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| ID# | Date | Type | Status | Sev | Version | Target | OS | Summary | Assigned |
|---|---|---|---|---|---|---|---|---|---|
| 45699 | 2009-06-24 11:05 | Connector/Net | Closed (1052 days) | S5 | 6.0 | Any | MySqlHelper.EscapeString() performance can be improved | ||
| 53198 | 2010-04-27 13:45 | Server: Docs | Closed (759 days) | S3 | Any | Duplicate sentence in the performance schema doc | Paul DuBois | ||
| 2683 | 2004-02-09 6:48 | Server | Closed (3027 days) | S3 | 4.1.1a | NT 4 Server SP 6a | Poor Performance on a Multi-Homed System | ||
| 42608 | 2009-02-04 21:42 | Server: General | Closed (1190 days) | S3 | Summit v0.2.0 | Summit v0.2.1 | Any | Summit may need changes to default config parameters for optimal performance | Mikael Ronstrom |
| 53696 | 2010-05-17 11:07 | Server: Performance Schema | Closed (512 days) | S3 | 5.6.99 | 5.5+ | Any | Performance schema engine violates the PSEA API by calling my_error() | Marc Alff |
| 46183 | 2009-07-14 20:04 | Server: Cluster | Closed (922 days) | S3 | mysql-5.1-telco-6.2.16, ...-6.3.16 | Sun Solaris | Cluster query performance regression on Solaris | Magnus Blaudd | |
| 33765 | 2008-01-09 12:36 | MySQL Workbench | Closed (1598 days) | S2 | 5.0.11 | Microsoft Windows | UI Performance issues | ||
| 37239 | 2008-06-06 7:26 | Connector/Net | Closed (1417 days) | S3 | 5.3.0.0 | Any | MySqlReader GetOrdinal performance changes break existing functionality | ||
| 55087 | 2010-07-08 15:38 | Server: Performance Schema | Closed (666 days) | S5 | Any | Performance schema: optimization of the instrumentation interface | Marc Alff | ||
| 54531 | 2010-06-15 21:39 | Server: Optimizer | Closed (709 days) | S2 | 5.1.46, 5.1.47 | Any | Performance regression with many joins | ||
| 24169 | 2006-11-10 7:41 | Server | Closed (1913 days) | S1 | 5.1.12, 5.1.14 | Linux (Linux (Debian/Sarge)) | Dramatic speed loss when going from 5.1.11 to 5.1.12 (or to 5.0.26) | Valeriy Kravchuk | |
| 44723 | 2009-05-07 15:34 | Server: MyISAM | Closed (980 days) | S5 | 5.0/5.1 | 5.0+ | Linux | Larger read_buffer_size values can cause performance decrease for INSERTs | Anurag Shekhar |
| 48302 | 2009-10-26 11:43 | Tools: Random Query Generator | Closed (942 days) | S2 | 2.1 | Any | Major performance regression in RQG when using --mask | Bernt Johnsen | |
| 64012 | 2012-01-12 14:34 | Connector/Net | Closed (78 days) | S5 | 6.4.4.0 | Microsoft Windows (7 64-bit) | CommandText property set method performance improvement | Fernando Gonzalez | |
| 30237 | 2007-08-03 22:10 | Server: Parser | Closed (1690 days) | S5 | 5.0 | 5.1.23 | Any | Performance regression in boolean expressions | Marc Alff |
| 52446 | 2010-03-29 16:00 | Connector/Net | Closed (738 days) | S5 | 6.2.2 | Microsoft Windows | MySqlSessionStateStore performance | Vladislav Vaintroub | |
| 36603 | 2008-05-08 19:22 | Server: Falcon | Closed (1233 days) | S3 | 6.0.5 | 6.0.6 | Any | Falcon; Performance drop when ageGroup hits 2^31 | Kevin Lewis |
| 52134 | 2010-03-17 11:08 | Server: Performance Schema | Closed (660 days) | S3 | mysql-next-mr, 5.6.99-m3 | 5.5+ | Any | performance schema file io, symlink in path | Marc Alff |
| 52807 | 2010-04-14 6:40 | Server: Docs | Closed (772 days) | S3 | 5.5.3+ | Any | FLAGS field in EVENTS_WAITS_CURRENT is not documented | Paul DuBois | |
| 53866 | 2010-05-20 18:23 | Server: Docs | Closed (735 days) | S3 | 5.1 | Any | Manual Bug: enabling binary log "makes performance about 1% slower." | Paul DuBois | |
