Comments - Configuring MariaDB for Optimal Performance

3 years, 4 months ago Jamie M

Make sure you set the optimizer search depth in your my.cnf file if many of your queries have a large number of tables:

https://mariadb.com/resources/blog/setting-optimizer-search-depth-mysql

A 28 table query with some subqueries was taking about 20 seconds to complete with the default optimizer_search_depth value of 62.

After setting optimizer_search_depth = 0 (auto) the same query took 0.03 seconds.

 
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