2011-02-16 23:44 | MySQL Server: General | Verified (4830 days) | S5 | 5.1.42, 5.1 bzr | Any (MS Windows 32 bits, Mac) | Any | REPLACE has quadradic computational complexity on windows server (but not linux) |
| 48359 | 2009-10-27 19:24 | 2012-05-18 20:19 | MySQL Cluster: Cluster (NDB) storage engine | In progress (4732 days) | S3 | mysql-5.1-telco-7.1 | Linux (RHEL 4) | Any | ALTER TABLE xx COMMENT - locks large tables |
| 66563 | 2012-08-28 5:37 | 2012-08-28 6:55 | MySQL Server: InnoDB Plugin storage engine | Verified (3936 days) | S5 | 5.1,5.6 | Any | Any | reduce the number of redundant calls to btr_cur_optimistic_insert() |
| 60349 | 2011-03-04 21:20 | 2013-01-15 15:25 | MySQL Server | Verified (3796 days) | S5 | 5.1.55 | Any | Any | trim beginning spaces processes data only byte wise (continue of bug14637 (3)) |
| 60348 | 2011-03-04 20:14 | 2013-01-15 15:25 | MySQL Server | Verified (3796 days) | S5 | 5.1.55 | Any | Any | trim trailing spaces processes data only byte wise (continue of bug14637 (2)) |
| 60345 | 2011-03-04 17:11 | 2013-01-15 15:25 | MySQL Server | Verified (3796 days) | S5 | 5.1.55 6.0.11 | Any | Any | trim trailing spaces processes data only byte wise (the continue of bug14637) |
| 60351 | 2011-03-04 22:15 | 2013-01-15 15:27 | MySQL Server | Verified (3796 days) | S5 | 5.1.55 | Any | Any | trim same character processes data only byte wise (continue of bug14637 (4)) |
| 69118 | 2013-05-02 2:28 | 2013-05-02 14:00 | MySQL Server: Command-line Clients | Verified (3689 days) | S5 | 5.6, 5.7 | Any | Any | Wasted work in method get_table_structure() |
| 64340 | 2012-02-15 14:07 | 2013-06-14 15:35 | MySQL Server: InnoDB Plugin storage engine | Verified (3646 days) | S5 | 5.1.52, 5.1.61 | Any | Any | race on no_flush event during buf_flush_free_margin |
| 68572 | 2013-03-05 10:57 | 2014-02-19 16:19 | MySQL Server: Federated storage engine | Verified (3746 days) | S3 | 5.5.25a, 5.5.31 | Any | Any | FEDERATED using SHOW TABLE STATUS causes performance problems for InnoDB tables |
| 75504 | 2015-01-14 12:52 | 2015-01-22 14:51 | MySQL Server: InnoDB storage engine | Verified (3059 days) | S5 | Any | Any | btr_search_guess_on_hash makes found block young twice? | |
| 75962 | 2015-02-19 3:14 | 2015-03-03 20:46 | MySQL Server: InnoDB storage engine | Verified (3019 days) | S3 | 5.6.24, 5.7.6 | Any | Any | Innodb calls fsync when freeing a LRU page to fulfill page request |
| 71140 | 2013-12-13 9:16 | 2015-07-31 8:59 | MySQL Server: Optimizer | Verified (2869 days) | S2 | 5.1, 5.5, 5.6.15, 5.7.7 | Any | Any | Optimizer does NOT use range checks in typical self-join for InnoDB tables |
| 56965 | 2010-09-23 9:22 | 2015-08-10 14:34 | MySQL Server: mysqldump Command-line Client | Verified (4635 days) | S3 | 5.1.44 | Linux (2.6.18-164.6.1.el5 #1 SMP, CentOS 5.5) | Any | mysqldump poor performance with large number of tables |
| 78355 | 2015-09-07 15:53 | 2015-09-15 8:51 | MySQL Server: Optimizer | Verified (2823 days) | S5 | 5.5.41, 5.5.46, 5.5.47 | Ubuntu (x64) | Any | nested select query not work on mysql 5.5 but it works well in mysql 5.6 |
| 30342 | 2007-08-09 18:52 | 2015-10-07 14:54 | MySQL Server: Optimizer | Verified (2801 days) | S5 | 5.0.37, 5.6.17 | Any | Any | Equality propagation can make optimization much slower |
| 81630 | 2016-05-28 5:46 | 2016-08-31 6:30 | MySQL Server: Replication | Verified (2472 days) | S5 | 5.7.12 | Any | Any | MySQL 5.7 is 37-45% slower then 5.6 when using binlogging due to defaults change |
| 60261 | 2011-02-26 0:59 | 2016-11-12 22:57 | MySQL Cluster: Cluster (NDB) storage engine | Verified (2399 days) | S5 | mysql-cluster-gpl-7.1.9a | Any | Any | Are transaction hints needed in these situation? |
| 60087 | 2011-02-10 13:14 | 2016-12-04 20:45 | MySQL Server: InnoDB storage engine | Verified (4501 days) | S3 | 5.5 | Any | Any | Patch: Minimize InnoDB I/O load by adding a prefetch stage |
| 59727 | 2011-01-25 21:36 | 2016-12-04 20:45 | MySQL Server: InnoDB storage engine | Verified | S5 | 5.1 plugin, 5.5, 5.6 | Any | Any | LRU search can be inefficient with compression |
| 67913 | 2012-12-16 2:31 | 2017-07-18 5:39 | Connector / ODBC | Verified (3790 days) | S5 | 5.2.2, 5.1.11 | Windows (Windows 7 and 8 64-bit) | Any | ODBC connector performance problem |
| 75981 | 2015-02-20 13:56 | 2017-11-05 7:12 | MySQL Server: InnoDB storage engine | Verified (2982 days) | S5 | 5.7.6 | Any | Any | MySQL 5.7.5 30% slower than 5.6.23 for 1 thread write |
| 62018 | 2011-07-28 15:15 | 2018-02-11 20:45 | MySQL Server: InnoDB storage engine | Verified (3795 days) | S5 | 5.6.3 | Any | Any | innodb adaptive hash index mutex contention |
| 89926 | 2018-03-06 10:20 | 2018-03-12 12:21 | MySQL Server: C API (client library) | Verified (1914 days) | S5 | 5.7 | Linux | x86 | Performance degradation in libmysqlclient 20 |
| 56924 | 2010-09-22 11:26 | 2018-06-24 20:45 | MySQL Workbench: SQL Editor | Verified (4206 days) | S2 | 5.2.28 | Linux (Ubuntu 10.04) | Any | Memory leak? Possibly not a bug. |
| 74408 | 2014-10-15 19:52 | 2018-07-04 15:16 | MySQL Server: InnoDB storage engine | Verified (1800 days) | S5 | 5.6, 5.7, 8.0 | Any | Any | srv_conc_enter_innodb() is not optimal |
| 81376 | 2016-05-11 6:48 | 2018-07-16 8:12 | MySQL Server: InnoDB storage engine | Verified (2583 days) | S5 | 5.7 | Any | Any | Single page flushing should be removed |
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