| 34220 | 2008-02-01 10:42 | Connector/Net | Closed (1546 days) | S3 | 5.1.5 | Any | Bug in MySql.Data.MySqlClient.Statement TokenizeSql + Performance issue | ||
| 33534 | 2007-12-27 13:12 | Server: Cluster | Closed (1556 days) | S2 | MySQL Cluster CGE 6.3 | Any | Bad performance of INSERT's in auto_incremented tables | Martin Skold | |
| 47914 | 2009-10-08 9:10 | Server: Optimizer | Closed (60 days) | S2 | 4.1 and 5.1 | Microsoft Windows (Windows Server 2003) | Performance Issue with Subquery | ||
| 51447 | 2010-02-24 7:08 | Server: Performance Schema | Closed (800 days) | S2 | mysql-5.5.99 (Celosia) | 5.5+ | Any | performance schema evil twin files | Marc Alff |
| 59799 | 2011-01-28 18:00 | Server: Performance Schema | Closed (470 days) | S3 | 5.5.6 | Any | handler statistics for the performance schema engine | Marc Alff | |
| 48229 | 2009-10-22 13:22 | Server: Partition | Closed (707 days) | S5 | 5.1.37,5.1.38 | 5.1+ | Linux (CentOS 4.4) | group by performance issue of partitioned table | Mattias Jonsson |
| 3657 | 2004-05-05 10:04 | Server: Cluster | Closed (2920 days) | S3 | mysql-4.1 | FermiLinux LTS 3.01 (RH EL 3.0) | Perfomance degradation after db node failure | Magnus Blaudd | |
| 5969 | 2004-10-08 5:49 | Server | Closed (2784 days) | S1 | 5.0.2 | Linux (Linux) | Performance Problem with updatable VIEW | Oleksandr Byelkin | |
| 54782 | 2010-06-24 15:31 | Server: Performance Schema | Closed (660 days) | S3 | 5.5.3-m3, 5.5.4-m3 | 5.5+ | Any | Performance schema per thread accounting and thread cache | Marc Alff |
| 46101 | 2009-07-09 20:49 | MySQL Workbench | Closed (1001 days) | S2 | 5.1.16 OSS | Microsoft Windows (XP SP2) | MySQL Workbench OSS leaks GDI objects, resulting in massive performance drops | Mike Lischke | |
| 5436 | 2004-09-06 19:10 | Server: InnoDB | Closed (2576 days) | S3 | all | Any (all) | SHOW INNODB STATUS is unusable with a lot of concurrent connections | Marko Mäkelä | |
| 12245 | 2005-07-28 18:48 | Connector/Net | Closed (2480 days) | S2 | 1.0.4 | Microsoft Windows (Windows 2000) | using Prepare() on an insert command causes null parameters to convert to "0" | Reggie Burnett | |
| 27531 | 2007-03-29 18:00 | Server: Optimizer | Closed (1841 days) | S2 | 4.1.22 5.0 | Any | Query performance degredation in 4.1.22 and greater | Georgi Kodinov | |
| 55462 | 2010-07-21 23:22 | Server: Performance Schema | Closed (644 days) | S5 | 5.5.3-m3 | 5.5+ | Any | Performance schema: reduce the overhead of PFS_events_waits::m_wait_class | Marc Alff |
| 52534 | 2010-04-01 17:49 | Connector/J | Closed (764 days) | S1 | 5.1-bzr | Any | Significant performance regression using load-balanced connections | Todd Farmer | |
| 58225 | 2010-11-16 11:21 | Server: Optimizer | Closed (303 days) | S2 | 5.1.49, 5.1.54, 5.5.7 | Microsoft Windows (Server 2003) | Extreme performance degradation with joins | ||
| 40440 | 2008-10-30 17:34 | Connector/J | Closed (1099 days) | S5 | 5.1.7 | Any | Performance bottleneck using batched statements | ||
| 36942 | 2008-05-25 12:28 | Server: InnoDB | Closed (705 days) | S3 | 5.0,5.1 | 5.0+ | Any | Performance problem in lock_get_n_rec_locks (SHOW INNODB STATUS) | |
| 5570 | 2004-09-14 13:35 | MySQL Administrator | Closed (2786 days) | S3 | 1.0.12 | Linux (Linux) | Startup variables, Performance tab, cache size needs a memory size (k or m) | Alfredo Kojima | |
| 35850 | 2008-04-05 4:09 | Server: Optimizer | Closed (705 days) | S5 | 5.1.23 | 5.1+ | Any (Tested w/ SUSE) | Performance regression in 5.1.23/5.1.24 | |
