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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 26453 | 2007-02-16 17:05 | 2013-03-03 20:45 | MySQL Server: MyISAM storage engine | Verified (5931 days) | S5 | 5.0.36bk | Any (*) | Any | patch to speed up range-optimizer |
| 22487 | 2006-09-19 17:57 | 2020-05-03 20:45 | MySQL Server: DDL | Verified (6576 days) | S5 | 5.0.26 | Any | Any | mysql performs extremely slow when creating unique indexes on huge table |
| 60345 | 2011-03-04 17:11 | 2013-01-15 15:25 | MySQL Server | Verified (4442 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 (4442 days) | S5 | 5.1.55 | Any | Any | trim same character processes data only byte wise (continue of bug14637 (4)) |
| 65177 | 2012-05-02 9:43 | 2020-05-03 20:45 | MySQL Server: Optimizer | Verified (4695 days) | S5 | 5.1,5.5 | Any | Any | perromance issue of "order by rand()" |
| 64304 | 2012-02-12 17:04 | 2012-02-16 9:49 | MySQL Server: InnoDB storage engine | Verified (4780 days) | S5 | 5.5 | Any | Any | assemble to implement procedure of transforming between big-end and little-end |
| 66079 | 2012-07-30 2:59 | 2012-08-01 14:19 | MySQL Server: InnoDB storage engine | Verified (4611 days) | S5 | 5.5+ | Any | Any | unnecessary calling trx_sys_update_mysql_binlog_offset when sql_log_bin=0 |
| 64715 | 2012-03-21 4:24 | 2012-03-21 20:00 | MySQL Server: InnoDB Plugin storage engine | Verified (4742 days) | S5 | 5.1.52, 5.1.63 | Any | Any | buf_LRU_free_block() calls page_zip_calc_checksum() unnecessarily. |
| 85819 | 2017-04-06 3:04 | 2018-02-18 18:29 | MySQL Server: InnoDB Plugin storage engine | Verified (2899 days) | S5 | 5.7 | Linux | ARM | Optimize AARCH64 CRC32c implementation |
| 88399 | 2017-11-08 8:39 | 2018-02-18 18:29 | MySQL Server: InnoDB storage engine | Verified (2642 days) | S5 | 5.7,8.0 | Linux | ARM | Using CAS for trylock in place of TAS for EventMutex (arm64) |
| 71761 | 2014-02-18 15:03 | 2018-06-14 5:10 | MySQL Server: InnoDB storage engine | Verified (2599 days) | S5 | 5.6.16, 5.7, 8.0 | Any | Any | ANALYZE TABLE should remove its table from background stat processing queue |
| 97230 | 2019-10-15 10:44 | 2019-10-15 14:06 | MySQL Server: InnoDB storage engine | Verified (1978 days) | S5 | 8.0 | Any | ARM | rwlock: refine lock->waiters with C++11 atomics |
| 97228 | 2019-10-15 10:40 | 2019-10-25 12:07 | MySQL Server: InnoDB storage engine | Verified (1968 days) | S5 | 8.0 | Any | ARM | rwlock: refine lock->lock_word with C11 atomics |
| 97765 | 2019-11-25 8:09 | 2019-11-25 8:35 | MySQL Server: InnoDB storage engine | Verified (1937 days) | S5 | 8.0 | Any | ARM | innobase/os: refine os_total_large_mem_allocated with c++11 atomics |
| 97766 | 2019-11-25 8:20 | 2019-11-25 8:35 | MySQL Server: InnoDB storage engine | Verified (1937 days) | S5 | 8.0 | Any | ARM | innobase/os_once: optimize os_once with c++11 atomics |
| 97767 | 2019-11-25 8:27 | 2019-11-25 8:36 | MySQL Server: InnoDB storage engine | Verified (1937 days) | S5 | 8.0 | Any | ARM | innobase/dict: refine zip_pad_info->pad with c++11 atomics |
| 101278 | 2020-10-22 17:51 | 2020-10-23 10:26 | MySQL Server: Optimizer | Verified (1604 days) | S5 | 8.0 | Any | Any | Field_string::cmp suboptimal string comparison |
| 101024 | 2020-10-01 12:55 | 2020-10-09 15:57 | MySQL Server: Compiling | Verified (1618 days) | S5 | 8.0 | Any | Any | GCC malloc function attribute |
| 98070 | 2019-12-25 12:33 | 2020-01-06 8:51 | MySQL Server: Replication | Verified (1906 days) | S5 | 8.0.18 | Any | Any | Optimize write performance when group commit |
| 105245 | 2021-10-18 6:41 | 2021-10-18 7:43 | MySQL Server: InnoDB storage engine | Verified (1244 days) | S5 | 8.0.26 | Any | Any | no need to create recv_sys when mysqld initialize |
| 105246 | 2021-10-18 7:20 | 2021-10-18 7:44 | MySQL Server: InnoDB storage engine | Verified (1244 days) | S5 | 8.0.26 | Any | Any | it is better to execute dict_persist_init() after judge the err |
| 104630 | 2021-08-16 3:47 | 2021-08-17 14:26 | MySQL Server: InnoDB storage engine | Verified (1306 days) | S5 | 8.0 | Any | Any | no need to make two conditional judgments |
| 104779 | 2021-08-31 9:38 | 2021-08-31 10:02 | MySQL Server: InnoDB storage engine | Verified (1292 days) | S5 | 8.0.19 | Any | Any | no need to own sx-latch during the period of page flusing for BUF_FLUSH_LRU |
| 106233 | 2022-01-21 8:57 | 2022-01-21 9:47 | MySQL Server: InnoDB storage engine | Verified (1149 days) | S5 | 8.0.28 | Any | Any | it is better to create TrxUndoRsegs after the if judgment |
| 106249 | 2022-01-23 3:58 | 2022-01-23 9:54 | MySQL Server: InnoDB storage engine | Verified (1147 days) | S5 | 8.0 | Any | Any | it is better to use trx_undo_get_next_rec_from_next_page |
| 106604 | 2022-03-01 3:43 | 2022-03-01 8:01 | MySQL Server: InnoDB storage engine | Verified (1110 days) | S5 | 5.7.37 | Linux | Any | Contribution by Tencent Cloud-Native Database team: Purge suspend forever |
| 106720 | 2022-03-13 13:55 | 2022-03-14 5:37 | MySQL Server: InnoDB storage engine | Verified (1097 days) | S5 | 8.0.26 | Any | Any | it is better to make a conditional judgment before entering the while loop |
| 106756 | 2022-03-17 8:31 | 2022-03-17 9:17 | MySQL Server: InnoDB storage engine | Verified (1094 days) | S5 | 8.0.28 | Any | Any | it is better to change recv_sys->n_addrs to atomic |
| 106768 | 2022-03-18 7:40 | 2022-03-18 10:11 | MySQL Server: InnoDB storage engine | Verified (1093 days) | S5 | 8.0.19 | Any | Any | dummy index optimize: it is better to reuse the index object |
| 106064 | 2022-01-05 13:47 | 2022-01-05 13:49 | MySQL Server: InnoDB storage engine | Verified (1165 days) | S5 | 8.0.26 | Any | Any | maintain skip_ibuf in zip_page_handler |
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