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ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
---|---|---|---|---|---|---|---|---|---|
50367 | 2010-01-15 14:12 | 2011-02-16 23:44 | MySQL Server: General | Verified (5124 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) |
26832 | 2007-03-04 18:17 | 2011-04-05 14:46 | MySQL Server: Optimizer | Verified (4741 days) | S5 | 5.5 | Any | Any | ENUM types not optimized |
63905 | 2012-01-02 23:47 | 2012-01-16 18:35 | MySQL Server: Optimizer | Verified (4455 days) | S5 | 5.1.60 | Windows | Any | handler_read_next is suprisingly high and slows queries |
43726 | 2009-03-18 12:07 | 2013-03-03 20:45 | MySQL Server: MyISAM storage engine | Verified (5489 days) | S5 | 5.1.32/6.0 | Any | Any | THR_LOCK_myisam is locked while flushing unwritten key blocks to disk |
68919 | 2013-04-10 14:25 | 2013-04-10 14:33 | MySQL Server: Optimizer | Verified (4005 days) | S5 | 5.6.10 | Any | Any | Performance regression when DS-MRR is used for query with small limit |
69219 | 2013-05-13 20:14 | 2013-05-13 20:32 | MySQL Server: Optimizer | Verified (3972 days) | S5 | 5.6.12 | Any | Any | CREATE TEMPORARY TABLE ... SELECT is slower on 5.6 than on 5.1 |
68413 | 2013-02-18 2:45 | 2013-09-25 2:58 | MySQL Server: Performance Schema | Verified (3837 days) | S5 | 5.6.10, 5.6.13 | Any | Any | performance_schema overhead is at least 10% |
58234 | 2010-11-16 16:26 | 2014-02-26 12:47 | MySQL Server: InnoDB storage engine | Verified (4484 days) | S5 | 5.1.49-r1, 5.5.20 | Any | Any | LENGTH() / OCTET_LENGTH() on BLOB field very slow |
60023 | 2011-02-08 21:45 | 2014-05-22 12:13 | MySQL Server: Optimizer | Verified | S5 | 5.5.8 , 5.1.51 | Any | Any | No Loose Index Scan for GROUP BY / DISTINCT on InnoDB partitioned table |
74083 | 2014-09-25 18:11 | 2014-10-09 12:58 | MySQL Server: Optimizer | Verified (3458 days) | S5 | 5.6.20, 5.6.22 | Linux (CentOS 6.5) | Any | ENUM index scan is slower than INT index scan |
Showing 1-10 of 96 (Edit, Save, CSV, Feed) | Show Next 10 Entries » |