| 50939 | 2010-02-05 9:10 | Server: Optimizer | Closed (589 days) | S5 | all | 5.1+ | Any | Loose Index Scan unduly relies on engine to remember range endpoints | Martin Hansson |
| 37536 | 2008-06-19 22:34 | Server | Closed (708 days) | S5 | 5.1.24 | 6.0-beta | Sun Solaris (Nevada Bld 87 on X86) | Thread scheduling causes performance degradation at low thread count | Davi Arnaut |
| 28167 | 2007-04-30 18:06 | Connector/Net | Closed (1849 days) | S5 | 5.0.6 | Any | Poor performance building connection string | ||
| 43400 | 2009-03-05 7:15 | Server | Closed (1161 days) | S3 | Summit v0.2.1 | Summit v0.2.2 | Any | MySQL Performance version options have bad default values | Mikael Ronstrom |
| 55609 | 2010-07-28 16:17 | Connector/Net | Closed (666 days) | S2 | 6.3.3 | Any | DataAdapter.Update() slowdown | Vladislav Vaintroub | |
| 21013 | 2006-07-12 19:08 | Server: SP | Closed (2110 days) | S3 | >= 5.0.18 | All OS | Performance Degrades when importing data that uses Trigger and Stored Procedure | Tomash Brechko | |
| 24035 | 2006-11-07 8:57 | Server: Optimizer | Closed (1914 days) | S5 | 5.0.34-BK, 5.0.26, 5.0.27 | Linux (Linux, FREEBSD) | performance of update query difference between 5.0.22-log AND 5.0.27-log | Igor Babaev | |
| 53852 | 2010-05-20 11:14 | Server: InnoDB Plugin | Closed (534 days) | S3 | 5.1.47/plugin1.0.8 | Any | InnoDB: Performance drop in SELECT_SUM_RANGES test at higher number of threads | Alexey Stroganov | |
| 36292 | 2008-04-23 14:16 | Server: InnoDB | Closed (1491 days) | S1 | 5.0.41-community-nt | Microsoft Windows (Windows XP SP2) | Can't create a new thread (errno 12); if you are not out of available memory | ||
| 40006 | 2008-10-13 15:04 | Server | Closed (1311 days) | S5 | 5.0.18 | Any | Performance depends on functions used? | ||
| 53617 | 2010-05-13 8:15 | Server: Performance Schema | Closed (660 days) | S3 | 5.5.3-m3, 5.5.4-m3 | Any | Missing performance schema tables not reported in the server log at startup | Marc Alff | |
| 36941 | 2008-05-25 11:58 | Server: InnoDB | Closed (705 days) | S3 | 5.0-bk, 5.1-bk | 5.0+ | Any | Performance problem in ha_print_info (SHOW INNODB STATUS) | |
| 30156 | 2007-07-31 20:56 | Monitoring: Advisors/Rules | Closed (1753 days) | S3 | 1.4 | Any | table cache not optimal advisor - incorrect information on details tab | Andy Bang | |
| 53737 | 2010-05-18 9:30 | Server: Optimizer | Closed (666 days) | S2 | mysql-next-mr | Any | Performance regressions after applying patch for bug 36569 | Gleb Shchepa | |
| 50843 | 2010-02-02 18:12 | Server: Optimizer | Closed (705 days) | S2 | 5.1.42 | 5.1+ | Any | Optimizer ignores clustered index for GROUP BY even when it improves performance | Evgeny Potemkin |
| 54563 | 2010-06-16 19:19 | Server: InnoDB | Closed (708 days) | S3 | 5.5.5pre | Any | InnoDB: Performance drop in varios sysbench tests | Sunny Bains | |
| 52102 | 2010-03-16 16:20 | Server: InnoDB Plugin | Closed (527 days) | S5 | 5.0, 5.1, 5.5.5m3 | 5.1+ | Microsoft Windows (Any) | InnoDB Plugin shows performance drop compared to InnoDB (Windows) | Calvin Sun |
| 44059 | 2009-04-03 2:26 | Server: Partition | Closed (888 days) | S5 | 5.1.32, 5.1.35-bzr | 5.1+ | Linux (CentOS 5 kernel 2.6.18-53.el5 SMP x86_64) | Incorrect cardinality of indexes on a partitioned table | Mattias Jonsson |
| 56475 | 2010-09-01 23:17 | Server: Performance Schema | Closed (308 days) | S3 | 5.6 | Any | Missing thread states in performance_schema.THREADS / SHOW PROFILE | Marc Alff | |
| 60366 | 2011-03-07 10:43 | Connector/Net | Closed (387 days) | S2 | 6.3.5, 6.3.6 | Microsoft Windows | Calling stored procedure with output parameters may hugely decrease performance | ||
