Hi devs, I'm looking at the new indexes created automatically by XWiki now, and they are different than the ones created using the CheckIndexes tool in Admin Tools. First this can make people create doubled indexes which can slow down (a little) writing but what I'm more concerned about is wether the new indexes are good enough. Looking at activitystream_events we have this mysql> show indexes from activitystream_events; +-----------------------+------------+-----------------+--------------+-----------------+-----------+-------------+----------+--------+------+------------+---------+ | Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | +-----------------------+------------+-----------------+--------------+-----------------+-----------+-------------+----------+--------+------+------------+---------+ New one | activitystream_events | 0 | PRIMARY | 1 | ase_eventid | A | 2753 | NULL | NULL | | BTREE | | | activitystream_events | 1 | EVENT_TYPE | 1 | ase_type | A | 6 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | EVENT_PRIORITY | 1 | ase_priority | A | 2 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | EVENT_WIKI | 1 | ase_wiki | A | 8 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | EVENT_DATE | 1 | ase_date | A | 2753 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | EVENT_PAGE | 1 | ase_page | A | 1376 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | EVENT_USER | 1 | ase_user | A | 8 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | EVENT_SPACE | 1 | ase_space | A | 29 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | EVENT_STREAM | 1 | ase_stream | A | 33 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | EVENT_APP | 1 | ase_application | A | 2 | NULL | NULL | YES | BTREE | | Old ones | activitystream_events | 1 | ase_requestid | 1 | ase_requestid | A | 1376 | 200 | NULL | YES | BTREE | | | activitystream_events | 1 | ase_stream | 1 | ase_stream | A | 35 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | ase_priority | 1 | ase_priority | A | 2 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | ase_type | 1 | ase_type | A | 6 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | ase_application | 1 | ase_application | A | 2 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | ase_user | 1 | ase_user | A | 8 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | ase_wiki | 1 | ase_wiki | A | 8 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | ase_space | 1 | ase_space | A | 29 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | ase_page | 1 | ase_page | A | 917 | NULL | NULL | YES | BTREE | | | activitystream_events | 1 | ase_param1 | 1 | ase_param1 | A | 1376 | 200 | NULL | YES | BTREE | | | activitystream_events | 1 | ase_param2 | 1 | ase_param2 | A | 44 | 200 | NULL | YES | BTREE | | | activitystream_events | 1 | ase_param3 | 1 | ase_param3 | A | 2 | 200 | NULL | YES | BTREE | | | activitystream_events | 1 | ase_param4 | 1 | ase_param4 | A | 2 | 200 | NULL | YES | BTREE | | | activitystream_events | 1 | ase_param5 | 1 | ase_param5 | A | 2 | 200 | NULL | YES | BTREE | | +-----------------------+------------+-----------------+--------------+-----------------+-----------+-------------+----------+--------+------+------------+---------+ 24 rows in set (0.01 sec) The xwikiattrecyclebin has no new indexes, and I have had a case of performance issue with the recyclebin because of indexes. Who have worked on this and how has it been reviewed wether or not this was enough ? Ludovic -- Ludovic Dubost Founder and CEO Blog: http://blog.ludovic.org/ XWiki: http://www.xwiki.com Skype: ldubost GTalk: ldubost