| 52754 | 2010-04-12 7:26 | Server: Compiling | Closed (774 days) | S1 | mysql-trunk (5.5.3), mysql-next-mr | Any | Build break in mysql-trunk, performance schema unit test | Marc Alff | |
| 57981 | 2010-11-04 14:57 | Server: InnoDB | Closed (102 days) | S3 | 5.5.7-m3 | Sun Solaris | UNIV_DEBUG causes big performance degradation for some operations on Solaris | Sunny Bains | |
| 59163 | 2010-12-24 17:20 | Server: InnoDB | Closed (141 days) | S2 | 5.5.8 | Any | Single user session performance in InnoDB | Inaam Rana | |
| 55416 | 2010-07-20 21:17 | Server: Performance Schema | Closed (623 days) | S1 | 5.5+ | Any | Renaming of performance_schema tables in 5.5 | Marc Alff | |
| 58986 | 2010-12-16 20:23 | Server: Compiling | Closed (505 days) | S3 | 5.6 | 5.6+ | Any | trunk does not build without performance schema | Alfranio Correia |
| 54467 | 2010-06-13 12:47 | Server: Performance Schema | Closed (401 days) | S2 | 5.6.99 | 5.6+ | Any (Linux and Mac OSX) | performance schema complains of wrong structure in bootstrap mode | Marc Alff |
| 22943 | 2006-10-03 15:10 | Server | Closed (1920 days) | S2 | all | Microsoft Windows (Windows) | syscall pruning in libmysql | Magnus Blaudd | |
| 54306 | 2010-06-07 19:26 | Server: Docs | Closed (266 days) | S3 | 5.1, 5.4, 5.5 | Any | Docs issue - Advice on innodb_flush_method can be misinterpreted | John Russell | |
| 49264 | 2009-12-01 14:28 | Server: Backup | Closed (814 days) | S2 | 6.0.14-backup(2894) | Any | BACKUP: Huge slowdown while backup triggers | Thava Alagu | |
| 40634 | 2008-11-11 11:30 | Server: MyISAM | Closed (1159 days) | S5 | 5.1.29, 6.0.x | 5.1+ | Any | table scan temporary table is 4x slower due to mmap instead instead of caching | Alexey Botchkov |
| 53874 | 2010-05-21 6:56 | Server: Performance Schema | Closed (625 days) | S3 | 5.5.3-m3, 5.5.4-m3 | 5.5+ | Any | SETUP_INSTRUMENTS.TIMED='NO' should not change TIMER_WAIT in aggregations | Christopher Powers |
| 30124 | 2007-07-30 11:15 | Server: Falcon | Closed (1729 days) | S2 | Any | Falcon: UPDATE has unacceptable performance | Kevin Lewis | ||
| 30625 | 2007-08-24 15:28 | Server: Parser | Closed (1690 days) | S5 | 5.0, 5.1 | Any | Performance, reduce depth for expressions | Marc Alff | |
| 52475 | 2010-03-30 12:56 | Connector/Net | Closed (764 days) | S3 | 6.2.x | Any | Performance issue in Connector/NET procedure cache | Bogdan Degtyariov | |
| 34384 | 2008-02-07 16:45 | Server: DML | Closed (596 days) | S3 | 5.0.45, 5.1.22, 5.0.54 | Any | Big quoted int in WHERE of UPDATE or DELETE causes drop in performance | Evgeny Potemkin | |
| 46554 | 2009-08-04 19:50 | Server: RBR | Closed (543 days) | S3 | 6.0-codebase, mysql-next-mr-wl5092 | Any | RBR: pending rows event can be flushed too soon sometimes. | Luís Soares | |
| 48631 | 2009-11-09 9:26 | Server: Performance Schema | Closed (862 days) | S3 | mysql-trunk-perfschema | Any | Performance schema: unit test failures | Marc Alff | |
| 56585 | 2010-09-06 9:38 | Server: Windows | Closed (541 days) | S5 | 5.5.5 | 5.5+ | Microsoft Windows | Slowdown of readonly sysbench benchmarks (e.g point_select) on Windows 5.5 | Vladislav Vaintroub |
| 52809 | 2010-04-14 7:07 | Server: Installing | Closed (624 days) | S2 | 5.5.3 | 5.5+ | Microsoft Windows (XP-SP3 (any)) | No performance_schema on WIndows | Daniel Fischer |
| 28491 | 2007-05-17 6:53 | Server: Cluster | Closed (1829 days) | S3 | 5.1 | Any | Expand check gets disabled in some cases (initial node restart) | Jonas Oreland | |
| 3904 | 2004-05-27 2:07 | Server | Closed (2907 days) | S2 | 4.1.2 | Linux (Linux) | COUNT DISTINCT performance anomaly in 4.1 | Konstantin Osipov | |
| 56933 | 2010-09-22 13:26 | Server: InnoDB | Closed (533 days) | S2 | 5.5 | Any | InnoDB does more writes in 5.5 than in 5.1 on buffer pool challenged workloads | Inaam Rana | |
| 63368 | 2011-11-21 19:09 | Server: Docs | Closed (169 days) | S3 | Any | case sensitivity in P_S | |||
| 25130 | 2006-12-18 5:46 | Server: Optimizer | Closed (60 days) | S5 | 5.0.34-BK, 5.0.27, 5.1, 5.5.0 | Microsoft Windows (Windows, Sparc & Linux) | Extremely Slow "Where in (Select... )" Subqueries GROUP BY / HAVING related | ||
| 52502 | 2010-03-31 12:56 | Server: Performance Schema | Closed (660 days) | S1 | mysql-trunk (5.5.3) | 5.5+ | Any | Performance schema does not start with large mutex_instance buffers | Marc Alff |
| 61556 | 2011-06-17 21:58 | Server: Docs | Closed (310 days) | S3 | 5.1,5.5 | Any | RBR should use TL_WRITE_CONCURRENT_INSERT | Jon Stephens | |
| 24386 | 2006-11-17 10:53 | Server: InnoDB | Closed (706 days) | S2 | 5.0, 5.1 | Any (all) | Performance degradation caused by instrumentation in mutex_struct | Marko Mäkelä | |
| 47137 | 2009-09-04 13:14 | Server: Packaging | Closed (889 days) | S5 | any | 5.0+ | Sun Solaris (using Sun compilers) | Solaris binary packages should be compiled with '-g0', not '-g' | Joerg Bruehe |
| 26204 | 2007-02-09 0:04 | Monitoring: Advisor/Rules | Closed (1926 days) | S3 | 1.1.0.4660 - 1.1.0.4739 | Any (All) | Typo in advisor description | Andy Bang | |
| 43942 | 2009-03-29 20:53 | Server: Falcon | Closed (1106 days) | S3 | 6.0.10 | 6.0.11 | Any | Make SyncObject::backoff really backoff | Kelly Long |
| 55716 | 2010-08-03 15:02 | Server: InnoDB | Closed (588 days) | S5 | Any | CHECK TABLES should not perform check on entire adaptive hash index | Inaam Rana | ||
| 4910 | 2004-08-05 14:04 | MySQL Administrator | Closed (2845 days) | S1 | 1.0.9 | Microsoft Windows (WinXP SP1) | Administrator crash with variable descriptions | Ulrich Bayer | |
| 36694 | 2008-05-13 16:20 | Connector/Net | Closed (560 days) | S3 | Microsoft Windows | bad information_schema performance in .NET app running stored routines | Bogdan Degtyariov | ||
| 21461 | 2006-08-06 1:28 | Server: Archive | Closed (1778 days) | S5 | 5.0 | Any (all) | Long Varchars created unneeded waste in compression in Archive | Brian Aker | |
| 1170 | 2003-08-31 20:30 | MySQL.com | Closed (3188 days) | S3 | n/a | n/a | Spelling error in Payson systems press release. | Jim Winstead | |
| 35843 | 2008-04-04 19:56 | Server: RBR | Closed (1316 days) | S3 | 5.1.23 | 5.1.29+ | Any | Slow replication slave when using partitioned myisam table | Zhenxing He |
| 2729 | 2004-02-12 0:45 | MySQL Administrator | Closed (2997 days) | S2 | 1.0.1a Alpha | Microsoft Windows (Win2k) | Wrong value for query_cache_type when editing with MySQL Administrator | Michael G. Zinner | |
| 24509 | 2006-11-22 15:09 | Server: General | Closed (710 days) | S3 | 5.0,5.1 | 6.0-rc | Microsoft Windows (Windows) | 2048 file descriptor limit on windows needs increasing | Vladislav Vaintroub |
| 34001 | 2008-01-23 1:56 | Connector/Net | Closed (1285 days) | S5 | 5.1.4 | Any | Connection pooling has too much unnecessary contention | ||
| 32198 | 2007-11-08 21:03 | Server: Types | Closed (1619 days) | S2 | 5.0.50, 5.0.52-BK | Linux | Comparison of DATE with DATETIME still not using indexes correctly | Sergey Petrunya |
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